[939]*939BRIGHT, Circuit Judge.
Homer Gene Edwards was convicted on May 18, 1973, for heroin distribution and sentenced to ten years’ imprisonment. The district judge, in sentencing Edwards, employed 18 U.S.C. § 4208(a)(2) (1970),1 which specifies that “the prisoner may become eligible for parole at such time as the board of parole may determine.” On April 15, 1977, Edwards filed the present .action under 28 U.S.C. § 2255 (1970). He noted that he was still in custody, even though he had completed more than one-third of his sentence, and that the Parole Board2 had failed to give his application for parole meaningful consideration. Relying on our holding in Kortness v. United States, 514 F.2d 167 (8th Cir. 1975), Edwards claimed that the district judge had made a “critical error” in fixing his sentence and accordingly had the authority to modify the sentence under section 2255. The sentencing judge denied the petition without a hearing, and Edwards brought this appeal. We review his appeal against a backdrop of Parole Board procedures that have undergone substantial changes between the imposition of Edwards’ sentence in 1973 and his lack of success in obtaining parole during the next three years. For reasons stated below, we vacate the judgment of the district court and remand the case for further consideration in light of our discussion.
I.
The indictment charged Edwards with two counts of knowingly and intentionally distributing heroin in violation of 21 U.S.C. § 841(a)(1) (1970). During the trial the district judge granted Edwards’ motion for acquittal on count I, but the jury returned a guilty verdict on count II. The judge imposed a sentence of ten years’ imprisonment under 18 U.S.C. § 4208(a)(2) (1970) on August 9, 1973, a sentence that provided for parole at such time as the Parole Board may determine. The sentence carried with it a statutorily-imposed special parole term of three years.3 The conviction was upheld on appeal, and the Supreme Court denied certiorari.
Edwards received an initial, perfunctory hearing regarding eligibility for parole on November 13, 1973. At that hearing the Parole Board employed its new objective guidelines used in setting parole release dates.4 The Board determined to maintain Edwards in custody, scheduled the next hearing for November 1976, and stated:
The offense is in the very high category, the salient factor score is only 7, necessitating the service of between 36-45 months. * * * It is felt that he should get the maximum continuance of 3 years, giving him 41 months in all at the time of the next hearing, or in the mid-area of the guidelines * * *. Your release at this time would depreciate the seriousness of the offense committed and is thus incompatible with the welfare of society. [Pet. Br. at 2 (emphasis in original).]
Edwards’ petition alleges that the Board amended its prior order on March 4, 1975, and rescheduled the next parole hearing for September 1976. The hearing apparently was held in August 1976, however. At that [940]*940time the Board denied parole and set the next parole hearing for August 1978, stating:
Your offense behavior has been rated as very high severity. You have a salient factor score of 7. You have been in custody a total of 39 months. Guidelines established by the Commission for adult cases which consider the above factors indicate a range of 36-45 months to be served before release for cases with good institutional program performance and adjustment. After review of all relevant factors and information presented, a decision above the guidelines at this consideration appears warranted because of your extensive prior record which demonstrates that there is not a reasonable probability that you would live and remain at liberty without violating the law. 18 U.S.C. 4208 prohibits a continuance in your case of more than 24 months without review. Your next review has been scheduled in accordance with this statute. [Pet. Br. at 2.]
The net result, as observed by the appellant in his pro se brief, is that:
[W]hen appellant receives his Statutory Review Hearing in August, 1978, he will have been in custody some 63-64 months, which, less statutory good time, and the maximum good time earned, will actually leave appellant only several months short of serving two-third point of his ten (10) year sentence, that was imposed under provisions of Section 4208(a)(2) prior to the publication of parole guidelines that was published for the first time on November 19, 1973. [Pet. Br. at 6 (emphasis in original).]
Frustrated in his attempts to obtain parole, Edwards brought the present action under 28 U.S.C. § 2255 (1970),5 seeking a modification of his sentence. The judge who had sentenced him in 1973 denied his petition without a hearing,6 and wrote:
Accepting the facts as recited by the Petitioner in the body of his motion, I find that Mr. Edwards was accorded a preliminary hearing concerning his eligibility for parole within a short time after his arrival at his place of confinement; that his case was continued until November, 1976; that in March of 1975, the Board of Parole amended its prior order and moved up the Institution Review hearing to August or September of 1976; and that such hearing was actually held in August, 1976, following which the Board of Parole denied parole in this case and continued the matter for statutory review in August, 1978. Specific, articulated reasons were stated by the Board of Parole in denying parole in this case. The decision was affirmed by the Regional and National Boards.
As is patently clear from the facts above recited, the Petitioner was accorded a hearing on his application for parole at or before the one-third point of his sentence. Having been afforded that hearing, and the Board having stated cogent reasons for denying parole in his case, the Petitioner is now hard put to claim that he was not granted “meaningful consideration” for parole.
Accordingly, I hold that, since the Petitioner in this case has been timely accorded “meaningful consideration” of his application for parole, my expectations concerning the § 4208(a)(2) sentence imposed have not been thwarted.
Edwards then brought this pro se appeal, contending that our prior decision in Kort[941]*941ness v. United States, 514 F.2d 167 (8th Cir. 1975), entitled him to relief.
II.
The decision as to when an offender should be released from prison is shared by all three branches of the federal government: (1) the legislative branch prescribes the range of sentencing possibilities; (2) the judicial branch determines whether to incarcerate and then sentences within the range of possibilities provided by Congress; and (3) the executive branch, through the Parole Board, determines how much of the sentence must actually be served in prison.
In exercising their authority, the federal trial courts may rely on three different statutory provisions, each with different implications for parole. The first is 18 U.S.C. § 4205(a) (1976). Under this provision the judge fixes a definite sentence and the prisoner is eligible for release on parole, if his term is one year or greater, “after serving one-third of such term or terms or after serving ten years of a life sentence or of a sentence of over thirty years * * The second possibility is 18 U.S.C. § 4205(b)(1) (1976). Under this second provision, the sentencing judge prescribes a minimum term of greater than one year, “at the expiration of which the prisoner shall become eligible for parole, which term may be less than but shall not be more than one-third of the maximum sentence imposed by the court * * *.” Finally, as in this case, the judge may simply fix the maximum term of imprisonment and provide for parole release at such time “as the Commission may determine.” 18 U.S.C. § 4205(b)(2) (1975). In sum, the sentencing judge has
three options of (1) a straight sentence, with parole eligibility after service of one-third of the sentence [§ 4205(a)]; (2) an indeterminate sentence with minimum and maximum confinement periods specified [§ 4205(b)(1)]; and-(3) an indeterminate sentence with no minimum and only a maximum specified [§ 4205(b)(2)]. [Garafola v. Benson, 505 F.2d 1212, 1216-17 (7th Cir. 1974) (citations altered to account for congressional revisions).]
The third provision, 18 U.S.C. § 4205(b)(2), enables the sentencing judge to grant the Parole Board discretion to release the prisoner on parole before one-third of the sentence has been served if the Parole Board deems early release appropriate. See Garafola v. Benson, supra, 505 F.2d at 1216. The provision also serves to eliminate some of the disparities arising in sentencing because it vests almost complete discretion in a central body, the Parole Board. See Brief for Amicus Curiae United States Board of Parole at 15, Kortness v. United States, 514 F.2d 167 (8th Cir. 1975).
A judge sentencing under section 4205(b)(2) does not sentence in a vacuum. Typically, he has reviewed carefully a large quantity of information about the offender and his offense contained in the presentence report and supporting documents. Based on this information the judge has made a determination that the offender, assuming proper behavior while in prison, would benefit from early release. For this reason, he has sentenced under section 4205(b)(2), because it allows the Parole Board to release the offender even before the offender has served one-third of his sentence.
Thus, although section 4205(b)(2) purports to give the Parole Board unfettered discretion in releasing a prisoner on parole, it actually embodies a reasonably concrete standard. The district judge, in sentencing under section 4205(b)(2), has an objective expectation: (1) that the prisoner will be given meaningful parole consideration at or before the one-third point of his sentence, and (2) that the prisoner’s institutional conduct and rehabilitation will be major factors in the Parole Board’s determination.7 [942]*942See, e. g., United States v. Slutsky, 514 F.2d 1222 (2d Cir. 1975); Kortness v. United States, 514 F.2d 167 (8th Cir. 1975); Garaf-alo v. Benson, 505 F.2d 1212 (7th Cir. 1974); Grasso v. Norton, 371 F.Supp. 171 (D.Conn. 1974) .
This court has stated that sentencing judges do not have the authority “to supervise, control, or second-guess the Parole Board.” United States v. White, 540 F.2d 409, 411 (8th Cir. 1976); see Brest v. Ciccone, 371 F.2d 981 (8th Cir. 1967). On the other hand, however, the Parole Board must exercise its discretion in a manner consistent with the federal Constitution, applicable statutes, its own published rules, and the mandate given it by the sentencing judge at the time of sentencing. Part of the sentencing judge’s mandate is fulfillment of his objective expectations regarding meaningful consideration of parole applications of prisoners sentenced under section 4205(b)(2).
III.
We first discussed the problem of a sentencing judge’s objective expectations being frustrated by the Parole Board in Kortness v. United States, 514 F.2d 167 (8th Cir. 1975) . In that case we held that the sentencing judge had continuing authority under 28 U.S.C. § 2255 (1970) to modify the sentence in situations where his objective expectations regarding meaningful parole consideration had not been met. In this portion of the opinion, we first explore the changes in the Parole Board guidelines that
led to the Kortness decision, and we then examine the decision itself and its implications for this case.
A.
The Parole Board possesses the authority to issue rules and guidelines applicable to parole determinations. See 18 U.S.C. § 4203 (1976).8 In 1973, the Board adopted a table of guidelines for use in deciding the length of time a prisoner should serve before being released on parole. See 38 Fed.Reg. 31942 et seq. (1973) (current version at 42 Fed.Reg. 39808 et seq. (1977), to be codified in 28 C.F.R. § 2.20). The new system purports to replace subjective Parole Board determinations with an objective system.
This objective system or set of guidelines consists of a linear grid. The salient factor score, a point system for rating the offender’s rehabilitative potential based on certain personal attributes, makes up the x coordinate.9 The y coordinate of the grid focuses on the offense rather than the offender. Six classes of offenses are defined: low, low moderate, moderate, high, very high, and greatest. Thus, to find an offense characteristic one simply finds the offense on the chart where it is classified. The two coordinates are then put together linearly, and the “normal” range of time served before release can be ascertained according to the guideline chart.10
The goals of the guideline system are (1) to reduce the disparity in sentences meted out to similar offenders committing identical offenses, and (2) to contribute more predictability and fairness to Parole Board [943]*943determinations.11 It is clear that the guidelines do carry great, if not overwhelming, weight in Parole Board determinations. As the court in United States v. Slutsky, 514 F.2d 1222, 1228 (2d Cir. 1975), pointed out:
[942]*942§ 4203. Powers and duties of the Commission
(a) The Commission shall meet at least quarterly, and by majority vote shall—
(1) promulgate rules and regulations establishing guidelines for the powers enumerated in subsection (b) of this section and such other rules and regulations as are necessary to carry out a national parole policy and the purposes of this chapter * * * .
[943]*943From all indications, the guidelines are relied upon heavily in making parole determinations. For example, the Board’s regulations, while reciting that the prescribed time ranges are “merely guidelines”, nevertheless seem to reserve parole below the guidelines to the exceptional case. The district court in Grasso II, supra, made a specific finding that the guidelines are applied in between 92% and 94% of all cases. [Footnote and citations omitted.]
Although predictability is one of the oft-asserted advantages of the guidelines, in practice the outcome has not been nearly so certain. In certain instances discussed below, the guidelines’ predictability is illusory. Thus, even if the sentencing judge refers to a copy of the guidelines, he cannot know the outcome before the Parole Board. For example, the sentencing judge (or his probation officer) ordinarily looks solely at the conviction in determining offense severity. The Parole Board is not so bound. In setting the appropriate offense severity and the salient factor score the Board makes a case-by-case determination. The Board can override the guidelines because of information it possesses indicating unusual circumstances.12 This information consists of the items commonly found in presentence reports. Thus, the Board may consider charges dismissed as part of a plea bargain, [944]*944charges unproved at trial, other unadjudi-cated offenses, and hearsay allegations. The use of this kind of information has, at least thus far, withstood legal challenge.13
Therefore, the Board’s use of variables other than those indicated by the guidelines may produce an actual prison sentence far different from that contemplated by the judge imposing a sentence containing any aspect of indeterminancy. For example, a prisoner with a good parole prognosis (salient factor score of 8-6 under the current guidelines, see note 10 supra) convicted of possession with intent to distribute soft drugs valued at less than $5,000 (high offense severity, see id.) and acquitted of possession of hard drugs with intent to distribute (very high offense severity, id.) may be required to serve not sixteen-twenty months as specified in the guidelines, but double that time. The Board accomplishes this result by treating the offender as though he were convicted of the greater offense where, in the Board’s view, the circumstances justify assessing offense severity on the basis of crimes as charged, disregarding the acquittal.
B.
The petitioner in Kortness v. United States, 514 F.2d 167 (8th Cir. 1975), was sentenced under 18 U.S.C. § 4208(a)(2)14 prior to the promulgation and publication of the Parole Board’s guidelines. Afterwards the Board gave Kortness an initial perfunctory hearing and, on the basis of the new guidelines, determined that no further hearing would be necessary because the guidelines indicated that Kortness serve thirty months before parole. Kortness then brought a section 2255 petition seeking modification of his sentence, contending that the sentencing judge’s (and his) expectations had been thwarted by the Parole Board.
We agreed. In sentencing under section 4208(a)(2), the trial judge possessed an objective expectation of meaningful parole consideration at the one-third point of the prisoner’s sentence. This expectation was inconsistent with the Board’s determination that the prisoner must serve thirty months before serious parole consideration. Accordingly, we held that the sentencing judge had continuing authority under section 2255 to modify the sentence.
In subsequent cases we clarified the meaning of Kortness. It is not to be extended beyond the “intended, and extremely limited, jurisdictional boundaries” of the [945]*945decision. Kills Crow v. United States, 555 F.2d 183, 184 (8th Cir. 1977). In particular, Kortness relief was limited to situations where: (1) the sentence was imposed prior to or contemporaneous with adoption of the new Parole Board guidelines; (2) the Parole Board failed to give meaningful consideration to the prisoner’s application for parole within the first third of his sentence. Banks v. United States, 553 F.2d 37 (8th Cir. 1977); United States v. White, 540 F.2d 409 (8th Cir. 1976). In those cases we ruled that the import of the judge’s sentence was changed by the Parole Board’s action. Therefore, the judge had a right to modify the sentence retroactively. See United States v. White, supra, 540 F.2d at 411. See also United States v. Somers, 552 F.2d 108 (3d Cir. 1977); United States v. Salerno, 538 F.2d 1005 (3d Cir. 1976); United States v. Slutsky, 514 F.2d 1222 (2d Cir. 1975); Garafola v. Benson, 505 F.2d 1212 (7th Cir. 1974).
In sum, Kortness relief is available where: (1) the sentencing judge sentenced under section 4208(a)(2) and therefore set no minimum sentence that must be served before parole eligibility; (2) the sentence was imposed prior to or contemporaneous with the adoption of the Parole Board guidelines; (3) the prisoner has served at least a third of his sentence; (4) no meaningful parole consideration has been given to him. Under these circumstances, a critical error occurs in the sentencing process entitling the sentencing judge to modify the sentence.
IV.
Of the four requirements for Kortness relief, only one is in dispute in this case: whether or not meaningful consideration has been given to Edwards’ application for parole. The sentencing judge, who also ruled on the petitioner’s section 2255 motion, decided that his “expectations” regarding “meaningful consideration” had been met.
However, his characterization of the Parole Board’s action as meaningful consideration meeting his sentencing expectations needs to be analyzed in a different framework than subjective retrospection. As we indicated in part II of this opinion, judges sentencing under section 4208(a)(2) have reasonably objective expectations at the time of sentencing. These expectations are that a section 4208(aX2) prisoner will be given meaningful parole consideration at or before the one-third point in his sentence and that the prisoner’s conduct while institutionalized will be a substantial although not necessarily controlling factor in the Board’s determination.15
It is difficult for us to see how these expectations could have been met in this [946]*946ease. Edwards has already served well over a third of his sentence. Although the Parole Board furnished him with an institutional hearing at the one-third point of his sentence, at that hearing the Board actually increased his sentence over the guidelines. We have already noted that the Board has assumed the power to take such action. In exercising this power in this case, the Board appears not to have given Edwards’ application for parole meaningful consideration. In fact, the Board effectively extended Edwards’ incarceration beyond the limit that the trial judge undoubtedly contemplated at the time of sentencing. Although the Board’s decision did not result in Edwards’ imprisonment beyond the technical limit of his sentence, de facto the Board’s decision undercut the sentencing judge’s original determination that Edwards deserved serious parole consideration and probable release within the first third of his sentence. Although we cannot fault the Board for not actually releasing Edwards, United States v. White, 540 F.2d 409, 411 (8th Cir. 1976), we do conclude that the Board erred by failing to give his application for parole meaningful consideration. Kortness v. United States, 514 F.2d 167 (8th Cir. 1975).
The above conclusion is evidenced by the Board’s statement of reasons for denying parole. When the Board denied parole it stated simply:
After review of all relevant factors and information presented, a decision above the guidelines at this consideration appears warranted because of your extensive prior record which demonstrates that there is not a reasonable probability that you would live and remain at liberty without violating the law. [Pet. Br. at 2.]
This statement as a “meaningful consideration” of parole is somewhat mind-boggling. Edwards’ “extensive prior record” presumably was thoroughly considered by the sentencing judge. Nevertheless, the judge chose to sentence him under section 4208(a)(2), which provides for parole as soon as the Parole Board judges that adequate rehabilitation has occurred. In this case Edwards’ institutional conduct was apparently not even considered by the Parole Board because no mention was made of it in its parole denial.16 Thus, on this record, we must hold that the August 1976 hearing did not constitute a meaningful hearing within the contemplation of a judge sentencing under section 4208(a)(2) and that petitioner is entitled to some relief under section 2255.
It is true that approval by sentencing judges of their originally-imposed sentences in section 2255 proceedings has been held to be a proper ground for denial of such motions. Gravink v. United States, 549 F.2d 1152, 1153 (8th Cir. 1977); United States v. Clinkenbeard, 542 F.2d 59, 60 (8th Cir. 1976). Nevertheless, we believe that a remand to the district court for further consideration is required. The petition, on its face, at a minimum suggests a prima facie case for relief of some kind. We believe that the district court should promptly schedule a hearing at which the Board may introduce evidence justifying its action, an action which effectively requires the petitioner to serve two-thirds of his sentence before meaningful parole consideration.
V.
As a final note, we caution that this is an extremely limited decision. Kortness was never intended to provide sentencing judges with authority “to supervise, control or second-guess the Parole Board.” United States v. White, 540 F.2d 409, 411 (8th Cir. 1976). On the other hand, the power to sentence remains in the sentencing judge and he may not abdicate that responsibility under a record that on its face indicates that reasonable sentencing expectations may have been frustrated.
[947]*947The prisoner must be released at some time. Thus, society’s interest is served by exercising fair and evenhanded treatment to prisoners by the parole authorities. We suggest that action by the Parole Board which, in effect, increased a prisoner’s sentence without reason, will likely produce bitterness and hostility that could be vented against prison authorities while the prisoner is incarcerated and against society when the prisoner eventually is released.
We vacate the judgment of dismissal of Edwards’ petition for relief and remand this case to the district court for a hearing and further disposition.