Kenneth Blankenship appeals the district court’s summary denial of his postconviction motion attacking his sentence on a claim of ineffective assistance of counsel. See 28[*337] U.S.C. § 2255 (1996). He argues that the district court erred by denying his motion without a hearing and by not providing any case-specific reasons for the summary disposition. We affirm.

I.

In 1992, Blankenship entered a conditional guilty plea to being a felon in possession of a firearm, in violation of 18 U.S.C. § 922(g) (1988), and a panel of this court affirmed his conviction. See United States v. Blankenship, 67 F.3d 673, 678 (8th Cir.1995). Our prior panel opinion set forth the facts of this case, see id. at 674-75, 678, which we briefly summarize here. A man named John Kel-lick, his girlfriend, and two others, went to Blankenship’s trailer home late one night seeking money that Kelliek claimed Blankenship owed him. Id. at 674. An argument ensued between Kelliek and Blankenship. Id. Blankenship said Kelliek was intoxicated and threatened to harm Blankenship’s family. Id. at 678. Wuen the argument escalated, Blankenship returned inside his trailer (which did not have a telephone), left through a back door, and walked to his father’s nearby trailer (which also had no telephone). Id. at 674, 678. There, he retrieved a shotgun and returned to the confrontation at his own home in an asserted effort to protect his family. Id. When a scuffle broke out, the shotgun Blankenship carried discharged, killing Kelliek. Id.

Blankenship pleaded guilty to being a felon in possession of a firearm, but conditioned his guilty plea upon preserving his right to raise two issues on appeal: (1) the district court’s denial of his motion to dismiss the indictment on the basis of the Speedy Trial Act, 18 U.S.C. § 3161-3174; and (2) the district court’s rejection of his asserted justification defense. A panel of this court rejected Blankenship’s arguments and affirmed the judgment of the district court. Id. at 678.

Currently pending is Blankenship’s first 28 U.S.C. § 2255 motion, in which he claims that his counsel was ineffective at sentencing for not requesting a downward departure from the federal Sentencing Guidelines on the ground that the wrongful conduct of Kel-lick, the victim, contributed significantly to provoking the offense. See U.S. Sentencing Guidelines Manual § 5K2.10 (1995) (Policy Statement). The district court summarily denied the motion without holding an eviden-tiary hearing and without providing reasons for the summary disposition. Blankenship appealed, and this court granted a certificate of appealability for his ineffective assistance of counsel claim.

II.

On appeal, Blankenship argues that the district court erred by summarily denying habeas relief without holding a hearing on his ineffective assistance of counsel claim. We review for an abuse of discretion the district court’s decision to deny a section 2255 motion without a hearing, and we review de novo the district court’s rejection of the claims involved. Payne v. United States, 78 F.3d 343, 347 (8th Cir.1996). A section 2255 “petitioner is entitled to an evidentiary hearing when the facts alleged, if true, would entitle him to relief,” id. (internal quotations omitted), unless the motion, files, and records of the ease conclusively show that the movant is not entitled to relief. 28 U.S.C. § 2255; Engelen v. United States, 68 F.3d 238, 240 (8th Cir.1995). “Accordingly, a petition can be dismissed without a hearing if (1) the petitioner’s allegations, accepted as true, would not entitle the petitioner to relief, or (2) the allegations cannot be accepted as true because they are contradicted by the record, inherently incredible, or conclusions rather than statements of fact.” Id. Thus, to determine whether Blankenship was entitled to an evidentiary hearing, we must consider the validity of his allegation of ineffective assistance of counsel in light of the record in his case.

The district court’s summary dismissal does not expressly state its reasons for rejecting Blankenship’s claim of ineffective assistance, and Blankenship seeks a remand to allow the district court to articulate its reasons. While the preferred practice would most certainly be for the district court to have enumerated its reasons for the summary dismissal, our review of the district court’s rejection of the claims involved is de[*338] novo. See Payne, 78 F.3d at 347. We conclude that a remand is not necessary, and we may affirm the district court on any basis supported by the record.^[1]

To prevail on an allegation of ineffective assistance of counsel at sentencing, Blankenship must show both (1) that his attorney’s performance was deficient, falling below professional standards of competence; and (2) that the deficient performance prejudiced his defense. See Strickland v. Washington, 466 U.S. 668, 687, 104 S.Ct. 2052, 80 L.Ed.2d 674 (1984); see also Wajda v. United States, 64 F.3d 385, 387 (8th Cir.1995). In assessing counsel’s performance, courts defer to reasonable trial strategies and “indulge a strong presumption that counsel’s conduct falls within the wide range of reasonable professional assistance.” Strickland, 466 U.S. at 689, 104 S.Ct. 2052; see also Henderson v. Norris, 118 F.3d 1283, 1287 (8th Cir.1997), cert. denied, — U.S. -, 118 S.Ct. 1081, 140 L.Ed.2d 138 (1998). When considering whether the defense suffered prejudice, a court must determine whether “there is a reasonable probability [sufficient to undermine confidence in the outcome] that, but for counsel’s unprofessional errors, the result of the proceeding would have been different.” Strickland, 466 U.S. at 694, 104 S.Ct. 2052; Wise v. Bowersox, 136 F.3d 1197, 1206 (8th Cir.1998). We also consider “whether the result of the proceeding was fundamentally unfair or unreliable.” Lockhart v. Fretwell, 506 U.S. 364, 369, 113 S.Ct. 838, 122 L.Ed.2d 180 (1993).

Turning first to the prejudice prong of the familiar Strickland test, we recognize that we need not address the competency of counsel’s performance if the prejudice issue is dispositive. See 466 U.S. at 697, 104 S.Ct. 2052 (noting “a court need not determine whether counsel’s performance was deficient before examining the prejudice suffered by the defendant as a result of the alleged deficiencies”); see also United States v. Apfel, 97 F.3d 1074, 1076 (8th Cir.1996). We consider whether the motion for downward departure, which Blankenship asserts his counsel should have made, had a reasonable probability of affecting the outcome or fundamental fairness of Blankenship’s sentencing. No prejudice arises from counsel’s failure to raise a claim that had little likelihood of success on the merits. See Thomas v. United States, 951 F.2d 902, 904-05 (8th Cir.1991).

The federal Sentencing Guidelines provide that a district court may grant a downward departure “below the guideline range to reflect the nature and circumstances of the offense” in cases where “the victim’s wrongful conduct contributed significantly to provoking the offense behavior.” USSG § 5K2.10, p.s. This policy statement further provides factors to consider “in deciding the extent of a sentence reduction” on this basis. Id. These factors include the relevant physical characteristics of the victim in comparison with those of the defendant, the defendant’s efforts to prevent a confrontation, the danger either reasonably perceived by the defendant or actually presented by the victim, and “any other relevant conduct by the victim that substantially contributed to the danger presented.” Id. § 5K2.10(a)-(e), p.s.

In his affidavit in support of his ineffective assistance of counsel claim, Blankenship states that he was awakened one night by Kellick and a group of people outside his trailer home. He asserts that Kellick appeared to be drunk and threatened to harm Blankenship’s father. Fearing for his family’s safety, Blankenship then left his trailer by the back door, retrieved a gun from his father’s trailer, and returned, intending to scare Kellick into leaving. After a struggle, the shotgun discharged, killing Kellick. Blankenship then had his wife call the police from a neighbor’s house. Blankenship asserts that Kellick had a reputation for violence. (See Appellant’s Adden. at 15-17.) We note that these same facts were before the district court and this court on direct appeal in support of Blankenship’s justification defense, which was rejected as a matter of law. See Blankenship, 67 F.3d at 678. Aware of these facts (as well as the Presen-[*339] tence Investigation Report’s recommendation of an upward departure on the ground that the seriousness of his criminal history was under-represented), the district court sentenced Blankenship at the top of the applicable Guidelines sentencing range. In his direct appeal, we held that even if this circuit recognized a justification defense, Blankenship’s evidence did not satisfy the requisite elements of such a defense because he “recklessly placed himself in the situation,” purposefully returned to continue the confrontation after retrieving a gun, and had “reasonable alternatives” aside from escalating the confrontation, including avoiding the confrontation by staying inside his home. Id. Additionally, we concluded that “there was no evidence that Kellick was armed or presented a real threat of serious harm to Blankenship or his family.” Id. While a defendant need not prove the elements of a justification defense in order to obtain a downward departure on the basis of the victim’s wrongful conduct, the specific findings in the record of this ease regarding those elements eliminate any reasonable likelihood that the district court would have granted a downward departure on the basis of the victim’s wrongful conduct.

A section 5K2.10 motion for downward departure is warranted when the victim’s behavior significantly contributed to provoking the behavior of the offense, which in this ease is possession of a firearm by a convicted felon. This policy statement manifests a concern for proportionality in the defendant’s response. See United States v. Shortt, 919 F.2d 1325, 1328 (8th Cir.1990) (holding that while adultery is wrongful, departure was not warranted because a plot to blow up the adulterers is a disproportionate response to such conduct). The record here indicates that the victim, Kellick, wrongfully started or provoked a confrontation outside Blankenship’s home, but he was not armed and presented no serious threat of harm. Blankenship chose to enter into the confrontation and then to escalate the confrontation by leaving and returning with a loaded weapon, though other reasonable alternatives were available to him. He could have as easily sent his wife to call the police at the outset of the argument as he did at its tragic end. On this record, we are convinced that the district court would not have concluded that the victim’s wrongful conduct substantially contributed to the behavior of the offense — being a felon in possession of a firearm — because Blankenship’s response was disproportionate to the threat posed by the victim’s conduct.

Blankenship argues that a downward departure was probable because his case is similar to the facts of United States v. Yellow Earrings, 891 F.2d 650, 653-54 (8th Cir.1989). In that case, this court affirmed the district court’s grant of a downward departure motion based on the victim’s wrongful conduct where the defendant stabbed the victim after the victim had attempted to sexually abuse the defendant. Id. We conclude that the situation in Yellow Earrings was not similar to the ease at hand. First, the victim in Yellow Earrings was in the same room as the defendant and was attempting to force intercourse on the defendant; the victim also verbally abused the defendant. The victim’s violent and abusive behavior provoked a violent response from the defendant. Id. To the contrary, while Kellick’s conduct was wrongful, he had not become violent but was merely yelling outside the trailer house, and he did not have a weapon. Blankenship’s response of bringing a weapon into this situation simply was not proportionate to the threat. Second, in this habeas case we are bound by the findings and conclusions already of record. Specifically, the record contains specific findings that the victim was not a serious threat and was not armed. The district court did not have discretion to ignore the existing record, and we reject Blankenship’s contention that Yellow Earrings is dispositive here.

Our review of the record convinces us that Blankenship has not established a reasonable probability that the result of his sentencing would have been different had his attorney sought a downward departure on the basis of the victim’s wrongful conduct. Thus, his ineffective assistance of counsel claim fails for lack of a showing of prejudice. Also as noted above, because we affirm upon our de novo review of the record and for the reasons stated, we reject Blankenship’s argument[*340] that the ease must be remanded for the district court to articulate its case-specific findings supporting summary disposition.

III.

Accordingly, we affirm the judgment of the district court.