Appellant Tywanne Maurice Aldridge appeals his conviction for conspiracy to possess 500 or more grams of cocaine and possession of a firearm in furtherance of a drug trafficking offense. Aldridge argues that the district court1 erred when it submitted a supplemental Allen charge to a deadlocked jury and when it limited the defense’s use of impeachment evidence against a government witness. We affirm as to both issues. However, we vacate the sentence in this case and remand for re-sentencing under the Booker remedial scheme.
I.
Aldridge was tried and convicted for conspiracy to possess 500 or more grams of cocaine and possession of a firearm in furtherance of a drug trafficking offense. Aldridge was arrested as the result of a “reverse sting” operation during which a government agent attempted to sell Al-dridge “sham” drugs. At trial, Aldridge argued an affirmative entrapment defense. As a result, the government had to prove *832that Aldridge was predisposed to commit the crimes charged. To meet that burden, the government called Chris McFarlane, Aldridge’s uncle, to testify that Aldridge was a part of McFarlane’s drug distribution scheme. The trial court barred Al-dridge from cross-examining FBI special agent Rick Young about McFarlane’s debriefing report because a co-defendant objected that such a line of questioning constituted “prior bad act” evidence. The report contained information about Al-dridge and his co-defendants, but in one portion relating to the crimes for which he was charged, Aldridge’s name was omitted.
At the conclusion of the trial, the district court submitted an entrapment jury instruction patterned after the Eighth Circuit Model Criminal Jury Instructions § 9.01. During deliberations, the jury twice requested further instructions on the issue of entrapment. First, the jury asked to review an exhibit relating to entrapment. The district court allowed a tape-recorded phone call to be played for the jury in response to the jury’s request. Second, the jury asked the court to elaborate regarding the definition of entrapment and requested to see a visual aid that had been used in closing argument, but was not admitted into evidence. The jury identified that the exhibit was from a co-defendant, even though only Aldridge was arguing an entrapment defense. The district court did not allow the jury to review the visual aid and again read the jury instruction regarding entrapment.
After further deliberations, the jury reported that they had reached a verdict on two defendants, but were unable to do so on the third. The district court then read the Allen charge to the jury as outlined in the Eighth Circuit Model Criminal Jury Instructions § 10.02. After returning from more deliberation, the jury found Aldridge guilty and his two co-defendants not guilty. Aldridge was sentenced to 157 months in prison.
II.
The first issue raised by Aldridge on appeal is whether the Allen charge issued after the jury’s reported deadlock was improper. Because there was no objection to the supplemental jury instruction, this court reviews the district court decision for plain error. United States v. Holy Bear, 624 F.2d 853, 855 (8th Cir.1980).
An Allen charge is a supplemental jury instruction that advises deadlocked jurors to reconsider and attempt to reach a verdict. Allen v. United States, 164 U.S. 492, 501, 17 S.Ct. 154, 41 L.Ed. 528 (1896); United States v. Walrath, 324 F.3d 966, 970 (8th Cir.2003). This court has held that the issuance of an Allen charge is neither inherently coercive nor prejudicial. United States v. Cortez, 935 F.2d 135, 141 (8th Cir.1991). In order to determine if the charge was improper due to coercive effect, the court must evaluate the context in which it was given. United States v. Felix, 996 F.2d 203, 208 (8th Cir.1993); United States v. Robinson, 953 F.2d 433, 436 (8th Cir.1992).
This court has recognized four factors to consider as to whether an Allen charge was impermissibly coercive: (1) the content of the instruction; (2) the length of deliberation after the Allen charge was issued; (3) the total length of the deliberation; and (4) any indicia that the jury was coerced or pressured. United States v. Warfield, 97 F.3d 1014, 1022 (8th Cir.1996).
In the present matter, the instruction content was the standard instruction from the Eighth Circuit Manual of Model Criminal Jury Instructions. This model instruction has been accepted by this court as *833non-coercive in content. United States v. Thomas, 946 F.2d 73, 76 (8th Cir.1991).
The duration of deliberation after the charge was issued was approximately twenty minutes. There is no established bright-line for an acceptable length of deliberation after an Allen charge. However, this court has found ten minute, United States v. Hiland, 909 F.2d 1114, 1137 (8th Cir.1990), forty-five minute, United States v. Smith, 635 F.2d 716, 721-22 (8th Cir.1980), and one hour, Warfield, 97 F.3d at 1022, deliberation periods to be acceptable. Given that there is no record of how the jury was split at the time of deadlock, it is impossible to speculate as to what switching or convincing took place after the district court issued the Allen charge.
The length of the overall deliberation in this case was two hours and forty-two minutes. Again, there is no clear rule as to the proper amount of deliberation time, and the appropriateness of the deliberation time is dependent on the facts of a particular case. See Smith, 635 F.2d at 721 (weighing deliberation time against facts specific to a case such as complexity and length of the trial). In “simple case[s],” a jury may not need much time to deliberate before an Allen charge is acceptable. Potter v. United States, 691 F.2d 1275, 1277 (8th Cir.1982). Further, this court will not conclude that a charge is coercive based solely upon deliberation time. Robinson, 953 F.2d at 437. For a two-day trial, even with multiple defendants, we cannot say that the overall deliberation time “ was so disproportionate as to raise an inference that the Allen charge coerced the jury.” Smith, 635 F.2d at 722.
There were no other indicators of coercion at the time of the Allen charge. While Aldridge may be correct that the jury could have been confused at not receiving further elaboration regarding entrapment, his counsel’s failure to object can be used to infer that the procedures utilized did not seem coercive at the time. Hiland, 909 F.2d at 1137-38.
Aldridge does not offer sufficient evidence that any of the four factors of coer-civeriess were present. Further, the lack of objection by Aldridge’s counsel at the trial means we review the district court decision with great deference. Therefore, we conclude that the Allen charge was administered within the discretion of the district court, and there is no plain error to justify a reversal.
III.
The second issue raised by Al-dridge on appeal is whether the district court improperly limited his ability to impeach a government witness in violation of Aldridge’s Sixth Amendment right to confront adverse witnesses. We review a trial court’s decision to limit cross-examination for an abuse of discretion. United States v. Brown, 110 F.3d 605, 611 (8th Cir.1997). Our review is also subject to harmless error analysis. Delaware v. Van Arsdall, 475 U.S. 673, 684, 106 S.Ct. 1431, 89 L.Ed.2d 674 (1986).
In this case, Aldridge attempted to cross-examine Agent Young about a report that contained Rule 404(b) evidence that had previously been excluded by the district court. The counsel for a co-defendant objected, and the district court sustained the objection. The evidence in question was a debriefing report based upon McFarlane’s statements to the FBI. The report did not mention Aldridge by name in one instance and, thus, Aldridge argues that it is inconsistent with McFarlane’s testimony that he told the police about Aldridge’s involvement in the drug conspiracy.
The inconsistency in the evidence is hard to evaluate because the same report *834which fails to mention Aldridge’s involvement in one portion, prominently mentions his role in a prior drug transaction in a different section. This is not a case where there are two, clear contradictory statements, but rather one clear statement and one potential omission. This makes the prejudice suffered by Aldridge speculative. Further, the court did not fully exclude the use of the report for impeachment purposes. Rather, the district court only restricted the use of the debriefing report as to one part of the report in one paragraph about the design of the drug distribution network. Aldridge’s counsel did not attempt to use any other part of the report for impeachment purposes.
Further, Aldridge had the opportunity to impeach McFarlane without the use of the report. Generally, if other avenues for impeachment exist, there is no Confrontation Clause issue from the exclusion of particular impeachment evidence. Brown, 110 F.3d at 611. Aldridge had numerous other ways to attack McFar-lane’s credibility on his testimony regarding Aldridge’s role without using the report in a cross-examination of Agent Young. Primarily, Aldridge could have questioned McFarlane about whether the report accurately reflected Aldridge’s involvement. Aldridge also could have called FBI Special Agent Richard Schoe-berl, who assisted the investigation, to the stand to inquire about McFarlane’s statements regarding Aldridge’s involvement. This questioning could have been performed with no mention of the specific Rule 404(b) evidence and would have allowed Aldridge to properly impeach McFarlane if there was an actual inconsistency. Also, each of the defendants did follow several lines of inquiry relating to the credibility of McFarlane’s testimony.
In addition, it is far from clear that Aldridge would have achieved his desired goal of impeachment through his proposed line of questioning. In its proffer to the court, Aldridge’s counsel did not call Agent Young to admit that McFarlane had not told him about Aldridge’s involvement in the drug conspiracy. Given that the same report in question mentioned Aldridge’s involvement in a separate paragraph, it seems likely that Agent Young would have affirmed McFarlane’s testimony on Al-dridge’s involvement. Since Aldridge’s counsel failed to proffer Agent Young’s testimony, there is no clear record that the defendant was prejudiced by the district court’s decision to bar the report related questioning.
Aldridge relies on United States v. Barnes, 798 F.2d 283 (8th Cir.1986), to support the argument that the trial court erred. However, in Barnes, the defense was barred from cross-examining a police officer who had withheld tape recordings and lied under oath about the existence of those tape recordings. The defense had sought to impeach that police officer on such evidence, but the trial court disallowed it based on a prior ruling in a pretrial setting. This is distinguishable from the present matter because, in this case, there are no allegations of government suppression and misconduct, the impeachment is much more speculative, and the defense had other opportunities to impeach the witness without using the excluded evidence.
Given the ambiguities in the alleged inconsistency, the multiple avenues of attack available to the defense for impeachment, and the speculative nature of the impeachment evidence, this court would be straining to find an abuse of discretion by the district court.
Even if this court had found that the district court had exceeded its discretion in barring Aldridge’s use of the debriefing report in cross-examination, it is hard to *835see how the harm done would rise above the level of harmless error. Even if Al-dridge was improperly restricted in his use of the report, there is no Confrontation Clause violation if “the- error was harmless in the context of the trial as a whole.” United States v. Caldwell, 88 F.3d 522, 524 (8th Cir.1996). Because the impeachment was so speculative, the inconsistency in the report was far from apparent, and there was significant other evidence against Al-dridge, it is difficult to support the notion that there is reversible error in this matter.
IV.
Subsequent to the issuance of the Supreme Court decision in United States v. Booker, — U.S. —, 125 S.Ct. 738, 160 L.Ed.2d 621 (2005), we directed the parties to file supplemental briefs. In light of that supplemental briefing, we now vacate the sentence imposed and remand for resen-tencing using the Booker remedial scheme.
Subsequent to the Booker decision, our en banc court decided United States v. Pirani, 406 F.3d 543 (8th Cir.2005). In Pirani, we addressed several issues. These included the question of how “Booker error” is to be preserved and if there is no preservation of error, the standard to be applied under the plain error analysis of United States v. Olano, 507 U.S. 725, 113 S.Ct. 1770, 123 L.Ed.2d 508 (1993). As Pirani discusses, there are four factors that must be satisfiéd under Olanó to establish plain error and correct an error that was not raised at trial. As articulated in Johnson v. United States, 318 U.S. 189, 199, 63 S.Ct. 549, 87 L.Ed. 704 (1943) the standard is as follows:
before an appellate court can correct an error not raised at trial, there must be (1) error, (2) that is plain, and (3) that affects substantial rights. If all three conditions are met, an appellate court may then exercise its discretion to notice a forfeited error, but only if (4) the error seriously affects the fairness, integrity, or public reputation of judicial proceedings.
In this case, the district judge made quantity findings and other determinations using a preponderance of the evidence standard. Accordingly, we now know that under Booker, there is error, and as explained in Pirani, the error is plain. Consequently, we turn to the third Olano factor. That is, does the error effect substantial rights? As Pirani explained, we must decide if there is a’ reasonable probability the defendant would have received a more favorable sentence under an advisory guideline regime. Pira-ni, at 567. In this case, we conclude that the defendant has made such a showing. In reviewing the supplemental brief, as well as the sentencing transcript, we note that the district judge specifically indicated at page 11 of the sentencing transcript:
I believe that the government chose to make a deal with the older, wiser, and more culpable defendant in this case. And I don’t mean to suggest that Mr. Aldridge is not responsible for his actions, but I had never thought it appropriate that he be serving more time than his uncle.
The defendant, Aldridge, received a total sentence of 157 'months: 97 months for the drug conspiracy, and a 60 months mandatory consecutive sentence for the § 924(c) gun charge. His uncle, who the district court considered to be significantly more culpable, received a sentence of 100 months. Based upon the sentencing transcript in this case, we believe that there is a reasonable probability that if the district court had the discretion to treat the guidelines as advisory, it would have imposed a sentence closer to the sentence received by *836Mr. Adridge’s uncle. Accordingly, we reverse the sentence and remand for resen-tencing.
V.
Accordingly, the judgment of the district court is affirmed as to the defendant’s conviction. The sentence is vacated and remanded for resentencing pursuant to the Booker remedial scheme.
. The Honorable Nanette K. Laughrey, United States District Judge for the Western District of Missouri.