
611 S.E.2d 764 (2005)
272 Ga. App. 156
GORE
v.
The STATE.
No. A05A0075.
Court of Appeals of Georgia.
March 11, 2005.
*765 Elliott A. Shoenthal, Decatur, for Appellant.
Jeffrey H. Brickman, District Attorney, Barbara B. Conroy, Assistant District Attorney, for Appellee.
MILLER, Judge.
Jamel Gore appeals from a conviction for voluntary manslaughter on the grounds that the evidence was insufficient to support the verdict, that he was denied effective assistance of counsel, and that the trial court erred in its handling of various motions in limine and in its failure to charge the jury on involuntary manslaughter. We find no error and affirm.
1. Gore argues that the evidence was insufficient to support the verdict on voluntary manslaughter. On appeal from a criminal conviction, we view the evidence in the light most favorable to the verdict, with the defendant no longer enjoying a presumption of innocence. Williams v. State, 261 Ga.App. 793, 794(1), 584 S.E.2d 64 (2003). We neither weigh the evidence nor judge the credibility of witnesses, but determine only whether the evidence was sufficient for a rational trier of fact to find the defendant guilty of the charged offense beyond a reasonable doubt. Jackson v. Virginia, 443 U.S. 307, 99 S.Ct. 2781, 61 L.Ed.2d 560 (1979).
Here, an eyewitness testified that he saw Gore shoot the victim in the head without provocation. There was also testimony that Gore had gone to the victim's apartment with a gun to settle a debt. This evidence was more than sufficient to support a conviction for voluntary manslaughter. See Green v. State, 267 Ga. 847, 847-848, 483 S.E.2d 588 (1997) (eyewitness testimony sufficient to affirm murder conviction); Thompkins v. State, 180 Ga.App. 473, 474(1), 349 S.E.2d 768 (1986) (where evidence demands murder verdict, jury instructed on voluntary manslaughter may find defendant guilty on the lesser charge); State v. Clay, 249 Ga. 250, 251(1), 290 S.E.2d 84 (1982) (where evidence supports murder conviction, defendant who requests charge on and is convicted of voluntary manslaughter cannot successfully argue that evidence was insufficient).
2. Gore also asserts that he was denied effective assistance of counsel. He has failed to provide any citations to either the law or the record, let alone an application of authority to that record amounting to legal argument, in support of this assertion. We therefore deem the issue abandoned on appeal. See Court of Appeals Rule 27(c)(3)(i); Dixon v. MARTA 242 Ga.App. 262, 266(4), 529 S.E.2d 398 (2000).
Though we need not do so, we have also reviewed the record, including the transcript of the hearing on Gore's motion for new trial. Counsel's uncontradicted testimony was that (1) she had eleven years of experience as a public defender, including prior murder cases; (2) she met with her client more than five times over a period of months before the trial; (3) her theory of a combination of accident and self-defense was based on Gore's own version of events; and (4) she had been unable to locate an additional witness, but did not need this witness to try the case effectively. There was no ineffective assistance here. See Turner v. State, 245 Ga.App. 294, 295-296(4), 536 S.E.2d 814 (2000).
3. Gore next argues that the trial court erred when it granted the State's motion in limine to exclude evidence that the victim had cocaine in his system at the time of the shooting. At that hearing, the trial court instructed defense counsel to alert the court *766 before introducing evidence of the victim's cocaine use at trial, and suggested that such evidence would be admitted only if Gore could show that the cocaine had affected the victim's behavior. See Daniels v. State, 276 Ga. 632, 633(2), 580 S.E.2d 221 (2003). Gore never attempted to introduce such evidence at trial, however, Thus his claim is without merit. See Frazier v. State, 252 Ga.App. 627, 632(6), 557 S.E.2d 12 (2001).
4. Gore also asserts that the trial court improperly denied his motion in limine to exclude evidence that he had talked about using a gun to collect money from a person other than the victim a week before the shooting, since the indictment did not charge Gore with robbery. Even assuming that this evidence was admitted in error, however, its admission was harmless, since the evidence of Gore's guilt was overwhelming. See Sorrells v. State, 267 Ga. 236, 239-240(5), 476 S.E.2d 571 (1996).
5. In his final enumeration, Gore argues that the trial court erred when it refused his requested jury charge on unlawfulact involuntary manslaughter. Gore testified that the gun went off while he was defending himself. This testimony gives rise only to theories of self-defense and accident, both of which the jury considered and rejected. One witness testified that Gore struck the victim with the barrel of the gun, which went off, killing him. This witness's theory presumes that Gore was committing a felony, since the act of striking the victim with a loaded gun amounted to aggravated assault. See OCGA § 16-5-21(a)(2) (aggravated assault involves use of a deadly weapon "which, when used offensively against a person, is likely to or actually does result in serious bodily injury") (emphasis supplied). Thus Gore was not entitled to a charge on misdemeanor grade involuntary manslaughter. Williams v. State, 249 Ga. 6, 8-9(4), 287 S.E.2d 31 (1982); see OCGA § 16-5-3(a).
Judgment affirmed.
BLACKBURN, P.J., and BERNES, J., concur.
