Accuracy might be terrible shooting roundball out of a 1-28 twist. Then again it might surprise you. The main thing to remember is do not push the roundball too fast or it will cause the projectile to skip the rifling I was told and your accuracy will suffer. Use a low powder charge of about 50 grains is all. I see no reason why you could not use one 50 grain pellet (other then the cost) to shoot roundball. Most of the time people shoot roundball to smooth out their barrels, knocking all the burrs and ruff spots out of them. The same can be done shooting conicals like the 320 grain REALs which your rifle will shoot very good. I would not hunt with a roundball and a low powder charge.

The whole point is, sure you can shoot roundball. Just do not go cranking your sights because you can not get them accurate. They are supposed to be fun. If all you want to do is accurate plink, then get some conicals and plink with them. Or some of the 200 grain SWC in an harvester sabot are excellent shooting projectiles.

Actually my Wolverine II with a low powder charge would surprise people how accurate it shoots the patched roundball. My CVA Staghorn on the other hand shoots the conicals excellent but the roundballs are not the thing to shoot if you want to shoot for great groups...