Originally Posted by minsane
Would SS109 ammo be a better practice round?
No...SS109 would not be good for practice. Not only is it not very accurate, the ballistics are quite different from heavy match ammo.
You should practice with the same ammo you shoot in competition. The purpose of practice is to become proficient with the ammo you use at the matches. Otherwise, you're just burning up your barrel with no real benefit.