I think the limiting factor mostly is the drop, when you get out past about 150 yds.... If I had a good scoped 30-30, and had spent adequate time with it at the range, I wouldn't feel undergunned for probably 95% of ALL deer hunting situations.... so, Bocephus... if you can keep all your shots inside 4-6" at 100yds, then you will kill your deer... as long as you remain calm, and squeeze the trigger. I personally think you have a DANDY rifle to hunt deer with. Use whichever bullet weight groups best in your rifle... the deer won't be able to tell the difference out to 100 or 150yds.... and no matter what anyone else tries to tell you, 150yds is a pretty long shot. You have to know your limitations, and the limitations of your rifle.. and it sounds like you do. Good luck with your hunt.

"Progress, far from consisting in change, depends on retentiveness..those who cannot remember the past are condemned to repeat it." Santayana