nchawkeye

OK so let me ask the re-pharse the question again....

What I would like to know going back to the original question and adding this... which twist rate will provide you the best deer hunting accuracy @100 yards or beyond? Adding another stipulation - using the shallow grooved bore of the time.

50/75 yards is not a problem at all with a 1/48. But for myself, shooting a 1/48 going to 100 yards really opens the pattern up, especially when shot with what i would call a hunting load charge 80/90 grains in a 50 cal.

Another question... What size of group might an average shooter expect using open sights @ 100 yards with a PRB?

I understand the deeper grooves are probably superior to todays shallow grooves, but in a production gun available today I think we are limited to shallow grooves...