IMO. standard 2506? using the rule (?) of 1000ft lbs energy its about 400yds for the 100 gr and alittle more for the 115. the ackley gives me 100-150 yds more. its worth 150-200fps to start with. this is comparing my old 25 with a 24" and my ai has a 26.75" barrel. last year the 115 passed thru the antelope, high shoulders, exit hole was 3"dia. 400yds
my longest shot with it sofar is 550yds. nice calm day. with any wind ,10+ ,I will just stalk alittle closer. better safe than sorry. one last thing, I do reload and shoot fairly often. I study the rifle, the game and the area I hunt. it all helps.