450Bushmaster.net

Any load data out there for Alliant Power Pro 300MP and 250, 260, 300gr bullets??? AR data specifically.

Google is invaluable for deep searches on this forum. More details on how to use it Here.

I did some testing back in 2013 using 300 MP and 300gr Speer Gold Dots. Link to Thread

Member "pitted bore" did some extensive testing with a bolt action 450b and got them hustling a lot faster than I felt safe doing for my AR. There's a chance to try the Google engine.

Hoot