So I made it to the range with the new to me 300WM and some loads with 180 BTs over charges of H4831SC from 73-75.5. Rifle is a 1980's 700 BDL as it came from Remington with addition of pillars and Devcon. Got it on paper and first 3 shot group at 100yds was a pretty little triangle 5/8" c-c. Yippee! Adjusted scope, moved out to 200, and shot three shot groups in 1/2 grain increments. 73.5 - 74.5 averaged 2" @200 so not horrible. First time I've shot anything bigger than a 30-06 so I'm not displeased. The rifle does recoil and I was getting used to it and trying different holds. The last two loads averaged 1" @200 so I'm happy the rifle shows some promise. Still some work to do but I have an accurate load to hunt with. Pressure is at or near max, but no extraction problems or marks on the case heads. I will measure the web diameter tonight for expansion.
Anyone care to venture a guess at velocity for 75gr H4831 and 180 BT out of a 24" barrel? In my haste, I left the crono at home and won't be able to get back to the range until after the season.
Last edited by gzig5; 11/07/14.
