DesertRatR
Member
- Joined
- Jul 26, 2015
- Messages
- 1
I loaded up 50 rounds of 45 LC 250 gr LRNFP with 8.5 gr Unique. The closet data in my Speer manual for Unique was for 250 gr LSWC, starting at 8.6 gr Unique. OAL listed for LSWC was 1.600". I set LRNFP OAL at 1.600" which put crimp right in the cannelure. Speed listed for 250 gr LSWC was 891 fps. I chronographed the 50 out of my Ruger New Vaquero. To my surprise average speed came in at 1014 fps with std dev 24 fps. Recoil was noticeably greater than the factory reloads I'd been shooting. After tumbling brass I checked and found none cracked or bulged. After sizing all brass looks good.
Why the > 10% speed increase for less powder than the manual calls for almost the same bullet? Both are same weight and same diameter at 0.452". I don't think it is all aerodynamics. I don't want to risk the gun nor my Henry.
Why the > 10% speed increase for less powder than the manual calls for almost the same bullet? Both are same weight and same diameter at 0.452". I don't think it is all aerodynamics. I don't want to risk the gun nor my Henry.