brentc
Well-Known Member
- Joined
- Apr 3, 2009
- Messages
- 2,644
How many have been having success with factory 1:10 twist? I have a buddy who bought a Sendero 300 win mag and it doesnt shoot the 215's? I know they recommend 1:9 twist with the slower speeds they produce out of the 300 win. My ultra shoots 215's unreal but 3125 fps.
Interesting. Every Sendero, 5R, or 700 LR that I've loaded for has shot the 215 very well with 77 grains of H1000 at a Hornady comparator Ogive length of 2.846" in Nosler/Norma brass. Not sure what it is about that length, but it works and they feed from the magazine perfectly.
The 10 twist has worked perfectly for me even in below zero temps at < 1000 feet ASL.