BravoSherpa
Member
- Joined
- Jun 21, 2016
- Messages
- 2
I'm working up a new load for my Rowland 460, it's a 155 grain hard cast bullet aimed at larger wildlife protection (also because I like to tinker). I've got some existing published load data for a 160 grain JHP that I can use a start, I can seat the bullet in such a way that the cartridge volume (water capacity in grains) is the same as the published data and the COL is within specs.
I'll certainly start with a very conservative charge (7.5 gr of True Blue I think). My question though is how do I find the upper limits? Should I keep increasing the load until I see case bulging or flattened primers? That idea makes me a bit nervous. I have a chrono and I'm guestimating a target velocity of 1100 fps, but I don't fully trust the readings from my chrono.
Thoughts or advice?
I'll certainly start with a very conservative charge (7.5 gr of True Blue I think). My question though is how do I find the upper limits? Should I keep increasing the load until I see case bulging or flattened primers? That idea makes me a bit nervous. I have a chrono and I'm guestimating a target velocity of 1100 fps, but I don't fully trust the readings from my chrono.
Thoughts or advice?