Cheyenne 1
Well-Known Member
- Joined
- Dec 9, 2007
- Messages
- 101
I was just started making some loads for my newest rifle. A remington 700 in 257stw. Using remington brass, CCI magum primers and RL-25. Started out with 77 grns, ended up at 81. Problem seems to be with the larger powder charges are really sensitive to temperature change. It is a little cold here, about 14F.
I didn't think the last couple of loads were what they should be. I put the last 2 in my pocket to warm them up and both were exactly the same speed 3875, the ones before at outside temp were at 3760. That seems like way too much of a spread.
I have read (Now) that the r-25 will do this. Anybody else have this problem? What about the Hodgon extreme powders, they claim that it will not change with temperature?
Where I hunt it can go from 50F to 40 below 0.
Thanks
I didn't think the last couple of loads were what they should be. I put the last 2 in my pocket to warm them up and both were exactly the same speed 3875, the ones before at outside temp were at 3760. That seems like way too much of a spread.
I have read (Now) that the r-25 will do this. Anybody else have this problem? What about the Hodgon extreme powders, they claim that it will not change with temperature?
Where I hunt it can go from 50F to 40 below 0.
Thanks