powders and primers
Any one have advice on some reloading stuff, I am shooting noslers 140's in a 260 rem, using h4831 with different weights,43, 44,45,46, I found the 45 gave me the lowest ES at 24-25 fps, and a SD of 9.45, at 2856 av speed,at .465 " is a sample of 10 shots enough?
I tried some Ramshot hunter with these bullets and got over 100 fps differences at 44 and 45 gr weights, looks like the H4831 is much tighter. the 45 and 46 gr are a bit compressed, working within my COAL.
I have shot about 50 rounds overall with the 45 grains and average under a half inch ,with some groups in one basic hole.
When loading for long distance should one initially shoot for low ES and SD regardless of accuracy and not be checking accuracy as you go( to save time?)
1 so whats a good way to match up primers with powder?
2 do you worry about cleaning the barrell between shots or groups of shots to keep things the same?
3 how about barrel heating? how long b/t shots?
4 when doing fine tuning with the powder how much should you increase/decrease powder to find the best weight so if 45 is pretty good should I try to go up in tenths of a grain or more at a time?
5 any influence from primer seating depth?
Thanks again in advance Scott