Re: 300 win load
A pretty "standard" RL 22 load with 180's is around 75 grains and for 200's is around 73 or so. If you search around the internet youll see these loads come up again and again. Ive shot less than MOA with these loads out to 1000yds, BUT Im trying to find another powder as you are.
Ive read alot of bad stuff about temperature variations and lot-lot variations with RL22 so Ive been testing H1000(79.5), Ramshot Magnum(79.0) and N165(73.0). Im still in the process of testing, and have had good results with all 3 but need to test @ 600-1000yds. 72.0 N165 with the 210 Berger was a standard load for the AMU for quite a few years FWIW. With RL 22 I was getting 3033fps with a 200, and have only got from 2850-2950 with the other powders listed above, with good accuracy. Now dont get me wrong, speed isnt everything, Id rather have a consistent load at less velocity than a faster one that isnt consistent across a wide range of conditions. I compared 2850fps versus 2950fps on JBM and it only came out to a 6" difference in wind drift @ 1000 yds for a full value 10mph wind. If you want Ill post my results when I get finished.