02-09-2020, 12:28 PM
A5BLASTER Wrote:When loading with powders that are known too spike aka temp swing. It's best to wait till it's good and summer to work up a load.
If not then when the summer temps hit mid 80's to 90's it might swing so hard that I will become a dangerous load.
Reverse of that is come winter the load might fall apart and not group well and be much slower.
This is why I'm moving away from h335,cfe223,leverevolution, ppv and probably mr2000 and aa2520.
I have done started reworking my loads with h4895,ar-comp, h322,varget.
These are just some of the very temp stable powders that will work in the grendel.
I'll agree with you on the AA2520. Missed a broad side coyote at 110 yards last week. Aimed center mass complete miss. Had the gun zeroed at 200. Put up a target at 200 shot 10" low. Back to the loading bench. Developed that load last august.