Thread: Powder sensitivity over heat variation .308 11 powders

https://www.wlcastleman.com/equip/shoot/t308/index.htm
This is a link to a powder test done ( in the US naturally)
Where you see Varget read AR2208
Where you see H4895 read AR2206H
Where you see IMR8208 XBR read AR BM8208

With a lot of people changing powders due to their favourite flavour being hard to get, this may help a few not to get too excited about loads developed in the summer versus being shot in the winter.

Usually you only get test data on one type of powder, this guy went to a lot of trouble and got the data for 11 powders!

The data is from 2022 so pretty relevant for 2023 still. if you go to his home page he has done research on .223 with 9 powders as well, but I havent read that.