I agree MD. I won’t shoot 335 over 80 degrees. 2 of my favorite loads in a 223 won’t get used over 90 degrees. 26.5 grains BM and a 52 is a very accurate load, but on a 95 degree day it gave me issues such as stiff bolt lift. Finished that match with a load of 25.8 with no issues. Finished off that 26.5 batch in 70-80 weather with zero issues as usual. My other is 24 grains LT32 and a 52 that has to be backed down to 23.5 at 90+.
So my conclusion was that max or slightly over max loads don’t play well at 90-100 degrees even with temp resistant extreme powders like BM.


Swifty