I haven't shot H335 in the cold, but I worked up my AI load ( 28.5 grains H335 and a Barnes 55 TTSX) in Montana at about 50 degrees...took it to Texas, checked zero at 90 degrees and blew the first and only primer I tried...put the gun up and used a spare...
That aint my AI load now....
Last edited by ingwe; 10/01/15.