I’ve got a load worked up with IMR8133 for my 7mm STW but I’ve heard a lot of folks using H1000 in their STW. I was able to score 2 lbs of H1000 today. Any reviews on the powder used in your rifle vs others?
RL22 is the stuff but she's crazy temp sensitiverl25 in a stw with mid weight pills, h50bmg or similar with heavies... Rl22 may work fine with 140's if your rifle isn't happy with rl25... Ball powder like 8700 will do decently... h1000 is very happy in slightly less overbore rounds with heavy pills-- think 300win and 200-215 gr slugs.
Not really if you don't push it that hard. I run it with 165's in my 300win and she's right at 3200 in cold weather and 3250-3280 in hot weather... The only time she get's above 3250 is when it's hot enough I probably shouldn't be shooting the rifle anyway. I also run it with 140's in my kid's 7rem. We haven't even bothered to chrono the rifle cold/hot yet as we are at 68gr. If I were running 70'ish I would to see what the difference is, but it shoots same poi at 200 in cold or hot and it's a mid range rifle for him.RL22 is the stuff but she's crazy temp sensitive