[quote author=drck1000 link=topic=39748.msg380233#msg380233 date=1624047558
So question for you centerfire reloaders. Do you ALWAYS stick with charge weights less than the manual? No matter the velocity you're seeing? Or do you usually push a little beyond the max charge weight and watch for signs of overpressure? I spoke to a few shooting buddies and the responses ran the range. I hope to get to doing the powder charge tests soon and my initial thought was to go beyond the max charge by maybe 2-3 steps (0.2 gr increments). It would be 2x per charge weight, so not a whole lot of effort.
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I’d say as long as you’ve worked up to the max charge. For example min: 37.5gr max: 41.6gr If my current load development took me to 39gr, I wouldn’t jump to the max but work it up to there watching for over pressures (I ended up at 42.9gr). I would also say it depends on the goals of your loads. I went over to get better velocities when I was able to shoot up to 600yrds. If you’re doing the same, it makes sense to me to go over max. I’m actually re-doing my development process to find nodes below max charge (no need high velocity at 100yrds). I don’t anneal, and going over max charge worked the brass (had to toss brass at 5-6 reloads, loose primer pockets).
Some things to take into consideration for pressure differences (from books or online data like
https://www.hodgdonreloading.com/reloading-data-center) COAL if you are limited in length for a magazine, different primers/powders, and case volume. Good luck!