I've been shooting 3031 in my 223's since Herters powders went off the market, 25gr under a 50gr bullet. It was pretty much a do all load coyotes, fox, beaver(control), ground squirrels and even target shooting. I wore the barrel out on that 223 . I still use it in a variety of cartridges, it is hard to fine a old time cartridge that doesn't have load data for 3031.

After the first shot the rest are just noise.

Make mine a Minaska

Heaven has walls and rules, H-ll has open borders