300 winmag help

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Firpo

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H4831sc I just got back from a few places that didn’t have anything I needed
Gotcha. I misunderstood and thought that was what you were using but assumed like most of us reloaders you had a few more choices. I’d personally not change to much at once and try that powder with the 180 grain bullets. My Hornady manual shows H4831 with loads from 68.2g-74.8 g with that weight bullet. Just start low and work your way up.
 

Okie4570

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I've shot everything from 125gr to 200gr with RL19, IMR4895, IMR4350, and a few with RL25. I've never tried to really push any of them and didn't have any accuracy issues with just middle of the road velocities out of a TC Encore, Rem 700 and a Ruger M77. The 125gr out of the Encore was the most accurate 300 win mag load ever for me, of all things lol.
 

kwaynem

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79 grains Reloader 22, Federal 215 M primer, 165 grain projectile. Hopefully you can find some. It's my go to recipe for my 300 WM. If not your H4831 sc has a similar burn rate so try the same load with it.
Funny you should say 79 grain I just loaded 3 with that had 2 almost touching and the other an inch off which I think was me I’m going to load 5 more at 79.0 and try them this weekend
 

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