H4227 Loads for 185 gr 303 and 193 grain 8mm

[baker1425]

Howdy - First post -

I have some 185 grain non gas checked PB bullets that are 311 diameter - and a bunch of H4227 powder. I am not wanting a barn burner, just some plinking ammo for some 303s

Same same for 193 8mm diameter non GC and H4227 in 8x57

I am going to use either WW LRP non mag or CCI #43S military large rifle primers

Thanks!

[26Charlie]

I recommend 14 gr. of H4227 for starters in both cartridges. This ought to give you about 1250 fps, without damaging the plain bases. No filler.
You could work up 1/2 grain at a time until groups widen out, which would likely be around 18-19 gr. Then use the load that groups best and set your sights accordingly.

[baker1425]

thank you, I appreciate the quick response.