? large rifle primers vs large rifle magnum primer

Fireman Mike

Is it possible to use large rifle magnum primers if you decrease the load, in place of large rifle primers?

Tailgunner1954

Yep, as a rule of thumb drop back 2gr and work your way back up 1/2gr at a time until your groups/velocity come back

Fireman Mike

Thank you very much. I almost out of large rifle, but still have 4000 magnum.

DENWA

Just FYI,

If using 308 or similar size case, reduce your load about 1 grain.

If 30-06 or larger, you'll notice very little difference if any.

I actually prefer them in my 30-06 with heavy loads of IMR4350.

bpost

From my experience the difference is not noticeable. If you are on the top edge of the load I would back down .3 and try it first.

I do not load standard rounds that hot so the substitution is never a problem and may improve your group size.

k_townman

Yup, it all sounds good to me. Have fun.