| FATBOY404 |
| (.400 member) |
| 07/01/10 07:52 PM |
Re: 375 H&H - Magnum or large rifle primer?
|
I run magnum primers in all of my rifles including my 6-223 . They seem to be harder in the cup & in some testing I've done they give 30 -50 fps more velosity over a standard primer with the same amount of powder.