Winchester Mag Rifle Primers

I am a big fan of Federal Match primers (210 standard and 215 mag).  I have been using Federal primers for 8 years.  My father has a rifle in .300 Weatherby that doesn't do well with Fed 215M primers.  At the suggestion of a gunsmith that he knows, he tried Winchester mag rifle primers, and has been getting GREAT results.  His gunsmith friend uses nothing but Win mag primers for his mag cartriges.  My .338 seems to shoot better with Win mag rifle primers.  Anyway, I ran out of Fed 215M mag primers yesterday (loading some .300 Win) and am thinking about using Win. mag primers on all of my cartridges where I would use a mag primer. 

Has anyone had the same experience with Win mag primers?

I have used win primers in many cartridges.  Also used mag LR primers in 243 to 416 Weatherby.  But I was wrong.  i only use the mag primers in 338 and bigger today, better accuracy from std LR primers in 300 win mag and smaller. Just my experience (I use the mag primers in the 300 Weatherby).

BEAR

Howdy Moose,

I don't recall using any Win. Primers in my magnum cartridges.  However, there are several standard calibers I use Win. primers in - 270, 30-06, etc.

For my magnums, I've had good results with the Federal Gold Medal Match Primers.  First batch I loaded in my 7 RUM Sendero went 5 shots in < 0.50 inch!  Quite pleased and never switched.  A few cents more than the regular stuff but they worked for me.