magnum primers in 450 marlin

[300winman]

I'm new to reloading, so don't beat me up too hard.  I was loading 400gr 450 malin ammo, I triple checked everything except the primers I was using.  From their website, hodgdon says to use winchester lr primers.  I used the winchester lr for magnum rifle.  Will this give too high of a chamber pressure or not.  I only loaded them to starting load--400gr speer fn over 48.0 grains of H322.  34800 psi pressure is low for the caliber, but I need alittle expert advise on whether tear these loads apart or go ahead and shoot them.

[EsoxLucius]

Winchester Large Rifle primers are probably the hottest large rifle primer produced.  If they are starting loads with a magnum primer they are OK to shoot.  While magnum primers can increase the pressure over using standard primers I doubt it is enough to go from 34,800 PSI to over the maximum of 43,500 PSI.

[300winman]

Thanks for the input.  I figured I was good, but better to be safe than sorry. Plus I get to shoot the ammo rather than tear it down.

[KN]

Thats all I use in my 450 and 45/70 loads. I am using H-322 as a powder though and I get a much cleaner burn using mag primers over std.   KN