Mag primer vs. Benchrest

FrancF

What are you thoughts on Mag. primers vs. Bench rest primers?
lets say-
If you are getting near a max load what is the better way, or a safer
primer to use? This is an argument (friendly but worth a look at)
"It Cost a REM 700"

***********IMPORTANT************
DO NOT USE THIS LOAD DATA for your Rifle!!!!!!!!!!!!!!

I had a buddy that turned me to a load for a 22-250.
37.5gr. H380 55gr.SX jacketed bullet /W REM Mag. primers.

Long Story short,We both had the same loads, shot at the range
everything is perfect Outstanding groups no pressure signs etc.

Next day, we go out bustin Varmints and by afternoon it gets hot out 90 deg.
I am still shooting and knock em dead. He can't hit crap all of a sudden. We did a range check at 25 yards, the bullet was vaperizing as it cam out the barrel. Next try took out the action in his 700 ADL. Now The Question
What is A hotter primer? (I my self reduce my load buy .75 grains for the Mag. primer)

Mag.
Or
Benchrest




"The tree of life Is self Pruning"

groundhog devastation

BR primers are made more uniformly than standard primers. Magnum primers in my experience an I'll probabably get called on this one but it's my experience in VA and for 27 years of reloading shooting varmints, BR, and what ever else I choose to shoot, if using Magnum primers you can expect the change to be equal to 1-1.5 grains of chosen propellent!!! I very seldom ever use Mag primers. Only in a few cases with select powders. I tend to favor Federal Match primers both large and small and also use CCI-BR both large and small. Magnum primers can complicate your reloading!!! GHD

groundhog devastation

What do you mean "Took out the action in his ADL"? Did he force the lugs off the bolt or just peel the front of the bolt face off or what? If he forced the lugs off then you would have had somewhere to go about 1:00PM a couple days later (place where they grow marble)! GHD

FrancF

Thats my same thought! If you use a Mag primer you have got to reduce your load.

See H , I told ya!

"H" (my buddy) is watching this post-

Thanks

"The Tree of life IS self pruning"

v35

I'd go with the BR primers. In the '80s I did some high pressure experimentation up to about 75kpsi in a copper crusher fixture.
Small rifle primers were used and Rem BR gave the most uniform pressure & velocity data.

cowdoc

i have read some where that some powders can create excesive pressures when the temp get very got so charges needs to be reduced when shooting in extremly hot temps also.
i know cold temps can do the reverse "low presure" one time i had gun and shells in pickup and seen a coyote near house so grabed the rifle and shells out of pickup and shot at the coyote at about 150 yds... the bullet hit the ground at about 100 yds this was a 270 win at temps near 30 below zero, so now i only use hodgdon extreme powders
doc

I dont give my guns without somebody getting hurt!

Nighthawk

I would definantely consider GHD an authority on the subject.I load for my 22-250 and only use BR primers.



Best!!!

Rugster