45-70 Cowboy/light recoil loads with jacketed 300gn

I've never experimented with that variable but it stands to reason that a hotter primer would elevate the pressure faster than the standard ones and give a little better burn with stubborn powders.
 
I'm sure not going to claim that it is essential to use Magnum primers in 45-70 or any "large case volume" loadings when loaded down for plinking or different action strengths...but if I have them on hand, I will preferably use them.

while I have no testing equipment to back up my notions, I think that a larger ignition fireball inside a cavernous area just about has to help in powder ignition and I don't feel pressure dangers are a worry in my BP equivalent loadings.
 
fingers284 said:
I'm sure not going to claim that it is essential to use Magnum primers in 45-70 or any "large case volume" loadings when loaded down for plinking or different action strengths...but if I have them on hand, I will preferably use them.

while I have no testing equipment to back up my notions, I think that a larger ignition fireball inside a cavernous area just about has to help in powder ignition and I don't feel pressure dangers are a worry in my BP equivalent loadings.
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Got it, thanks. And no real cons to using magnum primers as long as your hammer strikes are heavy enough.
 
alpining said:
Got it, thanks. And no real cons to using magnum primers as long as your hammer strikes are heavy enough.
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Dont know of any difference between Mag or standard primers within the same brand however there is considerable difference between brands that are a problem with lower hammer strike force rifles. If you are using a rifle or handgun that the trigger pull can be regulated by the hammer main spring, primer brand will become a critical choice, Federal being the easiest to fire with slow hammers.
 
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