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I bought some H-1000 and Magpro, I am hoping the large rifle will work with those.You're not dealing with any of the super slow powders for those, e.g. H4831, RL22, etc.
If you dig deep enough, you'll find articles on primer brisance, and other articles on load development accuracy using different primers, like using standard in place of Magnum, etc.
Forge ahead and don't worry about it.
That is surprising, do you remember what powder you used in those loads.I once subbed large pistol primers instead of large pistol magnum for my 50 Beowulf. Two hangfires in a row they got demilled. Way different than what the op is trying but just my experience.
I have used large rifle magnum primers exclusively with those two powders in .270WSM and .300 Win Mag loads. A couple decades ago I tested different primers with Vihtavuori N-165 in my .270WSM and found the best accuracy with standard Federal 210 primers and my 65.0 gr load. H-1000 might be okay with standard caps, but MagPro, being a slow burning spherical powder might need the hotter primers to get proper ignition, particularly in cold weather.I bought some H-1000 and Magpro, I am hoping the large rifle will work with those.
I found a chart that listed Winchester as just below Magnum primers.It kind of depends on the brand of primers. One brands standard primer could be hotter than another brands magnum primer. From what l remember, European primers, especially Russian had some serious spark compared to American brands.
I was using Lil' GunThat is surprising, do you remember what powder you used in those loads.
I heard that lil' gun is fussy stuff. I received a number of jugs of it with the big 300BO lot I bought. It seems like it has a very narrow range it works in. I am going to be extra careful working with it.I was using Lil' Gun
The issue I had was the case was so large that the powder had plenty of room to move around. It's possible the powder was not in contact with the primer end of the case upon ignition.I heard that lil' gun is fussy stuff. I received a number of jugs of it with the big 300BO lot I bought. It seems like it has a very narrow range it works in. I am going to be extra careful working with it.
I had a spate of failures to ignite with Winchester WLR primers. Ever since then, I have avoided them.I found a chart that listed Winchester as just below Magnum primers.
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Rifle Primers
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