Large Rifle Primers In Place Of Large Rifle Magnum Primers.

[arakboss]

Unfortunately I may have already bought some but what powders will not work well with large rifle primers in place of large rifle magnum primers? I have 25-06, 270 Win and 300 Win Mag as the largest capacity cartridges I would be using the magnum powders in.

Read More

 

[P7M13]

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.

 

[arakboss]

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.

I bought some H-1000 and Magpro, I am hoping the large rifle will work with those.

 

[P7M13]

Yer gonna find out.

 

[kmk1012]

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.

 

[Crazyeye24]

I load my 270 with large rifle primers and IMR4350....no issues.

 

[arakboss]

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.

That is surprising, do you remember what powder you used in those loads.

 

[2ndtimer]

I bought some H-1000 and Magpro, I am hoping the large rifle will work with those.

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.
Oh, and I also discovered that not all magnum primers are created equal. I have some Sellier & Belot large rifle magnum primers that gave hang fires in my son's .300 Win Mag Savage with H-1000. CCI-250's cured that. (FWIW, the S&B LRM primers have worked great in my .308 and .270 Win and I got a great deal on them )

 

[JuglansRegia]

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.

 

[arakboss]

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 found a chart that listed Winchester as just below Magnum primers.

Rifle Primers

www.trapshooters.com

 

[kmk1012]

That is surprising, do you remember what powder you used in those loads.

I was using Lil' Gun

 

[arakboss]

I was using Lil' Gun

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.

 

[kmk1012]

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.

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.

 

[P7M13]

I found a chart that listed Winchester as just below Magnum primers.


View attachment 1906316

Rifle Primers

www.trapshooters.com

I had a spate of failures to ignite with Winchester WLR primers. Ever since then, I have avoided them.
They have also had recalls because primer failure would scorch the bolt face and firing pin on rifles.

 

[JCMILLER58]

Listen to the latest podcast from Hornady. They talk to representatives from CCI, Remington and Federal and there is some good information on primers. When to use magnum primers versus standard primers. Pretty informative.

 

[Capn Jack]

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.

Interesting. The .458 SoCom uses large pistol primers. I use Remington large pistol exclusively and after several hundred rounds, developing loads with various powders, I have yet to have a primer failure.

 

[Capn Jack]

 

[arakboss]

This guy had pretty good results using a large rifle primer in place of a magnum primer. I didn't catch which powder he was using.

View: https://youtu.be/hvMMaN639_0?feature=shared

 

[40nascar]

I bought some H-1000 and Magpro, I am hoping the large rifle will work with those.

Those are pretty slow burning. I don't think LR will work consistently with those powders, if they work at all.

 

[arakboss]

Those are pretty slow burning. I don't think LR will work consistently with those powders, if they work at all.

I was thinking that myself but this morning I discovered that Western Load Data used a Winchester Large Rifle Primer for their 270 Win data, including Magpro loads.









And Hodgdon's site used a Winchester Large Rifle Primer for H-1000 loads.