Magnum primer for H110?

[abcollector]

Is a magnum (pistol) primer needed for igniting H110 in .44 Magnum (or even .357 mag)? Reason I ask is I fired three shot groups out of a B92 and the receiver/barrel was pretty warm. Granted, I was in the hot sun and so was the rifle but I thought I'd ask you'lls opinion. There was no excessive pressure signs but it was toastie in the sun.

Thanks

[BigSky56]

Yes H110 and W296 are listed with mag primers in all my load manuals no matter the caliber. danny

[abcollector]

Thanks Danny. I need to find some shade....

[Old Time Hunter]

I've never used noth'n but CCI large pistol primers and have not had an issue.

[TedH]

I loaded up some 44's a while back with some standard primers and some magnum primers with H110. I shot them off sandbags and through the chrony. I couldn't tell much difference in accuracy, but the velocity was more uniform with the magnum primers. Which seems to me would be affecting accuracy at longer ranges.

[COSteve]

I did a comparison test between some Win SP primers I use in my AR, some CCI SPM primers I've tried in my 357mag loads, and the Wolf SRM primers I've tried in my 357mag and 30 Carbine loads. I tested all three in each of my Rossi leverguns using the same charge wt and bullet over my chrono. What I found was that both magnum primers did much better than the Win SP primer which had poor velocities and large variations in ES and SD. While both magnum primers worked well, the Wolf SRM primers gave me a bit smaller ES and SD than the CCIs did.

I tried them because of a conversation I had last year with CCI. I called and talked to a tech rep in their primer dept who'd been there for 37years and I asked her (yep, a reloader and shooter too) if she could tell me the difference in cup thickness, primer charge wt, and primer compound between their SPM (550) and SR (400) primers. I explained that I currently had 8 different primer types/brands and wanted to consolidate.

After looking for a few minutes, she told me that all three were the same in both. So I asked her what was the difference between the two and she said, " You know, I use to buy all the different types of primers for my reloading but I got so I was always out of whatever I needed at the time. Anyway, I've settled on SRM (450) primers for all my small primer loads notwithstanding if they are rifle or pistol."

I found that interesting and to tell the truth, I'm now using my Wolf SRM primers in both my hot 38spl+P and 357mag loads I've developed using H110. The CCIs are now going back to the 30 Carbine loads which is what I originally bought them for.

[BenT]

Always used Winchester LP primers in my 45 colt with H110 . Last year ran out and all I could find was standard LP CCI 's. It took only 7 shots before I didn't have a powder detonation and had a bullet lodged about an inch into my barrel. That's when learned that Winchester large pistol primers is also their magunum primer , that is why I never had a problem with the Winchesters. I would stick with magnum primers.

[piller]

On the box for the WLP primers they do state that they are for regular or magnum loads. I have used them with H110/W296 and had good results. CCI 350 primers also gave good results. I don't see the need to experiment further because as I have been told, don't mess with success.

[1886]

CCI mag. pistol primers are to be preferred. 1886.

[abcollector]

A lot of interesting replies... thanks men, especially your response COSteve. I'm going to have to ponder these responses for a bit and see if I am more confused. Right now I'm overheated and it ain't even summer yet. Can we get a drenched smilie with sweat dripping off the eyebrow?

[Saltcreek]

In warmer weather you can get away with using standard primers with H-110 and ww=296 although with sometimes inconsistant ignition. However, in very cold weather, especially deep winter and far north, standard primers can give delayed or weak ignition. H-110 and ww-296 are definetly Magnum primer powders.

[1886]

In addition to CCI mag. pistol primers, H-110/296 likes about 10% compression and lots of neck tension. An expander .005" smaller than your projectile will be optimum. A healthy but not excessive crimp will also be warranted. 1886.

[COSteve]

In addition to CCI mag. pistol primers, H-110/296 likes about 10% compression and looks of neck tension. An expander .005" smaller than your projectile will be optimum. A healthy but not excessive crimp will also be warranted. 1886.

+1

That's how I get the velocity up and the SD and ES down. H110 doesn't like to be loaded lightly at all.

[1886]

My feeble brain intended for my fingers to type lots of neck tension not looks of neck tension. 1886.

[Old Time Hunter]

My feeble brain intended for my fingers to type lots of neck tension not looks of neck tension. 1886.

Too late, we all noticed it...

[COSteve]

Deleted