large pistol magnum primers in rifles

[mickb]

Hi gents I know there are differences between rifle and pistol primers thickness, toughness and brisance but wondered how the above might go if I run out of large rifle primers. Referring to large pistol magnum primers btw, not just regular large pistol..

[Vince24]

Hi mate

I have used the Winchester 'Large Pistol primer for standard and magnum loads" (the blue box).
In the following loads

308W with BM2 and 150gr projectile in an Ishapore SMLE
303Br with 2206H and 150/158 grains projectiles in Lee No4 Mk1s.

ZERO incident
Accuracy was OK, those rifles were no Benchrest tools anyway but outcome was largely sufficient for my purpose (military style shooting).

[Oldbloke]

Hi gents I know there are differences between rifle and pistol primers thickness, toughness and brisance but wondered how the above might go if I run out of large rifle primers. Referring to large pistol magnum primers btw, not just regular large pistol..

Small pistol primers used in rifles often gets a mention......

Bottom line it pistol primers are designed for pistol pressures. (Lower than rifles)

For very mild loads.....probably ok. Normal loads could get risky. JM2c. But no personal experience.

IMHO, just buy some LRPs.

[mickb]

heavy revolver loads, single shot pistols, freedom arms etc can top 50kPSI , as can a rossi 92 incidentally, without detriment to LPP, so pressure wise Im thinking no probs with 30-30 or 444. Dimensional differences and firing pin piercing primers had me more concerned though.

Thanks for the report Vince24! Good to know

[Vince24]

you're welcome
my loads were 40g of BM2 for the Ishapore and 38g of 2206H for the 303.
so not on the heavy side for 150 grain projectiles.

But accuracy was not bad, this is a 10 shot group test at 100m with open sights with the Ishapore:

100m Speer 150gn 40g BM2, LPP.jpg (592.62 KiB) Viewed 523 times

[zbenga]

I use CCI large magnum pistol primers in my 45-70 for a specific load, sends 300grains Sierra hollow points to 3000 fps with no cratering or pressure signs, started testing with 350 grains and sends them to 2970 with no issues.
Not sure what the PSI is but I think for my use the shoulder will give way before there will be primer or pressure issues with the CCI large pistol magnum primers, they were cheap too

[Blr243]

This topic reminds me. I have a couple of packets of primes to giveaway if anyone local wants them. Large pistol cci