Factory 357 Magnum ammunitions' primers

[BillBro]

Has anyone sorted through specialty ammunitions such as Underwood, Grizzly, Swift, Nosler, and so on? These companies that push the limit do not manufacture primers. An exaggeration of what I'm asking is 454 Casull factory pistol ammunition loaded with small rifle primers.

The 454 was designed originally to use large pistol I think, could have been large rifle but was later retooled to use small rifle primers so that is what it calls for.

 

[Naphtali]

My overall situation is favorably changed. The difficult trigger on one of our 357s is no more. Thanks to [different] thread on the web site, some slight "clean-up" on lock work, about 500 cycles with snap caps, and a different OEM hammer spring assembly, the SP101 has been transformed from painful and marginally accurate to a pleasant EDC.

Among easily obtained 158-grain JSP, ignition is reliable now with all three of our 357s. Point of impact at 10 yards is acceptable with any ammunition. Laurie will not use either of our 45 Colt Freedom Arms 97s. Her woods walking sidearm will be a four-inch SP101 with comfortable grip. Here is the crux of this thread. I bought 250 rounds of Grizzly 200-grain WFN - the most potent penetration load I could find. I'm kind've afraid to let her try it until she fires a couple of hundred more 158-grainers.

But if she cannot shoot the Grizzlies - that is, might become gun shy - which among factory 158-JSP ammunitions has slower expanding (but still some expansion) bullets with superior penetration? Shooting at paper targets with berm 30 yards away doesn't furnish anything helpful.