One other thought. LP are shorter than LR. If you set it to the same depth-below-rim as LR, the firing pin blow will finish seating the primer, and you will probably get a misfire. I you seat it fully in the primer pocket, it might be so low that the firing pin doesn't hit it, and you get a misfire.
ALPO You're scaring me. For years I have been using large pistol primers in 375 Win. and 7x57 mauser, sometimes altering the primer pocket of some old 7x57. As a rule I always load 2 or 3 grains below the manuals suggested starting loads. I have never noticed any signs of excessive pressure, extraction difficulty or pierced primers. The 375 Win is the BB lever action, the mauser is the 98K and sometimes the bolt needs some pressure down to the right position a problem I think that the large pistol primers are a bit too long. My main concern is safety because if it is so dasngerous to use pistol primers in rifles I have to bury my guns due to the impossibility to find reloading components in the place where I live.
Small rifle primers work great when loading the .357 mag. I use them all the time in place of small pistol mag. primers....
Everyone is entitled to their opinions, but if you want to hear what an expert says, I'd say, take the time to get the proper components. It's not that difficult...
just in case you don't read fine print..... He's also the author of a few well known reloading manuals; so if you trust what he puts in the manuals, you may want to heed his advice.
I think it's irresponsible to spout off about KNOWN UNSAFE PRACTICES, it sets a very poor example for new reloaders. Yes, Fergie, this may work for you, I'm happy for you, just stay at least 100' away from where I'm shooting.
There are plenty of cross primer loads that will make an effective BOOM.... it's just russian roulette without load data and workups within a Proper environment.I read in a gun magazine years ago that Remington used small rifle primers in their .357 magnum factory loads. I have used them and they work fine. I know a few other people who use them also. This is the only cross primer load that I know of that works.
If a 460 S&W magnum revolver can handle 6000 psi then there's definitely nothing wrong with using them in a rifle. Some shooters actually prefer them due to the higher flash (depending on load). I would not hesitate to use them in a rifle until I exceeded 6,000 psi. They are virtually the same size but if you want to split hairs, get an adjustable hand primer tool.Are the pistol primers the same size as the rifle primers? I know there is a difference in the power of the primer, but can it be done?
Thanks in advance...