I have to play devils advocate here. Much is said about pistol primers not designed to handle high pressure. However, the old standby magnums, the 357 and the 44, are designed to handle at least 38,000 of pressure, or about the same as the 30-30 class of rifles, as well as the big Marlin levers.
In the 44 magnum, I interchange all the loaded ammunition between the revolvers and the Marlin 44 rifle. I use large pistol for all of it.
Should I seperate out the same loadings, use pistol primers if they are to be shot in a revolver and rifle primers if I shoot them in the Marlin?
It just happens that some of my most accurate, mid power loads, in the 45-70 Marlin have been with pistol primers. Not saying the pistol primers are more accurate, just saying that's the way it has happened.
By looking at a fired primer in the case, it is impossible to tell if it was a rifle, or pistol primer.