What???you should use rifle load data for a rifle!!! A hot .357 in a pistol [ reload ] may/ could blow up a LONG barrel .357 rifle. Is your rifle rated for p+p ???? If not , I dont think I'd try it.... being I dont know for sure ,I'd check a reloading manual....
38 SPL+P has no difference from the standard 38 SPL, other than headstamp designation for load segregation. This is due to the fact that our standard case design will handle +P pressures with no problems.
Starline product description**
The 45 Auto+P is a strengthened version of the 45 Auto with the same external dimensions. A thicker web and heavier sidewall at base strengthens the case in potentially unsupported areas. This case has approximately 2 grains less internal water capacity than the standard 45 Auto.
Starline product description**
...but if they are too short, they will give you fits trying to chamber them from the magazine without jamming.So as you see, you are correct, any .38 Special or +P loads can be shot in a .357 Magnum chambered firearm.
That was not the OP's question. He was asking about shooting the .38 Special +P safely so that's what I answered....but if they are too short, they will give you fits trying to chamber them from the magazine without jamming.