TexasCHLforum.com

Of course you can do it. Heck, lots of people use small rifle primers for .38 Super. The question is "should you" and do you know what will happen?
However, it will degrade accuracy and can raise instantaneous pressures. I have never wanted to do it and actually took back some CCI magnum SP primers I bought about 6 months ago, although I had no others primers to use.