From what I have read, the CCI small pistol magnum and the small rifle is the same exact primer. Small rifle magnum has a thicker cup, same as the small rifle bench rest and #41.CCI SRP work fine in my 1911, 2011 and factory striker glock.
In 9mm 124gr at 1080 fps, I cannot detect any velocity difference between SPP and SRP.
The only difference in primers is that I know a glock with springs that produce a lighter than factory trigger pull will occasionally fail to fire With SRPs.
Rosewood