They work fine in cast bullet loads (think lower velocity,lower pressure). I certainly would not use them in high pressure loadings in a rifle.
i Used them Federal #155 with my HI Press 44 Mag handgun loads - 21.5 grs H110 with a 300 gr-er ! Shot them, in my M1894 Marly - All Good - Everything was FINE ! WHY you THINK there might be a Problem ? thxs RJ
You can sometimes get away with using small rifle primers in pistol loads as they're they same height.
Hope you stopped that practice.5 out of 20 would be piecred in my sks.