The cases wont be a problem. That is a myth that has been told and retold. I shot a Wasp for 40 years. Was a 1950FN action with a 28 inch Pfieffer barrel. I didn't baby it. I used the max listed loads from all the old manuals. I NEVER had a case head expand or primer pocket loosen. All case failures were via neck splits. About 4000 rounds total. This was with dominion brass and in later years some WW 25-35. Some chrono dope - 30gr 4895, 50 gr Speer -3755 fps. Same load with 52 sierra - 3725 fps. Those rimmed cases are very strong at the head, witness some wildcats on the 30-40 case. Unfortunately I don't have the rifle any more.
