Conventional wisdom on primers when I was a student at a couple of gunsmithing schools was this:

Hardest primer cups was always CCI
Softest cups was always Federal
Winchester and REM fell in between

That when building comp revolvers you could back off on mainspring weight a few oz's for Federals so these were the go-to primers for most match play

Just as important was to insure your primers were completely seated in the primer pockets so that the primer wasn't being chased/pushed by the firing pin. The trick is full seat but never crush as this will disturb the primer anvil and affect performance. It's been years since I was in these schools so perhaps cup strength has changed but I don't think much. I talk with Gunsmiths Ron Power and Hamilton Bowen occasionally and they say this is still sound advice

Rick