Have 2 dillon 550s [given to me] and 2 T- magIIs. One Dillon is 45acp/AR only, the other is currently for 300Hamr , the 2 Lymans vary, one has been reloading my 45 Schofield-.455 and .45special from last weeks match. The second has .38 dies on it. I have multiple Dillon measures and quick connect gizmos on them so I can easily change dies and change measures and start cranking out loads. I prime on these press. Another thing is that I don’t switch primer arms, I leave the large primer one on all the time. They work fine with small primers.