I have 4 or 5 1990ish powder drops on various heads for my 550. I have read here that if I ask I can get the parts to update them to the new design at no to nominal cost. Every now and then the set screw loosens and I jammed one recently changing heads. I took it apart, put it back together and it works but I never did understand the cause. And I load .45-70, driving me to a softer powder to avoid over belling the case. If you have experience with both, what say you on upgrading this winter? Utility improvement for .45-70 (it is a very specific nuance with tall thin belling brass and cutting massive amounts of powder)? The threads on my drop rod (?) are also nearly stripped. When I change back to .45-70 I think I will need/want a new rod and I know they are different. Even the used stuff on e-bay has the newer powder drop so if you haven't seen what I have, you have the newer design.
Merry Christmas, and Thanks,
Jeff
Merry Christmas, and Thanks,
Jeff