Gil, from what I have read, so long as the loads are low pressure low velocity, under 7,000 psi. Cheddite, Noble, CCI 209,Win 209 and Rem 209 primers will not bring the loads above SAMMI specs. (I think it is SAMMI)

I read this more than once over on Shotgun World under reloading. Post the question over there, as there are a few that seem to know quite a lot about the different loads. (not that someone here won't know that also)

http://www.shotgunworld.com/bbs/index.php

David