At the time this gun was proofed 0.025" constriction would have been considered on the order of am IM choke. With today's plastic shotcup wads they will most likely run full as SkeetX said. One word of advice that is often quoted on this forum is try them for a while as is & if possible pattern them with some different loads before you jump in & modify them.


Miller/TN
I Didn't Say Everything I Said, Yogi Berra