My Invector chokes measure:
Cyl: -0.002"
Skeet: 0.006"
Imp. Cyl.: 0.006"
Mod. : 0.012"

The mod patterns as a full with the lead loads I'm using for pheasant and completely blows any factory steel load I've tried (which is all of them for the 16 gauge).

Want to start messing with subgauge loads, 7/8 & 3/4 oz to see what the deal is there. Lots of talk that you don't give up much in performance and many benefits from less recoil.

My Invector full measures 0.041" and with testing is damn near worthless for anything short of turkeys.

Thinking a brake hone and some extra time (which is short now with a basement remodel and 3 kids under the age of 6) is in order for making some custom bored Invector chokes. Buy a couple full chokes and make them the constrictions that I want and can test in my gun.