To clarify what I should have said was the bushing will travel the full length of bore until it reaches the chokes. Chokes are spot on with Skeet II at .012 and Improved Mod at .025 per inside dial caliper. I started with an 7" inside caliper but given the readings I was getting decided it wasn't accurate enough so I picked up a decent digital unit which is long enough to get past the chokes.

Last edited by HuskyPaul; 06/22/13 11:39 PM.