great info Drew. Thanks! I promised I would take measurements on my other two Parkers...so here they are. 1. 12 gauge grade 1 lifter mfg. in 1877. RIGHT BARREL .130 WT at forcing cone. LEFT BARREL .128 WT at forcing cone. This gun has the largest wall thickness I have seen on a 12 gauge Parker with twist barrels. 2. 10 gauge grade 3 lifter RIGHT BARREL .096 WT at forcing cone. LEFT BARREL .090 WT at forcing cone. The left barrel has a slight .004 bulge at the forcing cone which is hard to see but it is there. Thanks for taking the time to measure your guns. Keep them coming!
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