Michael,
I have an 1881 lifter Parker with Twist barrels. Both have .030 constriction. I load a 1 1-4 oz load at about 1200 fps using IMR 4756 and nice shot. It is a little more expensive, but a viable option to shoot Kent Tungston Matrix 12 gauge shells inside of Gauge Mates. When I get to the computer I will post a picture.
Harry
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