The L.C. Smith Collectors Association
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Re: 20 in 12 Pressure
Interesting data. I would have thought the pressure might be even lower because of the jump in space from the 20 gauge adapter to the 12 gauge barrel. I have the silver Gaugemates with an O-ring near the rim end. I'm assuming the O-ring is to center the insert and to prevent hot gasses from escaping to the breech, correct?? Thanks.