maxwell Posted August 16, 2021 Report Share Posted August 16, 2021 Hi, anyone have a hushpower 20 O/U, I am looking for the dimensions/size of the porting holes down the barrels, thank you. Quote Link to comment Share on other sites More sharing options...
sitsinhedges Posted August 22, 2021 Report Share Posted August 22, 2021 I've some old notes written down which say 6mm holes starting 400mm from breech, then one pair at 60mm then 30mm centres for the rest to a total of seven pairs. Hope that helps 👍 Quote Link to comment Share on other sites More sharing options...
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