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Old 28th February 2015, 06:22 PM
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john79 john79 is offline
Join Date: Aug 2012
Location: kettering
Posts: 272

I had one fitted to a mk2 rapid in .22 cal and at sub 12 it was usless but at 800+fps it was very good ,I think it was something to do with the slower twist rate affecting the performance at slower speed

atb john.
BSA GOLDSTAR SE 177-vortex viper pst
HW97K .177
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