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#1
05-19-2016, 02:13 PM
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20 221 ai 40
TAJ45; I have two 20-221 AI (40) ( Contender and L461 Sako) and the reason I did those (AI 40) was to stabilize the brass that seems to stretch, Too much trimming and used up cases.
To me that is where the value lies. Performance; I shoot the same load as before so I didn't see much speed change but I bet you could soup them up some. Please PM me if any specific questions. sgtg out 
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Linear Mode
