I sent my Sprinco Cor Bon unit back to Sprinco this morning. When I get it back it will have a heavier sub-spring installed specifically for 460 Rowland. I believe my next range trip will include my 20, 22 and 24# recoil springs to try with the Sprinco unit. The recoil spring they include doesn't have a rating but it doesn't feel very stiff. Probably a 17#, I dunno. I don't have a way to test the spring for weight.
But I have a suspicion that the Sprinco unit coupled with a heavier recoil spring will make 45 Super feel like 9MM. I'll keep my fingers crossed anyhow.
G2930SF (.460 Rowland), The 21 Club #7663, The 10 Ring #7663, The Bull Dawgs Club #???
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Amateur Glock Modification Expert...