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sv45

2011 sight block limited

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What recoil spring rates are needed for 2011 sight block guns?  Is there any difference to a standard 5” gun.  The reason I ask is I’m having one built and I handled one at the range and the owner said he runs a seven pound spring in a .40 Caliber.  That seems really light.

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8 or 9 lbs Wolff variable in my 40 ( using a 40 TruBor blank unported, which make the bbl 61/4 ")

All my other 40's without the bbl weight/sight block I run 11-13lbs springs in.

Edited by jcc7x7

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