Since your blind mag is in the stock, you should have Centerfeed Guns. The Long Action Stocks should all have the same bolt spacing. The Short Action CF guns are 4.40 inches Center to Center on the bolts. The Older Stagger feed SA guns are 4.27 inches Center to Center. On both LA and SA if the stock is for SF then you will have to bed it in and trim the groove into the stock for the mag clip (near the rear action bolt/screw). On the SA stocks if you are retro-fitting a SF stock onto a CF gun, you will have put in the groove and also plug the front screw hole in the stock and redrill at the CF spacing.
Hope some of that helps and makes sense.
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