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Old November 25, 1999, 08:10 AM   #7
Dave McC
Staff In Memoriam
 
Join Date: October 13, 1999
Location: Columbia, Md, USA
Posts: 8,811
The forcing cone is basically a funnel between the chamber and bore. By making the transition gradual, it keeps the pellets rounder and like someone said, the pressure spike is lower, so recoil abates slightly. Patterns are not tighter, but fuller, with less distorted pellets staying in the pattern.

Re backboring, this can drop recoil slightly also, but some smiths and owners have problems with reducing the amount of metal forming the bbl.

Lengthening the cone isn't complicated, Brownell's sells the tool,among others, and you're just reaming out a little from the funnel. But, knowing how much to take is the crux.

Haven't checked lately, but my guess is it'll cost around $50 per bbl.

I like the lengthened cone, but I must admit many shotguns live long happy lives w/o it....
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