Forcing Cone Work?

giarcpnw

Inactive
Anybody had their forcing cone enlongated on thier shotguns? This is part of the Vang comp system(he does this and backbores the chamber and porting) and I've seen other websites talk about it tightening up your groups. Anybody with real world experience? I've got a smooth bore 20inch barrel on my 500 so no chokes. I've found a couple gunsmiths that will do it for 60-80 bucks.

Thanks,

Craig
 
About half the 870 barrels here, maybe 5, have long cones. Some I had done, two LC barrels came from the factory with longer cones.

A cone job is similar in effect to one more degree of choke. Call it .005" equivalent. More importantly, less deformed pellets retain energy better. This means more moxie at the target.

As for reducing recoil, Roster says no. I can't feel any difference.

The first barrel I had done around 1978 or so. IIRC, it took 3-4 inches off patterns at 25 yards. Modern ammo runs tighter now, but some improvement is to be expected.
 
Basically what lengthining the forcing cone on a shotgun does is this:
It increases the distance from where the shell is to where it is constricted into the bore diameter.
The forcing cone of a shotgun is in effect a choke. You look at a manufacturers catalog and you see the new chokes are all lengthened as to smooth the actual constriction and do it more gradually as to improve pattern quality and maintain consistent shot strings and densities.
 
Basically what lengthining the forcing cone on a shotgun does is this:
It increases the distance from where the shell is to where it is constricted into the bore diameter.
The forcing cone of a shotgun is in effect a choke. You look at a manufacturers catalog and you see the new chokes are all lengthened as to smooth the actual constriction and do it more gradually as to improve pattern quality and maintain consistent shot strings and densities.
 
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