Anyone have a shotgun forcing cone lengthened Or use vang comp (back boring) to reduce recoil?

And could someone explain how it would reduce recoil?

I have my own theory. The forcing cone lengthening process allows the gasses to slip by wad cups or gas seal due to a larger diameter until the cup gets to the correct gauge of the barrel that provides a good seal. Also reducing velocity.

Anyone have a Vang Comp gun that could chime in?

I had it lengthened on a Winchester Super X Model 1, semi auto. I didn't notice any difference.

I do know that many gunsmiths that work on shotguns say it is very effective in recoil reduction and it also improves the pattern of the shot. (less chance for deformed shot which happens easily with small shot pellets).

I know people who have had it done and swear it reduces recoil and improves the pattern. I find it hard to believe that a gunsmith is going to improve the engineering of the factory of a reputable manufacturer. Mainly because I don’t see any cost savings or benefits to the factory by making it in an inferior way.

This is one of those things where it’s really hard to say if it’s a legitimate claim or marketing hype. Recoil is felt differently by each individual. Some will feel no difference, some say they do.
It’s also hard to quantify an improvement in patterns. It can be different within the exact same box of shells, and then each brand, shot size, etc. will throw a different pattern.
A shotgun is generally an imprecise firearm. It’s hard to get repeatable precision when you’re throwing a cloud of shot out into the air.
I’m skeptical of the claims. If there’s any recoil reduction or pattern improvement it’s going to be small.

These modifications (lengthening forcing cones and back boring) do make a difference. I defer to Michael Orlen - a well-respected smith specializing in shotgun barrels - he lives fairly close and I have had him work on several barrels. In particular I picked up a police turn-in Remington 870 with a factory 18 1/2" slug barrel. I had him lengthen the forcing cone and backbore it and the results are pretty scary to see what it does with 00 buck compared with other guns - softball sized group at 50'. Jljones has seen me run it at an Opspec course years ago. Michael Orlen [Amherst, MA - google will find you what you need about him - he has no website] does most of his barrel work by mail and I recommend him for this work.

Magna Port has lengthened forcing cones for many years, process description and theory here:

https://www.magnaport.com/sgun.html

Pure SWAG but I think the smiths can make improvements because the optimize the barrel for a particular load/purpose.

At one time, I think manufacturers did more of this, before interchangeable chokes.

I know my father/a friend’s grandfather both had dedicated “turkey guns” etc.

quote:

Originally posted by sigspecops:
...
It’s also hard to quantify an improvement
...
A shotgun is generally an imprecise firearm.
...
It’s hard to get repeatable precision when you’re throwing a cloud of shot out into the air.
...

Those are bold claims. You're not a clays shooter. If you were you would know these points are patently false, and not by a little.

quote:

Originally posted by honestlou:
I know people who have had it done and swear it reduces recoil and improves the pattern. I find it hard to believe that a gunsmith is going to improve the engineering of the factory of a reputable manufacturer. Mainly because I don’t see any cost savings or benefits to the factory by making it in an inferior way.

WHAT??
This happens literally every day, across the whole spectrum of firearms (handgun, rifle, shotgun) in gunsmith shops across the country! I have several handguns, shotguns and rifles that gunsmiths have improved GREATLY over the factory original.


Edit to add: Next time I see Hans Vang at the range I’m going to ask him specifics about what barrel work he did. I just don’t know enough about shotgun barrel work. He sold his company and is retired now, enjoying shooting rimfires on a regular basis. My personal shotgun work involved stock mods not barrels.

quote:

Originally posted by KMitch200:

quote:

Originally posted by honestlou:
I know people who have had it done and swear it reduces recoil and improves the pattern. I find it hard to believe that a gunsmith is going to improve the engineering of the factory of a reputable manufacturer. Mainly because I don’t see any cost savings or benefits to the factory by making it in an inferior way.

WHAT??
This happens literally every day, across the whole spectrum of firearms (handgun, rifle, shotgun) in gunsmith shops across the country! I have several handguns, shotguns and rifles that gunsmiths have improved GREATLY over the factory original.


Edit to add: Next time I see Hans Vang at the range I’m going to ask him specifics about what barrel work he did. I just don’t know enough about shotgun barrel work. He sold his company and is retired now, enjoying shooting rimfires on a regular basis. My personal shotgun work involved stock mods not barrels.

I’m specifically addressing the forcing cone of a shotgun barrel. Obviously triggers can be improved and actions tuned to make them smoother and better. But if a different length or shaped forcing cone was better, then why wouldn’t the factory make them that way? Cost wouldn’t be any different, as opposed to tighter tolerances of better triggers and actions, which would cost more to produce.

Extra steps required.
The factory would have to change their way of thinking, (easier said than done for most), add tooling and steps then justify it to bean counters.
Established legacy factories don’t like to add cost to production & products. Especially if those products are already selling.
The vast majority of “average” shotgun buyers don’t care. Those that wish to refine a shotgun to pattern buckshot *much* better (as mentioned previously) are a minority compared to the mass number of pellet flingers.