Lengthen shotgun forcing cone

[Euler]

In yesterday's ASP Extra, John Correia sings the praises of his Vang Comp 870, which is mostly a Remington 870 with a custom barrel which includes a longer forcing cone. (Vang Comp will do the same for Mossberg 500/590 shotguns, too.) Supposedly the longer (shallower) forcing cone decreases felt recoil and pattern spread. I'm skeptical and wondering what others think.

 

The internal ballistic argument is that pellets bouncing off the cone are deformed less if the cone is shallow vs. steep; and pellets that are deformed less spread less. I'm disinclined to believe that shot in a shot cup is "bouncing off" the forcing cone all that much.

 

Some review sites claim a 10% improvement on the pattern. If it's that simple and effective, wouldn't every manufacturer do it at the factory? If 10% of the shot spreads less, wouldn't 10% of the shot have to "bounce off" the cone? Of maybe it would all just be deformed 10% less. How would that work with 00 buckshot, which only has 8 or 9 pellets, anyway? Or with birdshot (steel), which probably doesn't deform no matter how much you "bounce" it off anything?

[45Badger]

My 870 police with cylinder bore consistently puts 100% of pellets (00 Buck) inside a 12” circle at 25 yards. 75% pellets are inside of 8”.

 

At any reasonable distance around the house, it would seem to deliver a lot of bang for the buck.

 

 

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[luckydawg13]

My 870 police with cylinder bore consistently puts 100% of pellets (00 Buck) inside a 12 circle at 25 yards. 75% pellets are inside of 8.

 

At any reasonable distance around the house, it would seem to deliver a lot of bang for the buck.

 

 

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so does my 870

[mikew]

My 870 police with cylinder bore consistently puts 100% of pellets (00 Buck) inside a 12” circle at 25 yards. 75% pellets are inside of 8”. At any reasonable distance around the house, it would seem to deliver a lot of bang for the buck. Sent from my iPhone using Tapatalk

This.

[Kingcreek]

My 870 police with cylinder bore consistently puts 100% of pellets (00 Buck) inside a 12” circle at 25 yards. 75% pellets are inside of 8”.

 

At any reasonable distance around the house, it would seem to deliver a lot of bang for the buck.

 

 

Sent from my iPhone using Tapatalk

Or....you could say it delivers a lot of buck (00) for the bang.

 

Most of the higher end sporting shotguns come with lengthened forcing cones now anyway. I believe it helps both patterns and felt recoil and I think a lot of trap and sporting clay shooters would agree. Patterning is pretty objective, felt recoil maybe less so.