would be fun if it was available for 20ga. (Corey 84)
would be fun if it was available for 20ga. (Corey 84)
Sub gauge inserts are quiet common...they are made for single shot or double barrel shotguns. I have used a 12g to 20g adapter and to me, it shoots just as good as a stand alone 20g shotgun!!!
The ones I used had an o-ring to hold tight into the chamber, had to manually pull out the empty 20g hauls tho.
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I feel like thats not a fair comparison though? Wouldn't the gases start blowing by the wad shortly after the forcing cone, negating the potential increase in velocity caused by a longer barrel? A bullet seals the bore until it exits, which allows the expanding gases to continue to accelerate the bullet until it reaches the end of the barrel but I didn't think shotgun wads seal nearly as well which would make a longer barrel mean less for velocity?
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....thinking about it, a 20ga---28ga adapter would be pretty sweet too!!
With the 12 ga load the pressure behind the wad is still pushing for the entire length of the barrel. 20" of acceleration gets more fps than 2" of acceleration.
But i'd expect the 410 wad fired in a 12 ga barrel would not receive that boost in velocity from a longer barrel. Blow by would be quite severe for a .40" wad in a .70" bore.
Last edited by jethunter; 07-26-2019 at 12:52 PM.
But it would be incrementally less as it traveled down the barrel.
A sub-gauge wad and cup with a large gap around it would not allow anywhere near the pressure a regular one would. In the case of a .410 insert in a 12 gauge barrel, there would literally be 1/8 of an inch. Laws of physics would dictate that the gas pressure behind the wad would seek and find the path of least resistance ( around the wad). So, unlike actual full barrel inserts like the ones made by Briley, these essentially are relying on a short amount of travel developing pressure, before essentially having the shot and wad bounce around for the remaining 20" worth of barrel.
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Do you have 20ga to 410?
by young lad has a 20 and recoil is a bit much at this age.
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An interesting test on the effects of barrel length. Doesn't really help here because their shortest barrel is a 20" and they aren't using chamber inserts but there is definitely some additional velocity with a longer barrel.
https://www.theboxotruth.com/barrel-...fect-velocity/
If these are still in stock next time I order from Frontier I'll definitely get one and try to remember to report back.
I'd love to get both a 20ga and 410cal adapter for my single shot. Any plans to bring in a 12ga to 20ga adapter?
"We don't take souls, we leave that to wives and girlfriends, but we can do a layaway " - Grumpy Wolverine.
If you need religion to have good morals then you don't actually have good morals.