Help understanding how this airgun valve works
Posted by inserttext1@reddit | GunnitRust | View on Reddit | 4 comments
Hello everyone, I've tinkered with airguns for a while now, and I think I'm ready to do my first from scratch airgun project and I want to tackle a personal gripe I have and that's a lack or good cool air shotguns. I found this awesome break action double barrel, barrel reserve airgun, and I'm struggling to understand how that combo works. I've worked with barrel reserve systems before so I get that aspect but the break part is confusing me. Any help would be appreciated
Makerplumber@reddit
have you tried the Seneca double claw? double barrel 50cal smooth bore, shoots slugs, or bird shoot capsules, even arrows. 250bar compressed air. even beautiful
inserttext1@reddit (OP)
Yeah and it's a pretty good roost gun, but like mksg are shotguns it'd not great at on the wing shooting. Not enough fps.
Makerplumber@reddit
luckily for me the Partridge around here always make that little noise saying hey mo fo i'm over here but I'm getting ready to take off. Every time I get just the right amount of time to swing and shoot. So it's not to often I'd need to take one out of the air, But I can see your point, the shot seems very under powered at any distance, I've thought about trying to incorporate a shotgun wad into their capsules in a attempt to hold the shot together further. But like everything else always have the time to think about it but never the time to do it. I'd be really interested in seeing what you come up with. I did see something about a 72cal shotgun on youtube today, it was just playing in the background and I didn't catch the name, but 72cal sounds intriguing.
jacksmachiningreveng@reddit
Fascinating design, but it does not suit your design objectives. The reservoir is around the barrel so air capacity is limited and the 7mm caliber is also too small.
Shotguns are inefficient in the sense that the power normally carried by a single projectile is divided among several smaller ones. If you're shooting something on the wing, it's assumed that most subprojectiles will not strike the target, therefore most of the power will be wasted, and you compensate for this by upping the energy.
I have a Philippine Farco 0.51" air shotgun and I had done some testing with it, 8 x 0.177" steel BBs at 50 feet fired at a soda can taped to a 1/4" particle board, they patterned nicely in a 1 foot square and did not lack power, punching straight through the backing but the can was untouched. Same target at the same range with 30 x #4 shot (about 1/8" diameter) resulting in a similar spread and only three hits on the can, that's ten percent of the total shot.
The point is that you need a relatively big bore, large reservoir and a fast high flow valve, and trying to fit that in the envelope of a powder-burning shotgun is not feasible. I would go for something along the lines of the AirForce Condor in terms of configuration because those inline valves are excellent for power.