“Shomtgun” – Testing the Pipe Shotgun

This article is a companion to the video on our channel.
The purpose of this is to expound on some elements covered in the video.

The uncensored video can be found on our BitChute Channel.

Shell Examination

Mini Shells

Note the seam running the length of the shells. This is from the weld bead inside the barrel
Pierced Primers. Concave Heads

2 3/4 Shells

The brass expands in a non uniform manner to conform to the barrel
Pierced primers. Convex on the edges and concave towards the center.

3 Inch Magnums

Similar expansion seen with previous shells. Notice how the rims are being deformed.
Primers completely removed. Light concave head.

Special Round

The special round was to test heavy projectiles. Firing a 1.75 oz aluminum rod this load partially ejected the primer.

3.5 Inch Magnum

These shells held up surprisingly well. The second from the left was the final round fired with the repaired striker

Examining damage to the parts

Barrel Bulge. Notice the cracks that formed as a result.
The bulge increased the pipe diameter to 1.201″
Excessive recoil caused the receiver to slide out of the retaining groove cut in the stock.

Notes On Testing

During the testing it is noted that all loads up 2-3/4 inch are valid. The reason that the larger loads (3, 3.5 inch magnums) were invalidated is because the striker mechanism was being ejected by excess gas in the receiver. This excess gas then vented out the striker hole instead of exiting through the barrel. Because the full pressure of the gas was not being applied to the barrel the results could not be considered conclusive.

After the first string of fire, a new striker was fitted to prevent it from being ejected by excess gas and so that the 3.5 inch shells could be validated. Unfortunately it was only able to fire once before it was damaged. This last shot was a 3.5 inch magnum with no bore obstruction, proving without a doubt that pipe shotguns are capable of handling such a round to no ill effect.

The last shell fired with the second striker. Note the split brass.

In total the gun we tested fired 14 rounds, survived two bore obstructions, and held up to the most powerful loads available on the commercial market.

Notes On Fabrication

Sch 40 3/4″ pipe

The barrel is a segment of Schedule 40 3/4″ pipe. Schedule is a measurement of wall thickness in pipe. The higher the schedule the thicker the walls become. The working theory is that pipe shotguns with a lower schedule are more resistant to high pressure loads because there’s more room in the bore, which makes it harder for pressure to build up as it can simply pass by the projectile. This is just a theory however and should not be taken as fact. Other than trimming one end of the barrel, this pipe is left in the exact same configuration as it came from the hardware store. The weld seam still runs the length of the bore and the threaded end is left unaltered at the muzzle.

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