WeaponSF

It's kinda complicated and you can easily damage your barrel beyond repair. Find a good gunsmith you can completely trust but better forget about it. IMHO problem is not here. Damage the barrel beyond repaid, EASILY? How? I do have vertical mill etc. in my metalworking shop so I have the equipment to do a simple drilling of few holes to relatively easy material, and I can make the tools to pull the gas port -assembly off. I'd propably drill a new hole to the center of the existing circle-pattern of 5 holes, anyway. What other possibilities are there still left, I wonder..

So, now I have fired the VEPR 12 for about 400 rounds. Summary: With 12/70 24g trap/sheet shots it doesn't work semiauto at all. With 12/67.5 28g slugs it doesn't work semiauto at all. Very good accuracy though. With 12/70 32g 2.4-3.0mm rounds it does occasionally work semiauto. With 12/70 36g 3.0mm rounds it kinda works, 0-4 faults per magazine. With 12/76 50g 4.0mm rounds it works. I got a couple of faults because the rounds got jammed to the magazine and the magazine didn't feed them properly - some rounds seem to have slightly too big diameter. It is not too encourag

Just normal trap shots, not anything special. I don't know the weight of the lead in the shots. Thanks for a hypothesis! I'll try it again next weekend with other shells, and will know more. I'm in Europe.

It's not possible to check it easily, as one can't see the gas holes of the barrel. There is a drilled hole pointing downwards at the end of the gas-port, and that's all one can easily see, without removing the whole gas-port-assembly, or using boroscope to see through the holes from the barrel - and I don't have a boroscope. It is a new gun, so I'm not going to alter it. I just want to know if it SHOULD work with 12/70 trap shots or not, and if it should, then it will have warranty for fixing it. If not, I can live with using heavier 12x76 shots. Like this cross-section, P is

They are available in Europe.

I just got my new VEPR 12 and fired it for the first time today. I found out that it totally does not work semiauto with 12x70 trap shots. It does not have enough power to move the slide back enough to even extract the fired shell - sometimes it did move back enough that it jammed the fired shell between the lock and body, most of the time not enough to even try to extract the fired shell. As well, it does not have adjustable gas port, so there is nothing else to do but to use powerfull enough shots. I really expected it to have adjustable gas port, like saiga 12, so this was