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Replace chamber on a pistol?
 Moderated by: Poacher, DesertMarine
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 Posted: Thu Jan 19th, 2017 03:37 PM
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mikeingeorgia
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I have a pistol called Accu-Tek 380 Auto that has a chamber that seems to be too big in diameter. The rounds are too loose when they're in it, so when it's fired, the brass bulges and then won't really extract, and some will even crack because they're not supported well enough. I bought it used from a gun shop years ago, and it still had it's original box and paperwork in it, so I believed the previous owner took decent care of it. It appears that someone tried polishing the feed ramp, but not so well. I haven't actually fired it in a few years because of the issues it was having. The chamber is permanently attached to the frame, so it's not quite as simple as just replacing the barrel. Do you think it would be possible to have a replacement chamber made, then bore out the current chamber, and press a new, correctly sized chamber in it's place?



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 Posted: Thu Jan 19th, 2017 07:15 PM
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MapleHill
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Mike, I don't have a definitive answer for your question, but instead, another question. Is the pistol worth putting that kind of work in to it? It seems that would be labor intensive and quite pricey, I may be wrong.



 Posted: Thu Jan 19th, 2017 07:21 PM
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mikeingeorgia
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That's what I was thinking too. I only paid $150 for it when I bought it, but I don't know what something like that may cost, if it's even feasible.



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 Posted: Thu Jan 19th, 2017 08:24 PM
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ghrit



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mikeingeorgia wrote: That's what I was thinking too. I only paid $150 for it when I bought it, but I don't know what something like that may cost, if it's even feasible.It is feasible.  It is also prohibitively expensive, way more than the gun is worth.  The same techniques that are used to sleeve a barrel would be used, but since doing just the chamber would introduce another variable to the fit up, the process more than doubles the time.  Probably less expensive to fit a new barrel.

I get the feeling that the original owner tried to correct a feeding problem and went a bit overboard with the "polishing."



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 Posted: Thu Jan 19th, 2017 10:16 PM
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mikeingeorgia
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The way they made it, the barrel is pinned to the bottom of the chamber, so it can be easily removed, then the chamber is cast as part of the receiver. I probably won't bother anytime soon with it then. Maybe some liberal town will have a buyback program. I'd let it go for $200 lol.



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 Posted: Thu Jan 19th, 2017 11:59 PM
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ghrit



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Mike, I don't read the parts drawing that way. Looks like swapping out the barrel involves simply driving out that pin. Looks to me as tho' the chamber and barrel are all of a piece. Yes, there will be some fitting involved if you go with a new barrel ESPECIALLY with the feed ramp. Have a squint at this --
https://www.gunpartscorp.com/Manufacturers/Accu-Tek-33109/AT-380-34430.htm

And this -
https://www.gunpartscorp.com/Manufacturers/Accu-Tek-33109/AT-380-34430.htm


Then again, I've been known to blunder while squinting ---



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 Posted: Fri Jan 20th, 2017 12:13 AM
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Rockydog



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Mike, Did you ever try slipping a 9 x 18 (AKA Luger, Parabellum) in that barrel? Just thinking out loud. RD



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 Posted: Fri Jan 20th, 2017 01:10 AM
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mikeingeorgia
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Yes, but they are slightly too big in diameter. I need to take my barrel out of my PK-380 and compare the fit. The PK-380 is extremely smooth functioning so I'd be able to compare them with each other anyway.



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 Posted: Fri Jan 20th, 2017 01:14 AM
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mikeingeorgia
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Additionally, the firing pin would sometimes penetrate the primers. This was all from a batch of Winchester white box ammo. Do you think a bad batch of overcharged ammo could cause both problems or would they probably be separate issues?



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 Posted: Fri Jan 20th, 2017 03:07 AM
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cylinderman
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Not familiar with this pistol but if it is blow back with the barrel fixed in frame the barrel which includes the chamber is pressed into the frame then pinned. It can be removed and replaced that is if you can find a replacement. Your pierced primers I would look first to a firing pin problem. Possible dirty and gummed up or damaged. If it doesn't strike the primer firmly the primer can be blown through even with mild load.



 Posted: Fri Jan 20th, 2017 01:24 PM
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SavageShooter



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Looks like you can buy them still. Less than $300

http://www.accu-tekfirearms.com/at380ii.html



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 Posted: Fri Jan 20th, 2017 02:30 PM
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mikeingeorgia
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I think I'll contact them. We'll see if they will live up to their warranty.



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