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987654321
PostPosted: Fri Feb 02, 2018 1:49 pm 
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Posts: 156
So, tired of dealing with the constant lock-up issues on my break-barrel, I'm considering something drastic.

Anyone tried building an off-set scope mount onto the barrel? The scope would be about 6" further forward than normal, so I'd probably need to change/modify the stock into a shorter pistol grip.

I saw pics online where someone had done this, but can't find them now.

I've got a parts gun that I can cut the top of the receiver off of for the dovetail for the mount. Wish me luck! I'd appreciate any advice if anyone's gone this route.

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Daryl
PostPosted: Fri Feb 02, 2018 1:54 pm 
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Location: P.G. B.C.
Lightening the gun will increase scope stress. I do not know what a lock-up problem is that will or may be remedied by altering the scope mount to the barrel & shortening the stock.

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Anatine Duo
PostPosted: Sat Feb 03, 2018 5:35 pm 
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Posts: 33
Location: Muskoka
post503487.html?hilit=break%20barrel%20lock#p503487

No pics there (thanks to Photobucket)

There are some threads out there for putting a scout mount on a mosin nagant that might be useful. It involved screwing a rail to a piece of pipe and fixing the pipe around the barrel with glass bed.

For us I'd screw the dovetail to the bar, screw the bar to a pipe, slip the pipe over the barrel and epoxy. Poor mans cantilever scope mount. I guess if you are willing to cut up a grooved tube that will be even easier.

I still haven't gotten around to it but it's on my list.
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leadslinger
PostPosted: Sat Feb 03, 2018 5:47 pm 
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Location: Somewheres near the Atlantic
Anatine Duo wrote:
http://www.airgunforum.ca/forums/post503487.html?hilit=break%20barrel%20lock#p503487

No pics there (thanks to Photobucket)

There are some threads out there for putting a scout mount on a mosin nagant that might be useful. It involved screwing a rail to a piece of pipe and fixing the pipe around the barrel with glass bed.

For us I'd screw the dovetail to the bar, screw the bar to a pipe, slip the pipe over the barrel and epoxy. Poor mans cantilever scope mount. I guess if you are willing to cut up a grooved tube that will be even easier.

I still haven't gotten around to it but it's on my list.


The Jmeck mount like that. Just a rail with a band that clamps around the receiver.

You could do something like this. Clamp a couple to the barrel.
Image

But you will need to use a scout scope. Only issue with scout scopes is that the FOV is less at higher range. Most you will get is a 7x. scout scopes or pistol scopes allow 7 -9" of eye relief.

But if its a crosman should be 2 tapped holes under the barrel. That you can try and match the hole pattern with a weaver mount and screw it on. If the contour doesn't fit the best. place some sand paper and rub the mount over till it gets you a better contour.
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987654321
PostPosted: Sat Feb 03, 2018 8:18 pm 
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Posts: 156
I’ll post some pics up once the JB Weld sets. I had to put the non-PAL internals back in since it looks more like a pirate’s blunderbuss than any legal firearm.

Basically i mounted a dovetail rail (cut from a spare airgun) to the top of the breech block extending back about halfway down the receiver. Too far forward for a traditional scope/rifle, so I also cut the shoulder stock off behind the grip. I packed as much lead weight into what’s left of the synthetic stock as I could.

Should be a little awkward to shoot, at least it will be different!
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987654321
PostPosted: Sat Feb 03, 2018 8:25 pm 
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Attachment:
9864370E-EF98-4B64-87EA-DEC861317336.jpeg
9864370E-EF98-4B64-87EA-DEC861317336.jpeg [ 620.31 KiB | Viewed 1219 times ]

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Stoeger X3 .177, UTG 3-9x40 - 5.5 fpe
Crosman Shockwave NP .22, Hawke Airmax 4-12x40 - 16 fpe
Pumper Project .22, Centrepoint 4-16x40 - 13 fpe
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leadslinger
PostPosted: Sat Feb 03, 2018 8:27 pm 
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Location: Somewheres near the Atlantic
987654321 wrote:
I’ll post some pics up once the JB Weld sets. I had to put the non-PAL internals back in since it looks more like a pirate’s blunderbuss than any legal firearm.

Basically i mounted a dovetail rail (cut from a spare airgun) to the top of the breech block extending back about halfway down the receiver. Too far forward for a traditional scope/rifle, so I also cut the shoulder stock off behind the grip. I packed as much lead weight into what’s left of the synthetic stock as I could.

Should be a little awkward to shoot, at least it will be different!


You should have just put a scout or extended eye relief scope on. Would saved you from cutting the stock and still use it as a rifle. Than cutting it to try and use a standard eye relief scope.

You can never go back to that being a PAL rated airgun. Because it would be deemed a prohib. Cut barrel and cut stock.

Also if you want the JB to actually hold and not break first shot. You'll need more than a elastic band holding it, and the weight of the scope doesn't help either.
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TCooper
PostPosted: Sun Feb 04, 2018 12:34 am 
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Location: Ontario, Canada
You could also work on the lock-up problem. Shim barrel washers, stiffer plunger spring, fitted hinge bolt and bushing, moly paste, proper fitting breech seal. It's worth a try.
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Anatine Duo
PostPosted: Sun Feb 04, 2018 4:25 pm 
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Location: Muskoka
Looks kinda interesting. I'm imagining a giant over the shoulder holster... fun plinker if it holds together.

I had a glued on improvised mount fall off with the help of my 3 year old... just glued it again and good to go. That wasn't a springer though (150 ftlb pcp)
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987654321
PostPosted: Mon Feb 05, 2018 12:16 pm 
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Posts: 156
Update: JB Weld has held together so far (maybe 50 rounds?). More accurate than before, IF I'm shooting rested. Trying to shoot off-hand with no shoulder stock is not much fun.

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Stoeger X3 .177, UTG 3-9x40 - 5.5 fpe
Crosman Shockwave NP .22, Hawke Airmax 4-12x40 - 16 fpe
Pumper Project .22, Centrepoint 4-16x40 - 13 fpe
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Daryl
PostPosted: Mon Feb 05, 2018 12:32 pm 
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Location: P.G. B.C.
Guys trying the pistol-grip shotguns on our bear course, found out they were useless. Bear got them before they could hit it with slugs. Shoulders stocks were a must have feature for even semi-accurate standing shooting.

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Anatine Duo
PostPosted: Mon Feb 05, 2018 6:33 pm 
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Location: Muskoka
http://www.airgunrendezvous.com/rendezv ... tachment=1

not sure if this link will work...

Have you tried this position?
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Ace
PostPosted: Mon Feb 05, 2018 8:45 pm 
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Anatine Duo wrote:
http://www.airgunrendezvous.com/rendezvous/file.php?12,file=1222,in_body_attachment=1

not sure if this link will work...

Have you tried this position?

Permission denied: links to files in the forum are only allowed from the forum itself.

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Anatine Duo
PostPosted: Tue Feb 06, 2018 12:53 pm 
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Location: Muskoka
I tried to find another spot but failed. I saw Gary Barnes shooting a big long pistol with rifle scope by folding his arms. Fore end of the gun goes into the crook of your off arm.



https://www.google.ca/search?q=gary+bar ... KwY9oriyFM:
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Ace
PostPosted: Tue Feb 06, 2018 3:05 pm 
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do you mean this one...

Image

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