B2-255 LEATHER BREACH SEAL QUESTION NEED IMPUT

[howie1a]

i JUST GOT MY B2-255 IT LOOKS REAL GOOD FOR THE PRICE , THE HELP I NEED IS HAS ANYONE REPLACED THE LEATHER BREACH SEAL WITH AN ( O ) RING IS IT MACHINED OUT TO TAKE A  ( O ) RING WHEN YOU DIG OUT THE LEATHER SEAL?HAS ANYONE PULLED THE LEATHER SEAL OUT I DON'T WANT TO REMOVE THE LEATHER SEAL AND FIND OUT THE THING WAS JUST GLUED TO THE BREACH THANKS HOWIE

[D Miller]

It is not glued to the breech. It is actually grooved pretty deep I might add. I replaced it with a synthetic seal on mine but later replaced it again with leather after squaring up the breech area because of barrel droop. I used a seal out of the B3 kit it is a little lareger diameter but can be knocked in and trimmed to fit. Hope that helps?

[howie1a]

I WAS THINKING OF (O ) RINGS DO YOU THINK THEY COULD BE STACKED IS THE GROOVE DEEP ENOUGHT? THANKS HOWIE

[D Miller]

You would have the stack 3-5 of those things in there to build it up and I don't know how you would get them to stay in place after that. There is no "lip" to hold them in place it is just straight. I got a kit with leather seals for mine from South Summit "not the one for the B3" YOU HAVE TO SPECIFY THE ONE FOR THE B-2. First time around they sent me the wrong kit and let me keep the B-3 kit and mailed me the right one. If you've gotta have synthetic seals you'll have to invent something but for me the leather worked out better on this particular gun. Best of luck!

[dank]

I've done the tissue test on the breach and found bo leaking so I'm happy with my leather.

Hey Howie.  I did some overly long and boring tune articles on the B2-245 (same gun in 177)  several months ago that covered the breach seal removal and installation.  Do a search on ChineseGate for Cheap Seats.  Lots of information there on the B2's (including a simple adjustable trigger).  Be sure to check the transfer port in the breach block.  It often has a ridge left from the manufactruing process that can ruin the breach seal.  I use as sharp 3/8" drill bit in a cordless drill to just remove the ridge and give about a 1/32" chamfer.  Go slow and use very light pressure as the port acts as a pilot hole and the bit can really dig in - possibly ruining the breach block.  

The B2-245/255 are some of the last remaining bargains out there.  I particularly like the 177 for backyard plinking - good looking, easy to cock and shoot and suprisingly accurate
(a simple recrown is sometimes required, but  3/8" groups are sometimes achievable at 10 meters rested).  Due to the limitations of the powerplant, the B2's will never be powerhouses...think of them as ersatz R-7s for the budget conscious.

Good luck with yours

[D Miller]

Tom,

I've got mine pushing 643 fps with Gamo Hunters in .22. I chopped the barrel to 8 inches, spaced the Titan mainspring {special ordered 8 weeks), replaced seals, deburred, polished, etc. I've recrowned and added a Gamo plastic muzzle break and major trigger/sear debur, polish and moly as well as a little added weight (12 grams) to the piston. I also opened up the transfer port a few thousands of an inch and reblued the metal and true oiled the stock. As soon as I can get the deluxe stock from oversees without costing me $90 shipped I am going to have a sweet "one of a kind" light hunter. I read your articles as well as many european posts as they have access to some of the cool aftermarket parts for this gun (moderators and stocks). I also added some length (1 inch) to the stock with a Gamo recoil pad. I love my RWS 34 custom and other european made rifles but these leather seaed chinese guns are just som fun to tinker with. My next chinese project guns are going to be the 2 pistols from South Summit for use around the cactus this summer when the rats and field mice get on the move. We have many rattle snakes as a result of so many rodents and I think this combo might lead me to decreasing their food supply hopefully ridding me of the problem. I will get some pics posted soon of my B2 that has been alot of fun to work on. I did have to shim the scope because of the chopped barrel even though I did even up the breach and I plan on replacing the rear pin with a more heavy duty one. I checked my trigger pull with the old fish scale and it broke cleanly at between 4.5-5 lbs. Not so bad considering where it started at 11 lbs but the added spacing, weight and titan spring only give me so much to work with on the direct sear engagement. The leather seals were also all replaced with a special kit you can get from South Summit (have to specify the B2 not B3) for $8. I love these cheap guns!

[howie1a]

Hi Tom I downloaded your article on the b2 it is very help full one of the things you put into the article was about how to adjust the AO have you ever tried to lock tight the lock ring the last ring on the scope to the part it threads to if you were to locktight them together  they would move as one unit making your scope a AO adjustable scope for next to nothing ( did I say Cheep )  Maybe I'll try I've got a 3x9 with a broken adj. knob it's good to mess with I only kept it to take apart and see how it was put together. When  my son was little I used to bring him broken edger motors so he could take them apart and see how stuff works he's a very good mechanic  even tho he works as a machinist on C&C laths est. If someone put it together you can take it apart and usealy  make it better.

[shadow]

It doesn't get any better then taking a CHINA plinker and giving her a overhaul inside and out, my tuned B3.177 Sniper. She pushes 700+ and has dropped her share of varment's. };) Ed

Hi Howie.  Yea, I crazy glued mine (Cheapy Walmart Powereline $28.00 and change) and it workd great.  Probably forgot to include that in the Cheap Seats.  

Glad the posts were of some use.

I really love the B2-245/255's from South Summit.  I've done several and give them to friends to get them hooked on airgunning.  Had one Tech-Force version and it was the worst of the lot - took a whole lot of work to get it suitable just to give away.  

Amazing what you can do with some bargain guns and scopes.  I am also amazed that they can manufacturer, warehouse, ship from china, wholesale  and then retail  something for the price.  You couldn't send the empty box back to China for that.  Don't know how Cummins does it either, heck it costs more than half the price of a B-3 to have it shipped a couple of states away.  Go figure.

Saw your Fast Deer on the forum.  Nice job.  I redid the stock on mine also - modeled it after the Winchester 70 (a classic in my opinion).  Refined the butt stock, pistol grip and tapered and rounded the fore-end.  Also included the same adjustable trigger as on the B2,  shortened the trigger a bit and cut down the cathedral sized trigger guard to a more normal dimension.  Really refines the look, although there is a certain charm to the original that grows on you after a while.

All in all a whole lot of fun for not a lot of bucks.

Tom

Hey D. Miller.  Good show.  Thats hard hitting for a B-2 in 22.  I am continually surprised how good talented forum members can make these bargain guns.  My hat's off to you.

I never seem to tire of trying to make a silk purse out of a sow's ear, even if my high dollar buddy's liken it to "putting lipstick on a pig".  Great fun when you can equal or outshoot them and their expensive rigs with your Chinese specials.

Good luck with the pistols.  They have gotten a bad rap over the years, but lately, several owners have posted great results with tunning them.

 I liken these bargain Chinese air guns to preassembled kits.  All of the parts are there, you just need take them apart (with rare exceptions), do a little cleanup and refinement (or modification) and reassemble  -  hey presto - decent to really good shooters.  Heck, even the owners of fine German guns send them off to have them tunned by the professionals and rave about how much better they Shoot.

Keep up the good work.

Tom

[howie1a]

Hi Tom I just came out of the shop after epoxying the junk scope I used for this trial it works great you can take a scope and make a AO for free just by glueing the lock ting to the adjustment ring, Cool You just need to be carefull that you have it adjusted right could be bad if you glued it up and found out you can't move it the way it needs to go. I really like my Deer it is a real tack driver you can put pellet after pellet on top of each orther. I hope the B2 will end up as good. I thought about shorting the barrel and making it a carbine like my deer I think the shorter barrel is more accurate maybe it cuts down drag. Right now I've got about a tin of Daisy pellets through it and it is starting to settel down still likes to through one wild every so often I hope that stops when it's broke in , but I've allready done a tune honed the chaber and polished the sear and the sear slot on the piston the trigger needs time to get better it will just need to ware lap till it's better I did a re crown on both ends and did you see the pics I put in and hoe I worked out the leather breach seal to a o ring  I also did the tissue test seals fine. I don't know if the B2's you got were as nice as this one and the one I got for my son they both lock up nice and tight a nice solid sound when you close the breach and no rattles , One of the things I thought I was getting on this rifle was a safty but maybe the barrel lock is what they call a safety but thats ok I can live with that it is possiable to make a safety  like the fase deer has not to big a deal.Thanks for the instructions Howie