Change 1377 to .22 cal?

[SlowWalker]

Hi All,

Decided I want to fiddle a little with making a few mods to a 1377 that doesn't see much use. I've just received an 18" .22 cal barrel I want to put on it. Have a steel breech too. Anyway I seem to remember a post that said I would have to change the bolt so I could use the .22 barrel. Is that right? or are there other considerations?


Thanks!

[WyoMan]

Hi Steve, If your new barrel is a drop-in fit to the 13xx, then all you need is a .22 caliber bolt and some changes to your barrel band - drill/ream your barrel band to 7/16", or get the barrel band for a Crosman 2289, or a custom barrel band.

Wyo

[CraigH]

If you order a .22 caliber bolt from Crosman, add a .22 caliber seal too.   Some aftermarket vendors include the seal.

[SlowWalker]

Thanks for pointing me in the right direction.  I love this forum, the wealth of knowledge and the willingness to share and help newbies like me is amazing!

Again, Thanks!
Steve

[anti-squirrel]

IF you end up needing any more info, don't hesitate to ask.  Now when it comes to the probe for the bolt, the .177 uses a 004 O-ring, the .22 uses a 005 O-ring. 

And if you really wanna have a good time, get hold of a T-5 Torx bit.  An allen wrench works on the ultra-dinky breech screw, but unless you have a set of high end (precision machined) hex keys, the T-5 Torx bit fits more precisely.  A nifty thing about the longer steel breech is you can then drill a second barrel retention hole, thread it, and secure your barrel even better.