Anyone made their own crosman metal breach ?

[Shed tuner]

Yup serial is correct Mick.

Meanwhile, the breech is getting tantilisingly close: Milled the initial bolt slot, and it's very close - needs to go a bit further forwards as expected, and just opened out a fraction. Counterbored the small screw in the channel, trimmed the back and fitted the and plug, and kissed the ange off the front edge.



I also found out something interesting.. the old 1377 barrels need a fatter bolt that the modern 22xx barrels. The bolt that fits nicely into the modern 2240 barrel, and just seals tight with the probe clear of the transfer port, slides about 3/8" down into the 1377 barrel, sealing in front of the port, not behind ! I have a fatter bolt that fits better, but it still want to go a little past "optimal". Hopefully a slightly meatier o-ring will help, but it's already at the same OD as the bolt itself.

[--ped--]

the sliding breech cover breech's use a 5/16" probe and the barrel leade in is cut at a different angle
for ease fit a later barrel

[Shed tuner]

the sliding breech cover breech's use a 5/16" probe and the barrel leade in is cut at a different angle
for ease fit a later barrel

yeah that makes sense thanks. The donor pistol is the older sliding breech type, big hollow nose probe. I also have one of the magnetic probe bolts (old sliding breach style) spare for holding BBs in place But the holes are ddrilled for the sliding breech, so I guess the old sliding breech .177s used 1/4" bolts ?

I wanted to use this spare .177 barrel, but it's defo designed for the old 5/16" problem. I have a couple of spare blanks I could convert instead. Or just make a new bolt... least I don't need the "mill" for that - although it's damned handy as a very accurate drill press

However these other bolts I have are both small OD, but also have different nose profiles, resulting in different seating. So many variations...

EDIT and just found one of these "small OD" - around 1/4" - probes does seat quite nicely in the older type .177 barrel's lead in, ie without going past the port. Job done...

[Shed tuner]

Virtually finished.. I now have a working breech Just a few rough edges to smooth off (literally) and job done.

Would I do it again ? No.
Have a learned a lot ? Yup.
Was it rewarding ? Yup.
Are you sure you wouldn't do it again ? No !

[evert]

Now that looks really nice! So, you decided to keep it open sighted and not add a scope rail?

[Shed tuner]

Now that looks really nice! So, you decided to keep it open sighted and not add a scope rail?

Tks.. I kept my options open... I machined the full length flat on the rear section, as I may bolt on a brass dovetail section if needed. But for open sights, it's fine as is. At full arms length, my eyes are OK with opens. On a rifle however, eash.... different story.

how's yours progressing ?

[evert]

Tks.. I kept my options open... I machined the full length flat on the rear section, as I may bolt on a brass dovetail section if needed. But for open sights, it's fine as is. At full arms length, my eyes are OK with opens. On a rifle however, eash.... different story.

how's yours progressing ?

Need to modify the bolt front/probe to compensate for my previous sloppy work, and countersink the rear mounting screw hole.
And then add a rail.

[eyebull]

Great work Shed, need to get the brasso out though

[--ped--]

looks ok for a first attempt and yes they're a ballache to make on manual machines possibly milling the front the same as the rear would give it balance
these are in stainless and eventually i'll make frip frames for them so they're nearly all built from stainless ,one is by Grant Stace one by Rich Denning and the stubby i made -stainless is a real pain to work with
i have a breech for the 2260 and that was made by John Small

once you've don breech's trigger frames are next this is a billet ally one i made and anodised with olive ash grips i also made from timber i cut

hp locations near me

[Shed tuner]

yes, I was thinking of extending the flat to the front too.. but if I add the rail, it'll be fine as is. So I'll leave it until I decide, or it annoys me.

And nope, not even contemplating doing a trigger flame... as a few individuals have informed me, lathes are for turning, and there are better machines for milling

Never mind the machinery, your skills are clearly in a different league to mine too.. I'll stick to my specialist subject of spring gun tuning...

[evert]

Still needs a longer transfer port, and the probe needs to be trimmed to length for the correct seating depth of JSB's.
Other than that it needs a scope rail.
And I seriously need a proper mill if I'm ever going to do something like this again!

[Shed tuner]

Progress !. I see you went with the rounded loading tray... looks good.

I honestly don't think anyone would apprecaite what a pain these are to make unless they've tried it first hand !

[--ped--]

you've made a real nice job of that
the only way it's worth making one yourself is if what you want isn't already made or available

[evert]

you've made a real nice job of that
the only way it's worth making one yourself is if what you want isn't already made or available

Thanks- but there are some invisible flaws there that I'll keep to myself ;-)

It is worth it to make one if you have the spare time, just to have done it.
I'm considering to mill some flats on the sides for looks. But that can wait.

[--ped--]

Thanks- but there are some invisible flaws there that I'll keep to myself ;-)

It is worth it to make one if you have the spare time, just to have done it.
I'm considering to mill some flats on the sides for looks. But that can wait.

if your going to mill flats they look well if you do a small bi then a gap and a small bit these are my Stace guns and his breech's are the best you can get and just putting a small flat gives it elegance