Theoben breech block and barrel on a Supersport?

[maw1]

Hi Coddy is a mate of mine and the barrel fitted straight on just needed a slightly thicker breech seal

I read Coddy's comment on the Supersport history thread about him fitting a Theoben Sirocco barrel to a Supersport, not sure if he meant just the barrel or the whole breech block as well? I've emailed him because he's been banned but it's bounced back, now I just happen to have a spare Theoben breech block and barrel here and it is remarkably close in a lot of ways to the size and fixing points to the BSA set up, the only thing different is the width of the breech block which is 2mm thicker, so obviously won't fit in the Supersports breech fork, looking at it, I don't think milling a mm of each side could be done as I'd say the barrel wouldn't have enough metal left to hold it, so I would say the breech forks would need to be milled, is that possible to do?

Would it be a viable conversion?

Your thoughts please gents.

Cheers[/QUOTE]

[look no hands]

Hi Coddy is a mate of mine and the barrel fitted straight on just needed a slightly thicker breech seal

I read Coddy's comment on the Supersport history thread about him fitting a Theoben Sirocco barrel to a Supersport, not sure if he meant just the barrel or the whole breech block as well? I've emailed him because he's been banned but it's bounced back, now I just happen to have a spare Theoben breech block and barrel here and it is remarkably close in a lot of ways to the size and fixing points to the BSA set up, the only thing different is the width of the breech block which is 2mm thicker, so obviously won't fit in the Supersports breech fork, looking at it, I don't think milling a mm of each side could be done as I'd say the barrel wouldn't have enough metal left to hold it, so I would say the breech forks would need to be milled, is that possible to do?

Would it be a viable conversion?

Your thoughts please gents.

Cheers

[/QUOTE]

I wonder if like most Theoben things they where slightly thinner breech blocks on earlier models, the one I have is 17.5ish wide with a 16mm barrel girth, the Supersport barrel is 15.5mm wide, so the Theoben block needs to lose 2mm to fit in the breech forks.

Everything seems to line up with a BSA barrel block, even the BSA wedge lock fits in the Theoben block, the barrel pivot pin hole is smaller, so would need opening out to fit the BSA pivot bolt.

[MrGreengrass]

Nothing up with a BSA in the first place.Supersport barrel

[look no hands]

Nothing up with a BSA in the first place.Supersport barrel

I know, I'm just being inquisitive.

[Shed tuner]

Yeah, theoben did change their breach blocks. very early ones were different - narrower as you said - maybe that was when they were using wobley barrels ?