Theoben breech block and barrel on a Supersport?

[look no hands]

Hi all,

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

[baldinio]

Sacrilege!!! What length barrel and calibre?

[TonyL]

Mmmm....really wouldn't know, Pete. I know you mention dimensions etc., but how do those stack up re barrel alignment to the TP and barrel pivot hole? Really not sure. Especially when you consider that the barrel is often a positive point of a BSA anyway.

[flyingfish]

Why? I remember plenty of folks fitting BSA barrels to Theoben rifles but never the other way round

[Shed tuner]

stop making up complicated sh!t

What problem do you want to solve ? unless it's "how to devalue a theoben barrel AND a BSA supersport at the same time", I'm pretty sure this is the wrong answer

[look no hands]

stop making up complicated sh!t

What problem do you want to solve ? unless it's "how to devalue a theoben barrel AND a BSA supersport at the same time", I'm pretty sure this is the wrong answer

I'm trying to give Nick G a melt down

[look no hands]

Sacrilege!!! What length barrel and calibre?

It's .177 and bloody short, so I'd say a Fenman.

[Shed tuner]

I'm trying to give Nick G a melt down

Nah, he's too calm.. he'll just laugh

Just sell the fenman barrel, should go for at least £70, likely more..

[baldinio]

It's .177 and bloody short, so I'd say a Fenman.

I may need to speak to you about that at the weekend then 😎

[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]

I may need to speak to you about that at the weekend then 😎

It will need a proper reblue as it's satin black, I think the guy I got it off did it himself.

[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.

[look no hands]

Why? I remember plenty of folks fitting BSA barrels to Theoben rifles but never the other way round

Everybody seems to slate the BSA set up saying they should use a proper breech block like HW do.

Even Gamo use a proper breech block and they own BSA.

[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.