Will Theoben Rapid barrel fit on BSA Ultra?

[Rob Edge]

You would have to cut and machine them to fit. Be aware that longer barrels will likely result in FAC level power outputs.

[averageplinker]

Rapid parts command good prices. Given that they will need to be machined to fit you are probably better off buying plain barrel blanks to start with.

[Shed tuner]

Rapid parts command good prices. Given that they will need to be machined to fit you are probably better off buying plain barrel blanks to start with.

yup... much more cost effective.

[jirushi]

yup... much more cost effective.

Thanks for the advice gents.
I bought them in the Netherlands for about 88 pounds each. I think a bit cheaper than a LW blank but I'm not sure. I haven't got them yet so I can't compare them with my BSA barrels, but I've understood that the diameter at the breech end will have to be reduced from 15.8 mm to 15.5 mm. I hope that the hole which connects to the transfer port is in the right spot, and that the pellet accepting part of the barrel is right too. Will also have to make a .20 probe and pellet guide.

[Shed tuner]

Thanks for the advice gents.
I bought them in the Netherlands for about 88 pounds each. I think a bit cheaper than a LW blank but I'm not sure. I haven't got them yet so I can't compare them with my BSA barrels, but I've understood that the diameter at the breech end will have to be reduced from 15.8 mm to 15.5 mm. I hope that the hole which connects to the transfer port is in the right spot, and that the pellet accepting part of the barrel is right too. Will also have to make a .20 probe and pellet guide.

regardless of what you bought them for, you should be able to sell them for more that the cost of the LW blank - I'd guess around £100+ each. LW blanks were about £80 last time I ordered.

[Rapid7Nick]

Apart from the diameter being reduced. The rapid barrels will need the transfer port worked quite a bit, as the BSA transfer port is a totally different design that uses brass bobbin and seals. So the barrel will need a recess for this.
It maybe be easier to cut off the existing transfer port and start fresh again. Also upto about half an inch of the rifling of the barrel will need to be reamed out to accept the BSA probe and seal.

Can tomorrow take a picture of BSA and Rapid together to give you an idea of what will need to be done.

In fairness 24" rapid barrels fetch strong money, you could easily sell just one rapid barrel and still have change from purchasing a barrel blank.

[averageplinker]

It maybe be easier to cut off the existing transfer port and start fresh again. Also upto about half an inch of the rifling of the barrel will need to be reamed out to accept the BSA probe and seal.

Thud, thud, thud. That is the sound of amassed rapid fans fainting at the thought of those barrels being abused