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Discussion Starter · #1 ·
MkIII inner band is 17.5 mm inside.
Assuming there is a difference in size (placement on the barrel) for a MkIII and a Mk1 band, the later being smaller.
What is the correct inner measurement for a MK1 inner barrel band?
Thank you!
 

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I can't help you with measurement, but yes, because the inner band for a Mk1 is in a different spot to the inner band on a MkIII, they are different sizes.
A couple of things to consider here.... Depending on what you are out to achieve.
The inner band does nothing in a rifle with a correctly fitting foreend. It was added, along with the barrel centering stud inside the nosecap, to minimise the effect of a warping foreend on the rifles accuracy in an attempt to reduce the need for rifles to go back for new foreends if the foreends warped a bit.
The inner band is tapered inside... You can confirm this by sliding it on a barrel one way, Mark how far it goes on, then turn it around and check it the other way.
As a suitable work around, you can use a MkIII inner band on a MkI simply be turning it around... If it is needed to "tame" a warped foreend, it will do the job, otherwise , as I said earlier, it does nothing anyway.

Would you like to expand on your situation, might be able to help with a solution....
 

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Discussion Starter · #3 ·
Thanks for that explanation Son.

This is a restoration project.

I now realize I have a MkI innerband. The PO forced it on the barrel to the MKIII position to fit in the MKIII forestock.
Had to put it in a vise (leather protected) to get it off. I understand these should easily slide into place.

So just need to get the correct MkIII inner band.

Thanks!
 

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Good stuff! Yes, the band is a loose fit on the barrel, so that if the barrel remains bedded properly, it should barely touch, if at all.

All MkIII inner bands have "III" on the bottom of the collar beside the screw hole.
 
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