Hints on How-To - Please

[oldstarfire]

I need some constructive thinking (help!)

I'm making a monoblock for a SxS shotgun, double under bite.
It's all fitted, now just to cut the locking bolt slots in the underlugs.
But there is two lugs - if one slot is binding, and I overcut the other, oops!

So - is there a logical method of doing this, an "ancient gunmaker's secret"?
Hope this makes sense - thanks in advance.

[rolland]

If you don't have it then you need Ellis Brown's book http://www.bundukipublishing.com/doublerifle.htm
he goes into great detail on fitting monoblocks, I used both smoke and fit method and prussian blue on the bolt for the under lugs.
I am working on a .303 right now http://forums.nitroexpress.com/postl...Board=dblbuild just waiting on a chamber reamer to continue.

[DJones]

I need some constructive thinking (help!)

I'm making a monoblock for a SxS shotgun, double under bite.
It's all fitted, now just to cut the locking bolt slots in the underlugs.
But there is two lugs - if one slot is binding, and I overcut the other, oops!

So - is there a logical method of doing this, an "ancient gunmaker's secret"?
Hope this makes sense - thanks in advance.

I'll second the suggestion for Ellis Brown's book. It has a lot of very good information.

I'm not certain what your question is exactly. A little more detail, or better yet pictures, would be helpful. I have pictures of how I cut and fit a mono-block for an old "Jones Screw Grip" action, but the idea should be at least similar. If I can help in some way let me know.

At any rate, good luck with your project.

[oldstarfire]

I'll second the suggestion for Ellis Brown's book. It has a lot of very good information.

I'm not certain what your question is exactly. A little more detail, or better yet pictures, would be helpful. I have pictures of how I cut and fit a mono-block for an old "Jones Screw Grip" action, but the idea should be at least similar. If I can help in some way let me know.

At any rate, good luck with your project.

Thanks for the comments.
Filing the locking bolt slots properly in the two lugs is the problem, as I am not able to see which bolt half is binding when/as I file the slots.
I will go the blue-and-try way.
Will probably get the book as suggested.
Thanks again.