Briley Spherical Bushing
- Thread starter mattk
- Start date
- Status
critter
Member
I bought a Para Ordnance P-14 (full size .45 auto) from a 'smith-his personal gun. It has a Briley spherical bushing in it. The concept sounds really good to me. Mine fits extremely well and functions perfectly. The gun is very accurate, partially I am sure, due to the Briley but assessing how much it contributes is impossible. I highly recommend them.
The ONLY negative I have ever heard is that in harsh (read dirty) conditions, they may bind up and tie up the gun IF 'crud' gets in the bushing. This is, of course, due to the tight tolerances and would apply to ANY bushing with tight tolerances.
The ONLY negative I have ever heard is that in harsh (read dirty) conditions, they may bind up and tie up the gun IF 'crud' gets in the bushing. This is, of course, due to the tight tolerances and would apply to ANY bushing with tight tolerances.
Jim Watson
Member
I have a Briley in one gun. It works fine. It went in easier than a solid bushing, but cost more. Total cost for parts and labor (by FLG, I am mechanically inept and would not dream of installing a fitted bushing.) was about the same either way. I had rather he get the money than Briley, so my next new bushing was a King's.
I don't know how much you will benefit with one as a dropin on a Mk IV. Note that your stock barrel flares at the muzzle to set up in the collet bushing. I don't know how close a fit you will get with a ring bushing right there at the muzzle. Do some measuring. Is there a straight section at the muzzle for the ring to support?
Ideally, you should have the barrel lathe turned straight and smooth, then pick a ring diameter .0005" larger (Briley says .0010" but that will feel sloppy. They only make rings in .0010" increments so you have to get the .0005" clearance by careful control of barrel diameter.) Don't put a sharp step in barrel diameter for bushing relief as called for in standard bushing fitting. It can be the same all the way, or have a tapered relief, but don't leave a corner for the ring to hang up on. I saw one that chipped the TiN coating and gouged the barrel up, probably from a sharp relief cut.
I don't know how much you will benefit with one as a dropin on a Mk IV. Note that your stock barrel flares at the muzzle to set up in the collet bushing. I don't know how close a fit you will get with a ring bushing right there at the muzzle. Do some measuring. Is there a straight section at the muzzle for the ring to support?
Ideally, you should have the barrel lathe turned straight and smooth, then pick a ring diameter .0005" larger (Briley says .0010" but that will feel sloppy. They only make rings in .0010" increments so you have to get the .0005" clearance by careful control of barrel diameter.) Don't put a sharp step in barrel diameter for bushing relief as called for in standard bushing fitting. It can be the same all the way, or have a tapered relief, but don't leave a corner for the ring to hang up on. I saw one that chipped the TiN coating and gouged the barrel up, probably from a sharp relief cut.
the briley is one of the major factors in the accuracy of smith's performance center autos
- Status
