View Thread: Reaming/ honing question


fpasuncion
I need some input.
I'm getting ready to press in my barrel.
My barrel measures .908" in diam.
The barrel opening on the front end of my milled receiver measures .899"
From what I've read in other threads and forums, It's recommended to have the opening on the front trunnion no more than .001" smaller than the barrel diam. or else it could crack the trunnion..or in my case the receiver. I don't want to take any chances since this is a milled receiver.
I need to open up the barrel opening from the .899" to .907" which is .008".
What's the best tool to remove that little of material and remove it evenly?
Would a cylinder hone work? Would a reamer be overkill?

bohnscot
I need some input.
I'm getting ready to press in my barrel.
My barrel measures .908" in diam.
The barrel opening on the front end of my milled receiver measures .899"
From what I've read in other threads and forums, It's recommended to have the opening on the front trunnion no more than .001" smaller than the barrel diam. or else it could crack the trunnion..or in my case the receiver. I don't want to take any chances since this is a milled receiver.
I need to open up the barrel opening from the .899" to .907" which is .008".
What's the best tool to remove that little of material and remove it evenly?
Would a cylinder hone work? Would a reamer be overkill?
the most desired method is to lathe the excess from the barrel. but i dont see any reason a cyl. hone wont do the job. provided it can cut the treated metal.
.907 seems large for the barrel. have you checked all the way around to make sure it is concentric?

allesennogwat
If you really want to hone the receiver instead of turning down the barrel you may be able to use a drum brake wheel cylinder honing tool from an automotive tool store.

loner42
.008 is alot to remove with a hone, and it would be hard to maintain a uniform dia. without any taper.
I would opt for boring it on a mill, but before doing anything be absolutely sure of your measurements.
What did you use to measure the trunnion bore with and the dia of the barrel ?