Possible to re-ream a barrel??

[rgc54]

"I use a drill for better control."

Old fashion brace for auger bits. Set the ratchet so you can take half turn and then back up. Heard you can cut to a tenth all day long if you do your part.

You must have the rite "pills" to do your part.

 

[Roeder]

I can pin the bore with + and - pins. One is .2218+ the other .2219.
That range ought to be OK with a pilot?

The freebore of two of my barrels pins to .2245 with a PLUS gage.
It was done, according to the maker to .2245.
BUT
a .2245" reamer can be .2245 0/+0.004.
If it was 0.0002" LESS than what I have, would there be a step where it starts cutting, and would that matter?
If it cut 0.0002" over not a big deal.

The diametrical tolerance used by most reamer grinders is plus .0004, minus zero. If there is any erosion in the throat there may be a bit of a step or an area that does not clean up visible through the borescope. After break in it will probably not be noticeable and most likely will have no effect on how it shoots.

 

[Shawnba67]

Its a 6mm shoot it 100 more times and freebore will be right where you want!