My 6mm is throated for 105 Hybrids. I have a .105 freebore. I would like to try 110 SMK's or 115 DTACs. My current freebore drives the bullet past neck shoulder junction at lands. I have a reamer with a .160 freebore. Can I run that reamer by hand on a barrel that has approx 600 rounds shot out of it?
Possible to re-ream a barrel??
- Thread starter GNCC407
- Start date
LA50SHOOTER
Sworn To Protect The Constitution.
The throat can be extended on your current chamber, BUT I wouldn’t necessarily use a Finisher chambering reamer to do so. I’d use a straight 6mm throating reamer to lengthen the throat to accommodate your longer bullets.
Dusty Stevens
Shiner
MatthewsCarbineCo
Home of the K.E.A.D.
how about a battery powered haborfreight drill? I heard they do have precision chinezium bearings? hahaha
I like the way you think ??
Dusty Stevens
Shiner
Thats what id like to have. Mine is a harbor freight plug-in 3/4” drill with the big handle off the side
hogpatrol
Gold $$ Contributor
Stan, Is that a set of feeler gages and a stop collar on the reamer?
You know it.LOL
Stan,
Could you post some borescope pics after your hand (reamer) job?
I've been thinking about a DIY one on a 22 Nosler to load a little longer.
Mostly get the "Don't do it" replies.
Contact angle on tangent bullets seems to be pretty close to the angle of the Leade.
Wouldn't take much to get just a little more length. Have a few .223 sized barrels I could use/practice on.
One question I have is the freebore diameter.
If I am a tenth or two small will that leave a bad step before the lands?
I can measure with pins, haven't cast yet.
Just how touchy is matching diameter?
Still collecting knowledge
Could you post some borescope pics after your hand (reamer) job?
I've been thinking about a DIY one on a 22 Nosler to load a little longer.
Mostly get the "Don't do it" replies.
Contact angle on tangent bullets seems to be pretty close to the angle of the Leade.
Wouldn't take much to get just a little more length. Have a few .223 sized barrels I could use/practice on.
One question I have is the freebore diameter.
If I am a tenth or two small will that leave a bad step before the lands?
I can measure with pins, haven't cast yet.
Just how touchy is matching diameter?
Still collecting knowledge
The whole purpose of going .005 at a time is to not tear the lead in your throat I would much rather do it in a lathe it's obvious the OP is wanting to do it buy hand just giving best option.P.S. I don't try an take pics of chambered barrels.Stan,
Could you post some borescope pics after your hand (reamer) job?
I've been thinking about a DIY one on a 22 Nosler to load a little longer.
Mostly get the "Don't do it" replies.
Contact angle on tangent bullets seems to be pretty close to the angle of the Leade.
Wouldn't take much to get just a little more length. Have a few .223 sized barrels I could use/practice on.
One question I have is the freebore diameter.
If I am a tenth or two small will that leave a bad step before the lands?
I can measure with pins, haven't cast yet.
Just how touchy is matching diameter?
Still collecting knowledge
Dusty Stevens
Shiner
Good tip for the old school type guys.
Liven The Dream
Gold $$ Contributor
Would love to see a reply to this Real Life Throating job .
The Throatier did not fit in my New Barrel ?
It fit my old Barrel .
I took the pilot off then it fit ??
What are the chances ?
Thanks
The Throatier did not fit in my New Barrel ?
It fit my old Barrel .
I took the pilot off then it fit ??
What are the chances ?
Thanks
Dusty Stevens
Shiner
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.
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.
Yes and very very carefully! Ask me how I know.
If you are going to try to change the throat length with a throat reamer by hand. use a fired case with a reamer diameter hole thru the base of the case usually 3/8. This will help to keep the reamer centered. Also use a stop collar on the reamer. Don't forget the cutting oil. Feed the reamer slowly as it will grab if you feed to fast.
To find the lands with the reamer, rotate the reamer slowly backwards while advancing into the chamber. When you contact the lands set your collar and proceed.
To find the lands with the reamer, rotate the reamer slowly backwards while advancing into the chamber. When you contact the lands set your collar and proceed.
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