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Joined: Feb 2005
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OP
Campfire Tracker
Joined: Feb 2005
Posts: 4,646 |
I'm looking at putting together a collection of bushings to ride inside the bore. I want to use these to indicate off of when dialing in the muzzle or a barrel that has been chambered in something smaller.
What sizes would I need for the common cals?
6mm = .2345" + .2350"
257 =
6.5mm =
7mm =
30 = .2995" + .3000"
338 =
358 = .3495" + .350"
Help me fill in the blanks or correct the info I have if it is wrong.
Some is Good---More is Better----Too Much is Just Right
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Joined: Dec 2004
Posts: 10,344
Campfire Outfitter
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Campfire Outfitter
Joined: Dec 2004
Posts: 10,344 |
Would that be loose in the common .237 bore of a 6mm?
6mm = .2345" + .2350"
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Joined: Feb 2005
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Campfire Tracker
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OP
Campfire Tracker
Joined: Feb 2005
Posts: 4,646 |
It might be, I thought the 6mm was .235". If .237" is the norm, I will use those #'s instead.
Some is Good---More is Better----Too Much is Just Right
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Joined: Oct 2009
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Campfire Tracker
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Campfire Tracker
Joined: Oct 2009
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Can't go wrong purchasing any one of these sets.
http://www.bullets.com/search?q=%28categoryid:778300%29+AND+%28brand:%22Pacific+Tool+%26+Gauge%22%29
I never thought I'd grow up to be a grumpy old man, but I did, and I'm killin' it.
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Joined: Feb 2005
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Campfire Tracker
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OP
Campfire Tracker
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It's just my brother in law owns a grind shop, and it's time for a little pay back.
Some is Good---More is Better----Too Much is Just Right
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Joined: Feb 2005
Posts: 4,646
Campfire Tracker
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OP
Campfire Tracker
Joined: Feb 2005
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OK, can anybody tell me where to find the info?
Some is Good---More is Better----Too Much is Just Right
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Joined: Dec 2007
Posts: 1,523
Campfire Regular
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Campfire Regular
Joined: Dec 2007
Posts: 1,523 |
The barrel makers usually spec their bore diameters. Try Kreiger's website. 6mm is either .236 or .237 bore depending on maker. No guarantee that they will all be that number to 0.00000" though. That is why reamer bushings come in .0001 or .0002" increments.
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Joined: Dec 2004
Posts: 10,344
Campfire Outfitter
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Campfire Outfitter
Joined: Dec 2004
Posts: 10,344 |
Kreiger and maybe Bartlein list either .236 or .237 bore. As stated, they are not exactly either size. That is why I have Deltronic pins for ea. caliber in .0001" increments. Figure most MFG. have the .237. My pins have a .237 nominal with 12 on ea. side in .0001 increments. That makes my .237set start at .2388-.2712.
You can get reamer bushings from the reamer mfgs.
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Joined: Feb 2005
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Campfire Tracker
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OP
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Thanx guys. I ll get the other sizes from their websites too.
Some is Good---More is Better----Too Much is Just Right
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