I want to enlarge the diameter of a Barnes TSX from .311 to .312".Has anyone enlarged the diameter of a jacketed bullet - or in this case a copper bullet - using liquid teflon, liquid enamel, or powder coating? I am thinking of dipping a bullet's shank into liquid paint and then baking it, or heating the bullet and dipping it in powder paint before baking it.
enlarging a Barnes TSX diameter with paint
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- Last Post 01 December 2021
No, but keep in mind this is the Cast Bullet Association forum, so the answer you want may not be here.
David Reiss - NRA Life Member & PSC Range Member Retired Police Firearms Instructor/Armorer
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Conventional jacketed bullets are pretty forgiving about diameter with slightly undersized bullets capable of good accuracy. Perhaps a Barnes copper bullet would work similarly. I don't know anything about painted or coated bullets and this may work in your situation, but you might try the Barnes as is for comparison.
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I shot with a man in California who paper-patched jacketed bullets to fit odd-sized bores. I do not know if you can paper-patch this thin for an added .001 total diameter.
The second possibility is to bump the bullet in a .313 or .314 die to allow for springback after bumping.
If the bullet is flat-base, it should bump up .001 as the bullet hits the leade before beginning rotation. This is how I've known I had an oversize bore when experimenting with a new rifle; the rifle would shoot flat-base well, but not boattail bullets.
Farm boy from Illinois, living in the magical Pacific Northwest
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Is there any reason that a jacketed bullet couldn't have it's diameter enlarged by .001 or .002" by powder coating just as cast bullets are?
John
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It's difficult to imagine a rifle barrel noticing a thou difference. A good example is many .303 Brits shoot just as well with bullets .310-.312 inch.
Cheers from New Zealand
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Jeff is right my Tikka shoots .224 bullets into under one inch groups with a barrel that slugs at .225. Just shoot it and see what happens.
John
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Thanks for your replies. I've tested the Barnes once along with Speer .311-150sp and Hornady .312sp. The Hornady test loads grouped better. I'm guessing it's the bullet diameter. I want a decent hunting bullet load for my rifle and CA only approved copper bullets. Unfortunate because I would prefer to hunt with a bullet I cast and used to assemble my hunting cartridge myself.
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You could use the new Rotometals lead free bullet casting alloy. It's been fixed with the addition of .75% antimony. Instructions and link to a forum thread explaining how to use it on the Rotometals product page. If you're really interested, message me.
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