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Shooting & Reloading - Mausers, Big Bores and others >> Cast Bullets
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458Shooter
.224 member


Reged: 14/09/09
Posts: 47
Loc: Canada
Teflon Patched 45-70
      #244413 - 26/03/14 03:06 AM

I have been Teflon patching cast bullets for years with very good luck. Two wraps of Teflon works better and faster for me than patching with paper.
The best luck so far has been with gas checked .457 diameter cast bullets patched up to around .458,
this method works very well out of my 86 Winchester and the Marlin lever guns.

Edited by 458Shooter (26/03/14 09:47 AM)

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tinker
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Reged: 12/03/05
Posts: 4835
Loc: Nevada
Re: Teflon Patched 45-70 [Re: 458Shooter]
      #244418 - 26/03/14 05:28 AM

That's some thick teflon tape!

The stuff I have around here comes out to about .0002" thick.
Takes a lot of wrapping to get much diameter difference.

Have you ever recovered one from an animal?





Cheers
Tinker

--------------------
--Self-Appointed Colonel, DRSS--



"It IS a dangerous game, and so named for a reason, and you can't play from the keyboard. " --Some Old Texan...

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458Shooter
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Reged: 14/09/09
Posts: 47
Loc: Canada
Re: Teflon Patched 45-70 [Re: tinker]
      #244426 - 26/03/14 09:46 AM

The only 45-70 cast bullets I have recoverd were from shooting them straight into dirt, the Teflon still stays attached which is hard to believe.
I have recovered one from shooting through ridiculous amounts of railway ties, never one from game though.

Edited by Daryl_S (27/03/14 02:41 AM)

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aromakr
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Reged: 20/04/11
Posts: 849
Loc: Hamilton, Montana
Re: Teflon Patched 45-70 [Re: 458Shooter]
      #244461 - 27/03/14 01:08 AM

I make squib loads for my 9.3X74R using .357 158 gr keith type bullets, using Teflon tape bring them up to .368. In my double the regulate perfectly at 30-40 feet, there great for grouse.
Bob

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dracb
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Reged: 28/02/13
Posts: 133
Loc: British Columbia
Re: Teflon Patched 45-70 [Re: 458Shooter]
      #244493 - 27/03/14 04:28 PM

Soooo, what kind of tape are you using and where do you acquire it?

--------------------
"The problems we face today are there because the people who work for a living are now outnumbered by those who vote for a living."

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aromakr
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Reged: 20/04/11
Posts: 849
Loc: Hamilton, Montana
Re: Teflon Patched 45-70 [Re: dracb]
      #244507 - 28/03/14 01:16 AM

I use the tape designed for pipe threads, any hardware store carries it.
Bob

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DarylSModerator
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Reged: 10/08/05
Posts: 26998
Loc: Beautiful British Columbia, Ca...
Re: Teflon Patched 45-70 [Re: aromakr]
      #244514 - 28/03/14 03:50 AM

I just took a Lyman mould cast bullet from #457125 that measured .458", ran a couple wraps of "PTFE THREAD SEAL TAPE 12MMX0.075MM10M" around IT and re-measured the taped bullet at .462".

I unwrapped the bullet and repeated the wrapping - .462" again. I think the enlargement is due to the tendency of the tape to fold on the edges and with the overlapping to get the length also adds to the diameter over what the actual single layer thickness X 4 would give. Of course, this is different than with paper patching which gives results closer to actual measurement X4.
Regardless, it worked to increase the diameter and can be done on bullets that just a bit smaller than you'd like, to make them better fit your chamber's throat. This should increase accuracy, of course.

I recommend you tape the bullets down onto the ogive, so the rifling lands start to engrave down a bit from the end of the tape to prevent balling up of that edge as the bullet starts into the lands.

A single piece of my Teflon tape measured .0005" using my N.S.K. mic.
Times 4 + .0016" - YET - the bullets increased .002" per side.

--------------------
Daryl


"a gun without hammers is like a Spaniel without ears" King George V

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dracb
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Reged: 28/02/13
Posts: 133
Loc: British Columbia
Re: Teflon Patched 45-70 [Re: DarylS]
      #244517 - 28/03/14 05:49 AM

aromaker, Daryl,

Thank you for the explanations

--------------------
"The problems we face today are there because the people who work for a living are now outnumbered by those who vote for a living."

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