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Very Hot Topic (More than 25 Replies) Enlarging bullet mould cavity (Read 10539 times)
frnkeore
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Re: Enlarging bullet mould cavity
Reply #30 - Jun 18th, 2019 at 11:09am
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Maybe a simpler solution would be to get this bullet:

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It's only $68. It has a slight taper that you can size to .324 and use it fixed.

It is a copy of the Golden Age, French bullet or Ideal's # 319323 so, you see it's already "lapped" Smiley

Frank
  

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uscra112
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Re: Enlarging bullet mould cavity
Reply #31 - Jun 18th, 2019 at 11:13am
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Aww, Frank.  Where's the fun in that? 

  

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uscra112
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Re: Enlarging bullet mould cavity
Reply #32 - Jun 18th, 2019 at 11:16am
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But seriously, NOE has a number of good moulds for his rifle, once he finds out what his groove diameter really is.

Phil
  

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frnkeore
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Re: Enlarging bullet mould cavity
Reply #33 - Jun 18th, 2019 at 11:20am
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Phil,
You can grind off the mold number and say you lapped a French mold to .325 and did a perfect job of it Wink

Frank
  

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uscra112
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Re: Enlarging bullet mould cavity
Reply #34 - Jun 18th, 2019 at 11:22am
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And then sell it on evilBay for hundreds of $$$$ !   Win-win!
  

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Re: Enlarging bullet mould cavity
Reply #35 - Jun 18th, 2019 at 11:46am
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Thanks for the tip frank , but Wouldn't 193 grains be to heavy for a 1 in 14 twist.
I thought I would need to stay a little lighter? Say 165 to 180 No?

Doug
  
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frnkeore
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Re: Enlarging bullet mould cavity
Reply #36 - Jun 18th, 2019 at 12:45pm
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The 319323 was designed for 16 twist rifles. A 14 twist, 32 cal barrel, will handle a bullet 1.22" long, in spitzer designs. The French bullet is only 1.08 long.

190 gr bullets where a common weight for match shooting, prior to 1914. It's not the weight, it's the length and center of gravity.

Frank
  

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OLD TUCK
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Re: Enlarging bullet mould cavity
Reply #37 - Jun 18th, 2019 at 3:39pm
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Kind of surprised to see the 193 Grain bullet favored for Schuetzen in 32-40 Caliber. It just so Happens that a Pope 32-40 Mold throws a 193 Gr  bullet and it is 1.000 inches long. I have 3 and they are identical in this regard with only 
small differences due I think to some small difference body taper Diameters. I have also had opportunity to cast others and they are in the same place. Once sold a Saco .32 Mold tapered as Popes were. Guy told me that it shot very good but with a lot of tipping. And every once in a while it would go thru the paper at 200 Yds. straight sideways. So I asked it how much it weighed and his response was 210 Grs. So I took one of his bullets and Measured the overall length and it was 1.05 Long. So I offered to fix that for him and he agreed. Set it up in a 4 Jaw Chuck and got it running really good front and back. Faced .05 off the base face and re-bored the base band back to where it had been. His response a few weeks later that it did not tip as much as it had and sideways holes had stopped happening. Now both of us were shooting these bullets in original 32-40 rifles, Hi wall and Stevens which I believe were 16" Twist rifles. Now taking .05 off the base changed the weight right down to 193 Grs. So I guess Pope had something on the Ball. No claim here that would be the way to go for serious Bench completion. But generally a good rifle with a good bore and loading will shoot Better than most can hold
Offhand. HTH Regards FITZ. OLD TUCK. Smiley
  
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Re: Enlarging bullet mould cavity
Reply #38 - Jun 18th, 2019 at 4:37pm
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I miss typed my barrel is a 1-16 twist. So maybe I should
Order that noe mould. Need to start somewhere.
Thank you gentleman 

Doug
  
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uscra112
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Re: Enlarging bullet mould cavity
Reply #39 - Jun 18th, 2019 at 4:48pm
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Don't order anything until you KNOW what your groove diameter really is.
  

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frnkeore
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Re: Enlarging bullet mould cavity
Reply #40 - Jun 18th, 2019 at 5:34pm
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Fitz,
I have my own story, similar to yours.

The year after I got into this game (1986), I got a very good friend to start it, also.

The rifle I started with was a Clerke HW, with, what I thought was a Douglas, 16 twist barrel. He found a local DST HW and I told him to to get a 16 twist 32 cal, Douglas barrel and he did. I also told him to call Ron Long and get the same 1.16 long, spitzer mold, that I had and he did that, too.

Well, as you can imagine, his bullets tipped, a lot but, it shot 240/243 @ 200. At that point, I measured my twist and it was 15, not 16! So, I did some calculating and modified the Green Hill formula, to match my 15 twist, 1.16 long bullet. That changed the constant from 150, to 175. I applied that to the 1.16 bullet and 1.110 was the answer so, I also shorten that mold .050. And it stopped tipping and was competitive with my rifle.

I bought that rifle/mold combo, when he stopped shooting, do to health issues and the pictured results it what it did for me in a match. The .862 group was in the CF match not RF.

You'll note that I said that stability is a product of length AND center of gravity and that is why a 1.11 long, 4 caliber spitzer will stabilize in a 16 twist.

Frank
  

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