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Hot Topic (More than 10 Replies) Breech seater distorts base of bullet ?? (Read 10354 times)
BP
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Re: Breech seater distorts base of bullet ??
Reply #15 - Jul 11th, 2015 at 2:09pm
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Brudford01 wrote on Jul 9th, 2015 at 9:34pm:
... When breech seating my first batch of bullets  with very little effort was needed to seat . My second batch of bullets I had to use a lot of pressure to breech seat each bullet . ...

Apparently, the throating was fine for the first batch of bullets.

  

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Brudford01
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Re: Breech seater distorts base of bullet ??
Reply #16 - Jul 11th, 2015 at 4:45pm
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Yes, the first batch of bullets were perfect. Seated just like everyone is telling me they should . You can view a post under general discussion" New CPA at the range "and look at a picture of a nice 200 yard group . Your reply got me thinking now . I ordered my CPA back in Dec. 2014 and Gail sent me the Hoch 32-40 mold about one week later . I casted that first batch of bullets the first week of Jan. 2015 . Received the rifle in June. So the bullets had sat for over five months and they were casted from the junk yard scrap lead and produced a great group and seated very easy. Would of the bullets diameter shrunk over six months ? Same lube also used. I really don't think the barrel is a problem I think it is the Hoch mold ! I Let Gail know I was going to breech seat. CPA's service and quality is just to good to make a mistake like that with the barrel . I'am going to call Hoch mold company on Monday . And yes that is a hammer that I used to tap the back of the bullet seater handle. My problems started not with the 20:1 lead mix but using the alloy mix from Jan. 2015, however these bullets did not sit for six months but were used within one week .
  
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gunlaker
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Re: Breech seater distorts base of bullet ??
Reply #17 - Jul 11th, 2015 at 6:37pm
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If you are certain that the mold isn't right then I'd call Gail about it.  I had a Hoch mold with a nose that was way oversized (a couple of years ago ) and after talking to her she said they had a few that were out of spec.  She sent me a replacement right away.  Interestingly that one was a bit too small for my CPA with a Badger barrel, but absolutely perfect for my Ruger with an RKS barrel Smiley

I suspect that the small differences in groove/bore specs across the various barrel makes that CPA sells makes it a bit more difficult to supply a well fitting mold.  My new RKS .38 barrel is so tight ( bore diameter ) that none of my existing molds is even close.  With the exception of a bore diameter PP mold that I bought a while back.

Chris.
  
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40_Rod
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Re: Breech seater distorts base of bullet ??
Reply #18 - Jul 12th, 2015 at 9:30am
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If the bullets fit right the first time and not the second then something happened to the mold. The scrap lead may have unwanted meatles in it. Lead / Antimony alloys will get harder with age Lead / Tin alloys will get softer with age. Lead / Antimony will stay larger Lead / Tin will shrink more. 
I am assuming that you did dump the old scrap out before starting with the 20:1? If not your alloy is still contaminated.
Have you checked a bullet to see if the bullet is round? 
Get rid of the Pope Hammer and start using a plugged case until you can get a mechanical seater made.

40 Rod
  
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Re: Breech seater distorts base of bullet ??
Reply #19 - Jul 12th, 2015 at 10:13am
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There is another possible cause for your problem.  On some barrels, a goodly amount of carbon fouling will build up in the throat area.  Normal cleaning with patch and solvent will not remove this fouling.  You must use a bronze brush.

I speak from experience.  I have a older, long-leade barrel in .32-40.  After approximately 25-30 shots, the bullets become increasingly more difficult to seat.  As more seating force is required, accuracy drops of dramatically.

The only way to deal with this problem (for this particular rifle) is to make several passes with a bronze brush following two 10-shot targets.  I follow-up with one patch moistened with Ballistol followed by a dry patch.  After two fouling shots, the barrel is again good to go. 

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KAF
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Re: Breech seater distorts base of bullet ??
Reply #20 - Jul 12th, 2015 at 10:35am
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(You need to Login or Register to view media files and links);  WILL remove carbon fouling, easily.

Nylon brush with patch wrapped around it.
  
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Re: Breech seater distorts base of bullet ??
Reply #21 - Jul 12th, 2015 at 1:19pm
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In the most recent post frnkeore nailed it. A bullet that fits and seats easily will work. I own a number of 32-40s that have factory chambers and throats. I use bullets from a Pope 32 caliber mold, 193 Grs. It is very much tapered .316 up to the last band and that casts .326/.327 slightly out of round. My breech seating procedure is to drop the bullet in the chamber and slide the loaded case in behind. In some rifles there is slight resistance to the last 1/16 to 1/8" but I can push it all the way with my thumb. Now this I think does not constitute real breech seating but the effect is the same. I do not make any claim that this would be a really good procedure for bench rest shooting. But I can say these rifles all shoot far better than I can hold and when I was younger and stronger I shot some very respectfull scores and my brass lasts forever. I have had a lot of opportunities to cast from Pope Molds 32-40 and they all had two consistant characteristics. A) They were all 1.00" long very tight. B) weights ran right around 193/195 Grs.
diameters ran from .315/.316 at the front band and .323/.326
at the base band. So far I have not found a 32-40 with a factory chamber that they will not breech seat in easily cast 26/1 to 30/1 lead/tin alloy. Purchasing bullets from a production caster for Schuetzen often leads to very hard alloys. This because they cast easily and do not beat themselves up in shipping. I have not ever had any success with hard alloys in Schuetzen loads. First time I tried to Muzzle load my Pope 38-55 with a hard alloy I nearly broke my hand.
The alloy was 50/50 linotype and pure lead. I had been using that for years in a 30 cal bolt gun, shot well. But not the alloy for soft loads Muzzle loaded. Well all for now. HTH regards, FITZ. Smiley
  

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