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Fire Forming 38-50 Cases (Read 7229 times)

SSShooter Frequent Elocutionist Offline Posts: 2944 Location: Southern NJ Joined: Aug 1^st, 2010	Fire Forming 38-50 Cases Jul 27^th, 2015 at 5:22pm	Print Post
	Will be fire-forming a bunch of 30-40 Gov't cases to 38-50. Am wondering how far down one should anneal the cases prior to fire-forming? All the way to the shoulder? Will be using ~8gr of Unique with the balance being CoW and a drop of Elmer's Glue to keep everything in place. Thanks.

	Glenn - Stevens 044 1/2, Bartlein SS 5R barrel in 22LR
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marlinguy Frequent Elocutionist Offline Ballards may be weaker, but they sure are neater! Posts: 18237 Location: Oregon Joined: Feb 2^nd, 2009	Re: Fire Forming 38-50 Cases Reply #1 - Jul 27^th, 2015 at 6:44pm	Print Post
	If I was using .30 krag cases (or any bottleneck case) I'd anneal down through the shoulder, so it would blow out easier, and not lose any from splitting. Considering the difference in case length, you wont quite get it fully fire formed, as the extra @ .3" longer case will form to the bore size. Hopefully your dies will take it the rest the way to expand to full neck size after trimming.

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SSShooter Frequent Elocutionist Offline Posts: 2944 Location: Southern NJ Joined: Aug 1^st, 2010	Re: Fire Forming 38-50 Cases Reply #2 - Jul 27^th, 2015 at 7:01pm	Print Post
	Will trim all cases back about 0.200" before fire-forming and then FL size and retrim to the correct length afterwards.

	Glenn - Stevens 044 1/2, Bartlein SS 5R barrel in 22LR
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Hiwall55 Senior Forum Member Offline Posts: 468 Location: west central Illinois Joined: Jun 30^th, 2012	Re: Fire Forming 38-50 Cases Reply #3 - Jul 27^th, 2015 at 9:03pm	Print Post
	I just fire formed 200 38-50 from 30/40. Do not use any wad, I don't know about glue, I used 10 grains unique then filled with cream wheat hold everything straight up and shoot, no splits and formed perfect. Cases started at 2.3 long and formed to 2.75 then I trimmed them .010 longer than chamber and annealed them and shot BP loads them trimmed them to length. I tried a wad on top and every other one split tried annealing first again split city.My chamber is 2.220


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marlinguy Frequent Elocutionist Offline Ballards may be weaker, but they sure are neater! Posts: 18237 Location: Oregon Joined: Feb 2^nd, 2009	Re: Fire Forming 38-50 Cases Reply #4 - Jul 27^th, 2015 at 11:54pm	Print Post
	2.220" seems like a fairly long chamber for a .38-50 Ballard. My .38-55 is only 2.12" long chamber.

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JerryH Frequent Elocutionist Online ASSRA Member #10876 Posts: 1336 Location: Easton, CA Joined: Nov 9^th, 2014	Re: Fire Forming 38-50 Cases Reply #5 - Jul 28^th, 2015 at 12:21am	Print Post
	Maybe the chamber is for a Remington 38-50 Hepburn. My 38-50 Hepburn chamber was (back in my BPCR Silhouette days) 2.240. This was a Dan T. designed chamber for use with Remington 30-40 cases. JerryH

	I'm not a complete idiot, some of my parts are missing.
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SSShooter Frequent Elocutionist Offline Posts: 2944 Location: Southern NJ Joined: Aug 1^st, 2010	Re: Fire Forming 38-50 Cases Reply #6 - Jul 28^th, 2015 at 7:30am	Print Post
	Like Jerry's, mine is a 38-50 Rem with a DanT designed chamber. Is in an original Hepburn action.

	Glenn - Stevens 044 1/2, Bartlein SS 5R barrel in 22LR
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marlinguy Frequent Elocutionist Offline Ballards may be weaker, but they sure are neater! Posts: 18237 Location: Oregon Joined: Feb 2^nd, 2009	Re: Fire Forming 38-50 Cases Reply #7 - Jul 28^th, 2015 at 10:27am	Print Post
	JerryH wrote on Jul 28^th, 2015 at 12:21am: Maybe the chamber is for a Remington 38-50 Hepburn. My 38-50 Hepburn chamber was (back in my BPCR Silhouette days) 2.240. This was a Dan T. designed chamber for use with Remington 30-40 cases. JerryH Thanks! Guess I have a one track mind!

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.22Hepburn Oldtimer Offline Posts: 844 Location: Pennsylvania Joined: Feb 18^th, 2008	Re: Fire Forming 38-50 Cases Reply #8 - Jul 28^th, 2015 at 3:48pm	Print Post
	I've formed several hundred Rem 30-40 cases for my 38-50 with no annealing and had no problems with the brass. I used 9gr of Bullseye with cases filled with Cream of Wheat.


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RoyB Oldtimer Offline Posts: 851 Location: Dartmouth, MA Joined: Mar 28^th, 2011	Re: Fire Forming 38-50 Cases Reply #9 - Aug 5^th, 2015 at 6:21pm	Print Post
	Back in the day when I was shooting IMHSA I used a 7TCU....We would buy inexpensive 223 ammo and simply shoot it through the 7mmTCU barrel. Would fireform beautifully! I would imagine shooting 30-30 through a 38-55 would accomplish the same thing. Saves time and money as no forming die is needed and you fireform the case to your chamber in one fell swoop!

	Roy B Dartmouth, MA (You need to *Login* or *Register* to view media files and links)
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Hi-Wall56 Full Member Offline Posts: 204 Location: Banks of the Brazos River Joined: Feb 11^th, 2011	Re: Fire Forming 38-50 Cases Reply #10 - Aug 5^th, 2015 at 9:13pm	Print Post
	Steve Rhoades at the Arizona Sharpshooter website makes an expander specifically for the .38-50 from .30-40 Krag case. You can contact him at bpsteve@cox.net Great guy to deal with and an avid shooter of bpcr, mid-range and long range.


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mjs3240 Participating Member Offline Posts: 48 Joined: Jan 28^th, 2007	Re: Fire Forming 38-50 Cases Reply #11 - Aug 9^th, 2015 at 11:16am	Print Post
	I have fire-formed several hundred 38-50 cases from 30-40 Krag cases. I have never annealed cases prior to fire forming and I have had zero case splits. My fire forming load is 13 grains of bullseye and fill case with corn meal and install a wax plug. They come out a little long but I just trim them before loading and everything is good to go. Dan borrowed 3 fired 38-50 cases from me and my FL sizing die and used these to design his 38-50 reamer. Both of the 38-50's I have now were chambered using his reamer as my first 38-50 had a 15" twist and was not very accurate past the turkey line. The two I have now are a 12" and a 10" twist. This is one of my favorite calibers. Both rifles are on original Hepburn actions.


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