ASSRA Forum - Forming 8.15x46R from 32-40

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Forming 8.15x46R from 32-40 (Read 3576 times)

Pentz Senior Forum Member Offline Funf und Zwanzig mit den Hut Posts: 435 Location: Vancouver, WA Joined: Sep 4^th, 2014	Forming 8.15x46R from 32-40 Jan 23^rd, 2016 at 10:04pm	Print Post
	Learned a lesson today; went out and fire-formed 25 32-40 cases cut to 46mm and discovered that they actually shortened .2mm as a result of the process. Gonna have to cut the next batch longer - measure twice, cut once!

	ASSRA Member Yoostabe # 11497
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jfeldman ASSRA Board Member Offline Posts: 1102 Location: Imperial Beach, Ca Joined: Nov 5^th, 2005	Re: Forming 8.15x46R from 32-40 Reply #1 - Jan 23^rd, 2016 at 10:43pm	Print Post
	Hate to see the 32-40's get cut when there's so many 30-30 cases out there. I found the same thing with my 8.15 X 46R. Regards, Joe


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Pentz Senior Forum Member Offline Funf und Zwanzig mit den Hut Posts: 435 Location: Vancouver, WA Joined: Sep 4^th, 2014	Re: Forming 8.15x46R from 32-40 Reply #2 - Jan 23^rd, 2016 at 11:07pm	Print Post
	I feel your pain; these were an odds and ends lot of reloads bought at a gun show. I pulled the bullets, dumped the powder and put them away. I DO have a supply of NOS stock that will NOT get cut. Nearly all the 30-30s have rims too thick to allow closing of the tilting breech, btw. Don't have access to a lathe to turn them down.

	ASSRA Member Yoostabe # 11497
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frnkeore Frequent Elocutionist Offline Posts: 7549 Location: Central Point, OR 97502 Joined: Jun 16^th, 2010	Re: Forming 8.15x46R from 32-40 Reply #3 - Jan 24^th, 2016 at 1:35am	Print Post
	It's best to fire form the brass, before you do anything. I use 10 gr Unique and fill with CoW. At 46mm, you'll have a long way to the start of the rifling. The chambers in most of the 8.15x46r, are pretty long and if you fire form first, you can shorten the case until your bullet, whether SR or cylinderical, will just fit the neck. If you have a SR bullet and after the above, it still won't chamber, cut it back in .010 increaments, until it will just chamber. In my rifle, the cases can be 1.94 (49.3mm) and still be short of the rifling and the ID of the case mouth is .316 @ at length. Frank

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frnkeore Frequent Elocutionist Offline Posts: 7549 Location: Central Point, OR 97502 Joined: Jun 16^th, 2010	Re: Forming 8.15x46R from 32-40 Reply #4 - Jan 24^th, 2016 at 1:55am	Print Post
	I forgot to say: Take the expander out of the 32/40 die and use FL, 30/30 cases, drop the case in the chamber and measure how far it needs to go and then shorten it by that much. Before fire forming. Frank

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Pentz Senior Forum Member Offline Funf und Zwanzig mit den Hut Posts: 435 Location: Vancouver, WA Joined: Sep 4^th, 2014	Re: Forming 8.15x46R from 32-40 Reply #5 - Jan 24^th, 2016 at 7:56am	Print Post
	Thanks. I need to find a way to thin the rims sufficiently to seat firs. Another project......

	ASSRA Member Yoostabe # 11497
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40_Rod Frequent Elocutionist Offline Extremism in the persuit of accuracy is not a vice Posts: 4285 Location: Knoxville, TN Joined: Apr 20^th, 2004	Re: Forming 8.15x46R from 32-40 Reply #6 - Jan 24^th, 2016 at 9:02am	Print Post
	I used to use Winchester 38-55s to make 8.15 X 46Rs they're too short for a real 38-55 chamber anyway so it helped use them up. 40 Rod


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marlinguy Frequent Elocutionist Offline Ballards may be weaker, but they sure are neater! Posts: 17449 Location: Oregon Joined: Feb 2^nd, 2009	Re: Forming 8.15x46R from 32-40 Reply #7 - Jan 24^th, 2016 at 9:53pm	Print Post
	I used .32 Win. Spl. to form cases for my Aydt. I had a bunch of them, and they were easy to form and trim for it. Used them for my .32-40 also, until I ran into a bunch of .32-40 at our local small show cheap.

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Bonner Full Member Offline Posts: 135 Location: middle georgia Joined: Mar 2^nd, 2015	Re: Forming 8.15x46R from 32-40 Reply #8 - Jan 25^th, 2016 at 12:34pm	Print Post
	Pentz, You can bite the bullet and order new RWS 8.15x46R cases from Huntington in oroville, Calif. 530-534-1210 . 20 new cases cost $ 35.98 plus $ 5.95 two-day mail. I hope this helps. Bonner


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Pentz Senior Forum Member Offline Funf und Zwanzig mit den Hut Posts: 435 Location: Vancouver, WA Joined: Sep 4^th, 2014	Re: Forming 8.15x46R from 32-40 Reply #9 - Jan 25^th, 2016 at 8:08pm	Print Post
	Bonner wrote on Jan 25^th, 2016 at 12:34pm: Pentz, You can bite the bullet and order new RWS 8.15x46R cases from Huntington in oroville, Calif. 530-534-1210 . 20 new cases cost $ 35.98 plus $ 5.95 two-day mail. I hope this helps. Bonner Thanks. I grew up in Oroville and will be heading down in 3 weeks to visit family. Always stop in the Huntington store to get a scare from their pricing and will inquire. My father went to school with Fred Sr. and we always bought our stuff there; I still use my RCBS Junior I bought in High School.

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