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Stop ring design (Read 6544 times)

Pentz Senior Forum Member Offline Funf und Zwanzig mit den Hut Posts: 435 Location: Vancouver, WA Joined: Sep 4^th, 2014	Stop ring design Jan 24^th, 2016 at 10:48pm	Print Post
	OK, I think the case issue is resolved. Now to the bullet. NOE and Accurate both offer stop ring molds. Without getting into the weeds, the NOE mold looks good. A 319289 bullet tamped a couple of inches past the throat measures .310/.3165. The mouth of my fired case measures .325. The NOE base band is .322, the ring .334 and the nose .316. Looks to me like a very good fit. Any issues?

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frnkeore Frequent Elocutionist Offline Posts: 7549 Location: Central Point, OR 97502 Joined: Jun 16^th, 2010	Re: Stop ring design Reply #1 - Jan 25^th, 2016 at 12:19am	Print Post
	The only one that I can think of is squeezing the bullet down .0055 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: Stop ring design Reply #2 - Jan 25^th, 2016 at 1:00am	Print Post


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frnkeore Frequent Elocutionist Offline Posts: 7549 Location: Central Point, OR 97502 Joined: Jun 16^th, 2010	Re: Stop ring design Reply #3 - Jan 25^th, 2016 at 1:44am	Print Post
	You might have Accurate make this design. It has much less lead to extrude. Frank

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Dales Senior Forum Member Offline Posts: 316 Location: Western NY Joined: Oct 21^st, 2013	Re: Stop ring design Reply #4 - Jan 25^th, 2016 at 10:53am	Print Post
	I have been using the NOE mould and have tried it in 5 8.15x46r rifles and it has worked well in all of them . The best accuracy comes from having case over all length just long enough to push the stop ring into the chamber far enough to start sizing it down . The only problem is getting them to make the mould . I see he only has a 5 cavity mould in stock . Dales


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RSW Frequent Elocutionist Offline Posts: 1269 Location: Arizona Joined: Sep 8^th, 2006	Re: Stop ring design Reply #5 - Jan 25^th, 2016 at 11:43am	Print Post
	Pentz Frank's drawing is far more sophisticated than mine. I'm just throwing it out there for a different perspective on a stop ring bullet profile. My Aydt has kind of a long cone-shaped throat so I moved the stop ring closer to the bullet base so the front band would engage the rifling. Steve Brooks made the mould, it works fine in my rifle. You will probably have to make the bullet bearing ring diameters fit your particular rifle, regardless of the bullet profile you choose. Best of luck with your rifle

	Randy W ASSRA 10211 - ISSA 125 There are indeed two Americas. Simply put, it is not the haves and have nots. The two Americans are in reality divided into those who do and those who don't.
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frnkeore Frequent Elocutionist Offline Posts: 7549 Location: Central Point, OR 97502 Joined: Jun 16^th, 2010	Re: Stop ring design Reply #6 - Jan 25^th, 2016 at 12:08pm	Print Post
	Randy's bullet is also a excellent design and would be better in a 46mm long case. I drew my bullet to fit in a longer case, like I use so, the bullet and inside neck diameter will be the same. As you know, the shorter case will have a larger mouth opening and a .316-7 diameter bullet won't be supported in side the neck. With any bullet you use, the case length will be how you adjust the OAL to fit the bullet in the throat. Frank

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beltfed Frequent Elocutionist Offline Posts: 1802 Location: Central Wi Joined: Dec 20^th, 2007	Re: Stop ring design Reply #7 - Jan 25^th, 2016 at 12:17pm	Print Post
	Interesting. I note both of the above designs use a cylindrical stop ring. my old Ideal 308281 stop ring mold for the 30USA has a taper on the stop ring, which I imagine was done so as to fit up into the freebore or leade better. Check on Frank's drawing of it here on the website. beltfed/arnie


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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: Stop ring design Reply #8 - Jan 25^th, 2016 at 8:14pm	Print Post
	Excellent suggestions all. First, I need to form and trim cases of sufficient length to push a stop ring into the throat. Next, figure the best point for the stop ring. Then, design a nose that will be lightly bore-riding to take advantage of a centered stop ring. Finally, a base of adequate size to reduce case mouth slop. Simple...cough cough... Thanks again.

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westerner Frequent Elocutionist Offline deleted posts and threads record holder. Posts: 12071 Location: Why, out West of course Joined: May 29^th, 2006	Re: Stop ring design Reply #9 - Jan 25^th, 2016 at 8:34pm	Print Post
	Bill Loos made a mold for Biggis' Martini rifle. Is a short action Martini. Biggi had a maximum cartridge length required for loading. Been in my pocket for the last month. Sorta grungy. Joe.

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bpjack Frequent Elocutionist Online Posts: 3541 Location: East Olympia, WA Joined: May 18^th, 2008	Re: Stop ring design Reply #10 - Jan 25^th, 2016 at 8:44pm	Print Post
	You know you are a rifle crank when: You have a lubed lead bullet in your pocket, just in case. Jack

	ASSRA # 11318 Experience is something you don't get until just after you need it.
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westerner Frequent Elocutionist Offline deleted posts and threads record holder. Posts: 12071 Location: Why, out West of course Joined: May 29^th, 2006	Re: Stop ring design Reply #11 - Jan 25^th, 2016 at 8:46pm	Print Post
	Have three bullets in my pocket and a spare tooth in my shaving kit. Never hurts to be prepared. Joe.

	A blind squirrel runs into a tree every once in a while.
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Schuetzenmiester Frequent Elocutionist Offline Posts: 6707 Location: Cool Wet Side of WA Joined: Apr 27^th, 2008	Re: Stop ring design Reply #12 - Jan 25^th, 2016 at 9:12pm	Print Post
	More than 10 in your pocket classifies your pocket as a single shot lead bullet magazine

	"some old things are lovely, warm still with life ... of the forgotten men who made them." - D.H. Lawrence
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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: Stop ring design Reply #13 - Jan 25^th, 2016 at 9:37pm	Print Post
	Only 7 if in NY...oh wait...bullets are legal in NY?

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westerner Frequent Elocutionist Offline deleted posts and threads record holder. Posts: 12071 Location: Why, out West of course Joined: May 29^th, 2006	Re: Stop ring design Reply #14 - Jan 25^th, 2016 at 9:52pm	Print Post
	When Biggi flew home she had a hundred of her new lead bullets in her luggage. The gooberment over there confiscated them. She's getting them back. A Gooberment can never be to careful. Joe.
	« Last Edit: Jan 25^th, 2016 at 9:59pm by westerner »
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