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Breech seating for 03 Springfield? (Read 3047 times)

Cat_Whisperer Frequent Elocutionist Offline No 1, 9.3x74R Posts: 3987 Location: Mountains of Virginia Joined: Apr 17^th, 2004	Breech seating for 03 Springfield? Mar 1^st, 2018 at 7:12pm	Print Post
	Perhaps off-topic, my apologies, but has any one tried breech seating for an 03 Springfield? I have several low-drag 30 cal moulds that could stand to be perfectly aligned to employ their BC and get good accuracy.

	Cat Whisperer (trk) Chief of Smoke Pulaski Coehorn Works and Skunk Works Drafted May 1970, Retired Maj. U.S.Army assra #9885
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frnkeore Frequent Elocutionist Offline Posts: 7661 Location: Central Point, OR 97502 Joined: Jun 16^th, 2010	Re: Breech seating for 03 Springfield? Reply #1 - Mar 1^st, 2018 at 7:22pm	Print Post
	I haven't done a 03 but, this is one that I made for my 40X Frank

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beltfed Frequent Elocutionist Offline Posts: 1826 Location: Central Wi Joined: Dec 20^th, 2007	Re: Breech seating for 03 Springfield? Reply #2 - Mar 1^st, 2018 at 8:00pm	Print Post
	Frank, Its not immediately obvious to me as to how/where you anchor the fulcrum of that "Clevite" bar, so as to push on the acorn nut... Tx beltfed/arnie


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Cat_Whisperer Frequent Elocutionist Offline No 1, 9.3x74R Posts: 3987 Location: Mountains of Virginia Joined: Apr 17^th, 2004	Re: Breech seating for 03 Springfield? Reply #3 - Mar 1^st, 2018 at 8:15pm	Print Post
	frnkeore wrote on Mar 1^st, 2018 at 7:22pm: I haven't done a 03 but, this is one that I made for my 40X Frank Cooool! (as I have a 40x in .308) was it worth the effort?

	Cat Whisperer (trk) Chief of Smoke Pulaski Coehorn Works and Skunk Works Drafted May 1970, Retired Maj. U.S.Army assra #9885
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frnkeore Frequent Elocutionist Offline Posts: 7661 Location: Central Point, OR 97502 Joined: Jun 16^th, 2010	Re: Breech seating for 03 Springfield? Reply #4 - Mar 2^nd, 2018 at 2:44am	Print Post
	beltfed wrote on Mar 1^st, 2018 at 8:00pm: Frank, Its not immediately obvious to me as to how/where you anchor the fulcrum of that "Clevite" bar, so as to push on the acorn nut... Tx beltfed/arnie The Remington's have a 2 screw mounting, on the left side of the receiver, to mount a rear aperture sight. I used those 2 holes, to hold the anchor. Frank

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frnkeore Frequent Elocutionist Offline Posts: 7661 Location: Central Point, OR 97502 Joined: Jun 16^th, 2010	Re: Breech seating for 03 Springfield? Reply #5 - Mar 2^nd, 2018 at 2:55am	Print Post
	Cat_Whisperer wrote on Mar 1^st, 2018 at 8:15pm: frnkeore wrote on Mar 1^st, 2018 at 7:22pm: I haven't done a 03 but, this is one that I made for my 40X Frank Cooool! (as I have a 40x in .308) was it worth the effort? My 40X came with a Keiger, 8 twist, 6mm Imp barrel. My wife got it (the money) for my Bday, about 7-8 years ago. Even though I wanted it at the time, I never shot it, except to fire form some brass. I bought a 722 Remington barrel, in 300 Savage, because I had a neck and throat reamer made for the 308 "Palma". I had this Idea to lengthen the 300 Savage to 308 so, I wouldn't have to trim brass and have a improved throat. While I was doing that, I though of making a BSer for it, too. I only shot it once that way and it has been in my safe since So, I guess the answer is no but, maybe I'll shoot it again? I'm not much of a bolt action guy. Frank

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beltfed Frequent Elocutionist Offline Posts: 1826 Location: Central Wi Joined: Dec 20^th, 2007	Re: Breech seating for 03 Springfield? Reply #6 - Mar 2^nd, 2018 at 11:15am	Print Post
	Another way to "breech seat" the 30 cals is to get a Lyman 308403 mold(or NOE equivalent). It casts a tapered bullet- designed by Harry Pope with the base band diameter on a taper: the front of band is about 0.314, tapered to the base at about 0.311. One simply primes and powder in a Fire Formed case and then finger seat the bullet firmly into the mouth of the case. Load and shoot. beltfed/arnie


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Cat_Whisperer Frequent Elocutionist Offline No 1, 9.3x74R Posts: 3987 Location: Mountains of Virginia Joined: Apr 17^th, 2004	Re: Breech seating for 03 Springfield? Reply #7 - Mar 2^nd, 2018 at 3:13pm	Print Post
	Thanks all! 308403 sounds like a low-cost minimal effort first step.

	Cat Whisperer (trk) Chief of Smoke Pulaski Coehorn Works and Skunk Works Drafted May 1970, Retired Maj. U.S.Army assra #9885
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waterman Frequent Elocutionist Offline Posts: 3003 Location: Behind the Redwood Curtain Joined: Jun 9^th, 2004	Re: Breech seating for 03 Springfield? Reply #8 - Mar 2^nd, 2018 at 8:31pm	Print Post
	And 308403 or 311403 (they are different) works fine in an 03. Also works fine in a Krag or in my spaghetti High Wall in .30-40 Krag. And in my tight bored German Martini stalking rifle. You can use a plugged case with an 03. The bolt does a fine job of seating the bullet.


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BudHyett Senior Forum Member Offline Posts: 281 Location: Pacific Northwest, WA State Joined: Jun 25^th, 2011	Re: Breech seating for 03 Springfield? Reply #9 - Mar 3^rd, 2018 at 11:05pm	Print Post
	This is entirely possible, it is being done. CBA competition in Plain-Base does not specify falling block actions and several people shooting the Kenmore (Washington state) matches are shooting a bolt action with breech-seating. These are single shot benchrest bolt actions, one set in a composite stock and a laminated stock for the other. The breech seater is machined to receiver diameter with the bullet seated in the face. The bolt is withdrawn and the seater set in. The bullet is seated, then the seater withdrawn. Bolt is reinserted and the shot fired.

	Country boy from Illinois living in the magical Pacific Northwest
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boats Frequent Elocutionist Offline Posts: 7732 Location: Virginia Joined: Apr 23^rd, 2004	Re: Breech seating for 03 Springfield? Reply #10 - Mar 4^th, 2018 at 8:18am	Print Post
	Cat best bullet I know if for 30/06/ or 30/40 is the old RG 4 now sold by SAECO as the 301. Back when I was shooting CBA it’s the one all the old timers recommended always propelled by 4759. About 1600 FPS was the he sweet spot. I won a few postal’s with it bench and offhand 03 Springfield and Kraig. Other obscure info is I saw a utube video about testing armor plate at Aberdeen. They had a Universal falling block receiver with a 50 BMG barrel fitted. Close range indoors crono set up to duplicate down range velocity on impact. They were hand throwing the charges and breech seating using a plug to seat. Plug would be how I would BS 03’s Boats


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