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510 RUM Rimmed
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How about a ring shaped rim that slides down the RUM case and expands to .550 inside diameter and then snaps into the existing extractor groove to provide a .600 rim? These would single stack in a slanted magazine and feed at least as smoothly as the 303 and 30-40 Krag.

This straight case would hold a .510 bullet with a neck diameter of .540. A 600 gr bullet would have a sectional density of .330 and make 2400 fps for 7800 FPE in an H&H length action.
 
Posts: 1111 | Location: Afton, VA | Registered: 31 May 2003Reply With Quote
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??? 50 -110, 510 wells (bigger case) turn the rim down on a 500 nitro

jeffe


opinions vary band of bubbas and STC hunting Club

Information on Ammoguide about
the416AR, 458AR, 470AR, 500AR
What is an AR round? Case Drawings 416-458-470AR and 500AR.
476AR,
http://www.weaponsmith.com
 
Posts: 40040 | Location: Conroe, TX | Registered: 01 June 2002Reply With Quote
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500 Nitro Express. 510 Nitro Express. Without all the extra work. Roll Eyes

Ray


Arizona Mountains
 
Posts: 1560 | Location: Arizona Mountains | Registered: 11 October 2004Reply With Quote
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My 510HE, my rimmed wildcat, case 3.55 in
long, straight case for falling block and break actions.Made by straightening 475 #2 brass,
with simple expander.And run though a sizer
die... 600 gr at close to
3000 in a bolt test rifle.Throat good for
600 gr round nose bullets, which allows use of
bmg spitzer bullets.Ed


MZEE WA SIKU
 
Posts: 27742 | Registered: 03 February 2003Reply With Quote
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SSK .510 Whisper ....


Marty ter Weeme
Teppo Jutsu LLC
Home of the .458 SOCOM
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Posts: 327 | Location: Texas | Registered: 22 July 2003Reply With Quote
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