Information - Cartridges [ELR-class w/ min 338 LM’s muzzle energy*] (note #)
Cartridges Matrix (9 Nov 2023) - comparative; separate tabs for 338, 375, and >.375; changes since last update in light green.
        NOTE: This file is in xls format. A FREE reader is available here. The contents were compiled from designer’s websites, wikis, and elsewhere and calculation of “Supersonic to Yds” were made using JBM’s trajectory calculator.

Individual cartridges:
33 Nosler (including partial drawing), SAAMI
33XC (Tubb), Peterson cartridge drawing
338-378 Weatherby, wiki, “old” SAAMI
338 Allen Magnum
338 Allen Xpress
338 Edge (and 338 Edge +P), wiki, chamber reamer drawing (2)
338 EnABELR (Applied Ballistics), Peterson cartridge drawing
338 Excalibur, chamber reamer drawing (2)
338 Jarrett
338 Lapua Magnum, wiki, CIP, SAAMI (pg. 116), chamber reamer drawing (2), chamber reamer drawing from Caina-Longbranch Defense Systems, Canada, specifically for use with 300 gr SMKs, i.e., the CLB reamer
338 Norma Magnum, wiki, CIP, SAAMI, Peterson cartridge drawing, article (review), chamber reamer drawing - CIP min material (2), chamber reamer drawing (Jimmie Sloan/338 Norma Magnum USA) - CIP max material (4), also (7)
338 SnipeTac, chamber reamer drawing, 300 gr (2)
338 Terminator (Defensive Edge)
8.59 (.338) Titan (Lazzeroni), chamber reamer drawing, case drawing (6)
338 Yogi (Dave Tooley) - TooleyRifle at Carolina.rr.com
338 Xtreme, wiki, additional info and pic, also (7)
37XC (Tubb)
375/416, chamber reamer drawing (2)
375/50 BMG (7), chamber reamer drawing (5)
375/50 JGS, chamber reamer drawing (3)
375 Allen Magnum
375 Allen Xpress
375 CheyTac (9.5x77), CIP, Peterson/CIP (9), chamber reamer drawing (2)
375 EnABELR (Applied Ballastics), Peterson cartridge drawing
375 Hellfire  f
375 Hubel Express/HE, public domain design; reamer drawing; cases, dies, and reamers available, contact 585he at cmsinter.net
375 Lethal Magnum, also
375 Liebert
375 Mercenary, reamers, brass, and dies available; contact merc375 at outlook.com
375 Remington Ultra Magnum (RUM), wiki, SAAMI (pg. 132)
9.53 (.375) Saturn (Lazzeroni), chamber reamer drawing (6)
375 SnipeTac, chamber reamer drawing (2)
375 Swiss P (RUAG), CIP
9.5x70 ELR/9.5x70 Tornado (7)
375 Viersco Magnum (VM2) also long neck version (7)
378 Weatherby, wiki
408 CheyTac (10.36x77), wiki, CIP, Peterson/CIP (9), also (7), chamber reamer drawing (2), drawing #1, #2 (3)
416 Barrett, wiki, CIP, also 1, 2 (7)
416 Hellfire  f
416 TYR (10.6x80, Grillmayer), CIP, (7)
416 Viersco Magnum (7)
416 Warner, chamber drawing (10)
Vigilance V440 - video, comparo pic (from the left - .50 BMG, V440, .416 Barrett, .408 CT), chamber reamer drawing (8)
458 Viersco Magnum (a variant of the 416 Viersco Magnum)
460 Steyr, CIP, also (7), chamber reamer drawing (2)
20/50 Anzio (call Anzio)
50/20 PAC-NOR (50/20mm M-103), chamber reamer drawing (5)
50 BMG (12.7x99mm NATO), wiki, CIP, also (7), drawing (3)
50 DTC Europ (Danis), chamber reamer drawing (3)
50 Fat Mac (7)
50 Vulcan, drawing (3)
510 Allen Magnum
510 DTC Europ (50 DTC), GunWiki, wiki, CIP, also (7), chamber reamer drawing (2)
12.7 mm. M48-A1 Spotter (7)
12.7x108mm (Russian), CIP, wiki, also (7)
14.5x114mm (Russian), wiki, also (7), chamber reamer drawing, (2)
14.9x102mm SOP
20x102mm (Vulcan +), see (7)
20x110mm (Hispano-Suiza +), see (7)

General footnote:  There is NO industry standard/control over non-CIP/SAAMI drawings, e.g., drawings with the SAME cartridge name may have DIFFERENT dimensions. Additionally, even for the same "cartridge case" dimensions, the throat dimensions may vary between chamber reamer drawings. Project-specific chamber/chamber reamer drawings are your best source of dimensions. Proceed with caution!

CIP (Commission Internationale Permanente pour l'Epreuve des Armes à Feu Portatives - roughly the European equivalent of SAAMI); ELR cartridge and chamber drawings - click associated link (above):
   338 Lapua Magnum
   375 CheyTac
   375 Swiss P
   408 CheyTac
   416 Barrett
   416 TYR
   460 Steyr
   50 BMG
   510 DTC
   12.7x108 Russian

SAAMI (Sporting Arms and Ammunition Manufacturers’ Institute) and New and Revised - cartridge and chamber drawings - click associated cartridge link (above):
   33 Nosler
   338 Lapua Magnum
   338 Norma Magnum
   375 Remington Ultra Magnum
   NOTE: The previously-listed Weatherby .338-.378 and .378 are not in the current document.
   
CH4D cartridge (caliber) list - use the shell holder # search to find wildcats and variants that MAY fit the same bolt face.

(1) Per Lapua’s website, the 338 LM’s muzzle energy is 4821 (max factory load).
(2) Chamber reamer drawings courtesy of Mr. Dave Kiff, Pacific Tool and Gauge.
(3) Additional drawings (courtesy of Dave at CH4D) - see cautionary “General footnote”, above.
(4) Provided courtesy of Mr. Jimmie Sloan, the developer of the 338 Norma Magnum.
(5) Drawings contributed by PAC-NOR. NOTE that some cartridges may have the same or virtually the same name, and be from the same reamer company, but the dims may be different enough to present VERY SERIOUS problems if assumed interchangeable, e.g., 375/50. Proceed with caution!!!
(6) Chamber reamer and case drawings courtesy of the designer, John Lazzeroni, Lazzeroni Arms
(7) Association of Spanish Cartridge Collectors (AECC) - English language option (upper right). Database here - click the Category drop down and select Central Fire/CF, then enter your search term in the Caliber Finder field and tap the question icon.  NOTE: their search engine is terrible! Try searching on the basic caliber, e.g., .416, to get a list to choose from.  A couple of my entries are from the old Spanish language site because some cartridges have not been migrated over to the new site.  Be patient!
(8) Chamber reamer drawing courtesy of the designer, Keary Ritchie, Vigilance Rifles.
(9) At some point in October 2020, CIP removed both the 375 and 408 CT drawings from their website. I’m advised that it was “in an overabundance of caution” following claims (unsupported as best I can tell at this point - 11/17/2020) about malfunction and rifle damage “because of” failure of ammunition manufacturers to meet the manufacture’s (CheyTac’s) specs...specs which, per CheyTac, did not match what CIP had been posting since 2016-17. Peterson, as the claimed world’s-largest supplier of brass for these chamberings, was blindsided by the CIP drawing removals and has, in response, produced and posted Peterson (effective) re-draws of the official, previously-CIP-posted drawings. See the links in the listing above. I have attempted to directly contact CIP by the only communications mechanism I can find, the Contact page on their website.  My most recent attempt was April 9, 2021. On Jan 13, 2022 I added back the now-present “official” CIP drawing links.
(10) Chamber reamer drawing courtesy of Dan Warner, Warner Tool Company.





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