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Re: 8 x 57 Necked Down to 7mm PJGunner #13746871 04/16/19
Joined: Sep 2010 Posts: 19,179 Southern Arkansas J jwall Campfire Ranger
jwall Campfire Ranger J Joined: Sep 2010 Posts: 19,179 Southern Arkansas	Originally Posted by PJGunner The 7x57 = 1.470" to the beginning of the shoulder. The 8x57 = 1.500" to the beginning of the shoulder. Both cartridge cases are 57MM in length. What was the question again???? Paul B. Compare the O D at the bases and shoulders. UIM the 8mm is larger Around. Jerry jwall- * 3100 guy* A Flat Trajectory is Never a Handicap Speed is Trajectory's Friend !!

GB1

Re: 8 x 57 Necked Down to 7mm jwall #13749017 04/17/19
Joined: Sep 2010 Posts: 19,179 Southern Arkansas J jwall Campfire Ranger
jwall Campfire Ranger J Joined: Sep 2010 Posts: 19,179 Southern Arkansas	From Above ^^^^^^^^ "Compare the O D at the bases and shoulders. UIM the 8mm is larger Around." There is NOT as much diff as I thot. It looks a little larger due to the 8mm neck compared to 7mm neck. 7X57 - Base OD = .471 8X57 - Base OD = .469 7X57 - Shold OD = .431 8X57 - Shold OD = .434 Jerry jwall- * 3100 guy* A Flat Trajectory is Never a Handicap Speed is Trajectory's Friend !!

Re: 8 x 57 Necked Down to 7mm Bandukwallah #13749118 04/17/19
Joined: Sep 2014 Posts: 3,456 wyoming S shootbrownelk Campfire Tracker
shootbrownelk Campfire Tracker S Joined: Sep 2014 Posts: 3,456 wyoming	Call it the 7mm/8mmx57 Creedmauser.

Re: 8 x 57 Necked Down to 7mm Bandukwallah #13749353 04/17/19
Joined: Jun 2004 Posts: 7,168 G greydog Campfire Tracker
greydog Campfire Tracker G Joined: Jun 2004 Posts: 7,168	Might be better to simply stay with the 8mm bore and use 7mm bullets and a sabot. For extreme range, 6.5mm bullets in an appropriate sabot. Larger base area results in higher velocities, no bullet deformation from rifleing means a better and more consistent BC. Regardless of how it's done, there is little doubt this will be an exciting development. Before we jump right into it though, we might want to consider necking up the 6mm Remington instead. Has anyone given any thought to the 7.5x55 Swiss necked down to 7? GD

Re: 8 x 57 Necked Down to 7mm Bandukwallah #13749374 04/17/19
Joined: Dec 2005 Posts: 10,258 Chassohowitzka, FL M Muffin Campfire Outfitter
Muffin Campfire Outfitter M Joined: Dec 2005 Posts: 10,258 Chassohowitzka, FL	Using the 8x57 case and resizing it to 7 probably makes as much sense as reducing a 284 bore to 277............... "...A man's rights rest in three boxes: the ballot box, the jury box and the cartridge box..." Frederick Douglass, 1867 ( . Y . )

IC B2

Re: 8 x 57 Necked Down to 7mm Bandukwallah #13749401 04/17/19
Joined: Sep 2004 Posts: 2,701 Lakewood, CO z1r Campfire Regular
z1r Campfire Regular Joined: Sep 2004 Posts: 2,701 Lakewood, CO	The only real difference between the 8x57 and 7x57 case is that the shoulder on the 8x57 is further forward by 0.099". It does then have additional case capacity. Enough to be worth the effort? Hard to say. I like the 7x57 as is. If the 7x57 is built on a standard length action, leade allowing, you can seat bullets out to a longer COAL and thereby increase the case capacity without resorting to any wildcat shenanigans. But if it scratches an itch you have, have at it! If I have the need for more capacity, I bust out the .280 AI.

Re: 8 x 57 Necked Down to 7mm Bandukwallah #13749576 04/17/19
Joined: Sep 2004 Posts: 1,800 The U.P.'s U.P. BullShooter Campfire Regular
BullShooter Campfire Regular Joined: Sep 2004 Posts: 1,800 The U.P.'s U.P.	Here are some maximum dimensions for the two cartridges according to CIP, with mm measurements converted to inches: Code 7x57 8x57 -------------- Rim Thickness: .0453 .0512 Rim Diameter: .4764 .4705 Head diameter: .4728 .4701 Shoulder dia: .4299 .4311 Shoulder length: 1.7260 1.8190 Shoulder angle: 20.90° 19.10° The 8x57 values were based on the 8x57 IS cartridge data. SAAMI values for the same cartridges differ a bit from CIP values. Most cartridges will have actual measurements less than those listed here. Using the approximate volume values in Ken Howell's cartridge book, the 8x57 case will have about 6% greater capacity. Name? Call it the 7mm Bandukwalla, or 280 or .284 Bandukwalla. With a British accent, it might be the 275 Bandukwalla. --Bob

Re: 8 x 57 Necked Down to 7mm Bandukwallah #13749755 04/17/19
Joined: Oct 2007 Posts: 14,231 N.E.Wisconsin H Huntz Campfire Outfitter
Huntz Campfire Outfitter H Joined: Oct 2007 Posts: 14,231 N.E.Wisconsin	Its all right to be white!! Stupidity left unattended will run rampant Don't argue with stupid people, They will drag you down to their level and then win by experience

Re: 8 x 57 Necked Down to 7mm shootbrownelk #13750600 04/17/19
Joined: Jun 2006 Posts: 10,488 Western NY State 22250rem Campfire Outfitter
22250rem Campfire Outfitter Joined: Jun 2006 Posts: 10,488 Western NY State	Originally Posted by shootbrownelk Call it the 7mm/8mmx57 Creedmauser. ........ Amazing that a "Creed" comment didn't show up until page 7...... While I was thinking Germanic stuff like 7mm Creedenscheutzen.

Re: 8 x 57 Necked Down to 7mm Bandukwallah #13751030 04/17/19
Joined: Dec 2002 Posts: 22,274 Back in Texas, for good! tex_n_cal Campfire Ranger
tex_n_cal Campfire Ranger Joined: Dec 2002 Posts: 22,274 Back in Texas, for good!	Darn, it coulda been the parent case for the .270 Ingwe... "...the designer of the .270 Ingwe cartridge!..."

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Re: 8 x 57 Necked Down to 7mm BullShooter #13752396 04/18/19
Joined: Jun 2005 Posts: 844 Caroline du Nord B Bandukwallah OP Campfire Regular
OP Bandukwallah Campfire Regular B Joined: Jun 2005 Posts: 844 Caroline du Nord	Originally Posted by BullShooter Here are some maximum dimensions for the two cartridges according to CIP, with mm measurements converted to inches: Code 7x57 8x57 -------------- Rim Thickness: .0453 .0512 Rim Diameter: .4764 .4705 Head diameter: .4728 .4701 Shoulder dia: .4299 .4311 Shoulder length: 1.7260 1.8190 Shoulder angle: 20.90° 19.10° The 8x57 values were based on the 8x57 IS cartridge data. SAAMI values for the same cartridges differ a bit from CIP values. Most cartridges will have actual measurements less than those listed here. Using the approximate volume values in Ken Howell's cartridge book, the 8x57 case will have about 6% greater capacity. Name? Call it the 7mm Bandukwalla, or 280 or .284 Bandukwalla. With a British accent, it might be the 275 Bandukwalla. --Bob I like the way you think; I'll call it the 275 Bandukwalla Last edited by Bandukwallah; 04/18/19. Reason: Spelling

Re: 8 x 57 Necked Down to 7mm Bandukwallah #13752402 04/18/19
Joined: Jun 2005 Posts: 844 Caroline du Nord B Bandukwallah OP Campfire Regular
OP Bandukwallah Campfire Regular B Joined: Jun 2005 Posts: 844 Caroline du Nord	Originally Posted by BullShooter Here are some maximum dimensions for the two cartridges according to CIP, with mm measurements converted to inches: Code 7x57 8x57 -------------- Rim Thickness: .0453 .0512 Rim Diameter: .4764 .4705 Head diameter: .4728 .4701 Shoulder dia: .4299 .4311 Shoulder length: 1.7260 1.8190 Shoulder angle: 20.90° 19.10° The 8x57 values were based on the 8x57 IS cartridge data. SAAMI values for the same cartridges differ a bit from CIP values. Most cartridges will have actual measurements less than those listed here. Using the approximate volume values in Ken Howell's cartridge book, the 8x57 case will have about 6% greater capacity. Name? Call it the 7mm Bandukwalla, or 280 or .284 Bandukwalla. With a British accent, it might be the 275 Bandukwalla. --Bob I like the way you think; I'll call it the 275 Bandukwalla

Re: 8 x 57 Necked Down to 7mm Bandukwallah #13752670 04/18/19
Joined: Sep 2004 Posts: 1,800 The U.P.'s U.P. BullShooter Campfire Regular
BullShooter Campfire Regular Joined: Sep 2004 Posts: 1,800 The U.P.'s U.P.	Originally Posted by Bandukwallah I like the way you think; I'll call it the 275 Bandukwalla. B- Thank you. Thank you very much! --Bob

Re: 8 x 57 Necked Down to 7mm BullShooter #13752887 04/18/19
Joined: Sep 2010 Posts: 19,179 Southern Arkansas J jwall Campfire Ranger
jwall Campfire Ranger J Joined: Sep 2010 Posts: 19,179 Southern Arkansas	Is that you Elvis ? jwall- * 3100 guy* A Flat Trajectory is Never a Handicap Speed is Trajectory's Friend !!

Re: 8 x 57 Necked Down to 7mm RevMike #13753112 04/18/19
Joined: Nov 2007 Posts: 766 Charleston, SC P PreciousLiberty Campfire Regular
PreciousLiberty Campfire Regular P Joined: Nov 2007 Posts: 766 Charleston, SC	Originally Posted by RevMike Originally Posted by Bandukwallah Do I detect a hint of sarcasm in some of these replies? Nah, couldn't be; it must be my imagination. By my calculations, the 7mm/8mm Mauser (I just named it!) would have about the same capacity as the 7x57 Ackley Improved, or around 61.4 grs water. Contrast that with the standard 7x57 at 55.5 grs, and the 7mm/08 at 52.2 grs. That represents a 10% increase over the 7x57, and 17% increase over the 7-08. Help me out: If what you're proposing is virtually the same as the 7x57AI, then why wouldn't you just chamber a rifle in 7x57AI, use the 8x57 brass for forming (if need be), and be done with it? I'm not trying to be sarcastic, just trying to figure out what's new and improved over something virtually identical that already exists? Right, or he could join the 21st Century and just build a 7mm WSM, short action and all. (I'll be here all night, be sure to tip the waitress.)

Re: 8 x 57 Necked Down to 7mm RockyRaab #13759009 04/20/19
Joined: Sep 2006 Posts: 6,698 Minnesota W whelennut Campfire Tracker
whelennut Campfire Tracker W Joined: Sep 2006 Posts: 6,698 Minnesota	Originally Posted by RockyRaab Prepare to swoon: An 8x57 necked to 7mm Ackley tight neck fast twist heavy bullet 1000-yard one-holer. Did I miss any fads? Did you fit Creedmore in there,? I like to do my hunting BEFORE I pull the trigger! There is only one kind of dead, but there are many different kinds of wounded.

Re: 8 x 57 Necked Down to 7mm Bandukwallah #13759038 04/20/19
Joined: Sep 2006 Posts: 6,698 Minnesota W whelennut Campfire Tracker
whelennut Campfire Tracker W Joined: Sep 2006 Posts: 6,698 Minnesota	I remember Jon R Sundra doing parallel studies on the 8x57. 8x57 JRS is what it shall be named. I like to do my hunting BEFORE I pull the trigger! There is only one kind of dead, but there are many different kinds of wounded.

Re: 8 x 57 Necked Down to 7mm jwall #13760236 04/21/19
Joined: Sep 2004 Posts: 1,800 The U.P.'s U.P. BullShooter Campfire Regular
BullShooter Campfire Regular Joined: Sep 2004 Posts: 1,800 The U.P.'s U.P.	Originally Posted by jwall Is that you Elvis ? jwall- Probably not. Elvis has left the building. --Bob

Re: 8 x 57 Necked Down to 7mm Bandukwallah #13762881 04/22/19
Joined: Nov 2002 Posts: 1,075 Texas T Turk1961 Campfire Regular
Turk1961 Campfire Regular T Joined: Nov 2002 Posts: 1,075 Texas	I don't have a 8x57 but I do have three 7x57s. Does anyone know where I may buy Lapua 7x57 ammo or brass? No, well that is why I am thinking about buying 8x57 Lapua brass and running them thru a 7x57 die. That should work, right? NRA Life Member TSRA Life Member

Re: 8 x 57 Necked Down to 7mm Turk1961 #13763701 04/22/19
Joined: Jun 2005 Posts: 844 Caroline du Nord B Bandukwallah OP Campfire Regular
OP Bandukwallah Campfire Regular B Joined: Jun 2005 Posts: 844 Caroline du Nord	Originally Posted by Turk1961 I don't have a 8x57 but I do have three 7x57s. Does anyone know where I may buy Lapua 7x57 ammo or brass? No, well that is why I am thinking about buying 8x57 Lapua brass and running them thru a 7x57 die. That should work, right? It should work just fine

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