If you know the case volume, it'll work with anything.

That's all fine and well, but I can kill anything in North America with a 200gr partition at 2700fps.

One thing I noticed, and it's probably a typo.
"IMR 4895 96.4% load den. 96.4gr 2697fps 100.0% prop burn 60000psi"
How did you get 96.4gr of anything into a standard 7.92x57 case?

How about some RL-15 data please? I only use one powder, it's a sure way to avoid using the wrong one in the wrong gun.

I settled on RL-15, as it seems to work ok for most of what I reload (7x57, 8x57, 7.65x53, 9.3x62, 416 Taylor). I also load in the mid-range, not near or at max. I'm not the type who tweaks for accuracy in each gun either, just a load that performs decent -- I have several guns in most of those calibers, most w/ open sights. Most shoot better than I can anyway!

Todd

WildCat,

I had the throat of my m98/29 Persian Mauser lengthened 0.300" to allow for seating long 220 grain Hornady bullets. May be a viable option to get extra case capacity for slow powders, increase velocity while keeping pressure down.

Since there has been a lot of interest in rechambering the various military M98 Mausers both the "intermediate length" M48 Yugos and the "standard length" actions such as the K98, VZ 24 etc, I have worked up some "Quickload" data for some various options.



For "intermediate length" actions, such as M48 Yugo, VZ500, Herters U9, etc, the only viable option (other than loading the 8x57 to modern pressure) would be the 8mm-Steyr A.I. The 8mmWSM would fit into these actions, but the gunsmithing required would be extensive, including the possibility of barrel replacement being necessary, so I haven't done any "Quickload" calculations for the 8mm WSM.



For "Standard length" actions, such as K98, VZ24, etc, any of the options could be applied.



Pressure levels:



Pressure levels for the 8x57 and 8mm-06 have been kept to 60000psi range to stay near the case design pressure range.



The Ackley Improved versions have been boosted to 63000psi due to the fact that the reduced case taper and 40* shoulder will allow good case life @ these elevated pressure levels. There is no "Standard" version of the 8mm-Steyr as the pressure level of the parent case design is 62366psi. That is very close to the 63000psi level of the A.I. version. Loading a "standard" version compared to an A. I. version seldom yields a substansial velocity decrease. The elevated pressure allowed for by the altered case taper and shoulder angle will yield a few more fps, but the main benefit is the greater case life. It could be argued that perhaps the 8mm-Steyr A.I. could be loaded to 8mm Rem Mag pressure of 66717psi but I think that 63000psi is a realistic ceiling considering that the CIP pressure for the 8x68S is 63816psi. 63000psi will be used for the 8x68S also bearing in mind that we are not @ the max, but near it.



COL:



COL for 8x57 will be 3.150" for the 180gr Nosler Ballistic Tip and .025" less for the 200gr Nosler Partition. These lengths have been about .010" "off the lands" for the 180gr BT in the two K98 barreled action I have as well as a K98 replacement barrel that I got from Numrich. My RCBS dies in both 8x57, 8mm-06 A.I. and my Redding 8x68S dies seat the 200gr Par .025" shorter COL. This shorter COL gives about the same "off the lands" dimension for the 200gr Par. These COL's will also work well for the "intermediate length" actions.



COL for the 8mm-06 and the 8mm-06 A.I. will be 3.34" with the 180gr BT. (standard "06" length) It is quite easy to lengthen the internal magazine length of a K98 to this length with nothing more than a file and perhaps a little work on the bolt stop. Again the 200gr Par will be .025" shorter @ 3.315"



COL for the 8mm-Steyr A.I. will be 3.20" with the 180gr BT. This is about the maximum length that will function through the "intermediate length" actions. The 200gr Par will be .025" shorter @ 3.175"



Col for the 8x68S with the 180gr BT will be 3.525". This is longer than the CIP standard of 3.425", but this length represents what I think is the maximum practical length for this cartridge in the K98 action. An interior magazine length of 3.585" can be attained by lengthening the magazine .150" @ the rear and .120" to the front. Removing .120" from the feed ramp will still allow more material than the "intermediate length" actions have. The COl for the 200gr Par will be .025" less @ 3.50". These magazine length will require considerable "surgery" but are "doable" with some skill with a TIG welder. These longer than CIP lengths will minimize the "intrussion" of the bullet base into the "boiler room". Indeed the 200gr Par will only intrude .045" beyond the neck @ 3.50" COL.



These Quickload" predictions will be listed by the "incremental" increases in MV for the various chamberings. I will list all 180gr loadings for all chamberings so that the incremental increases in MV can be compared. The 200gr Par predictions will be listed likewise.



Muzzle velocity will be listed in decending order within a chambering. As I am in "edit mode", and can not use the "list" function, the list will be contained in a following post titled "Hotrodding" the 8x57 M98 Cont.

The other day as I was setting up at the range, another fellow was shooting what looked like an M48 that immediately got my attention by emitting a fireball and blast about like my .300 Weatherby Magnum. He was shooting old milsurp ammo with copper-nickel jacketed bullets that I later identified as Turkish, 1942 production. (I've got the cases.) The primers showed slight cratering but weren't flattened excessively, and I don't see any of the usual signs of excessive pressure on the cases, but those things must've been hot! The fellow was an unsophisticated shooter who knew nothing about the gun except that it was a Mauser and boasted about how he'd never touched the sights but it was always right on at 50, 100, 200 or 300 yards!

Crazyquik:

I sent you a PM a few minutes ago. Did you get it?

My computer "spit up a hairball" when I submitted it.

Some of the Turkish ammo is known to be hot.

A gentleman who made a nice webpage chronographed some, '42 and '51 vintage, pushing 154/156 grain bullets at over 2900 fps from a 29" barrel.

In a 24" barrel he got ~2775 and ~2750.

I shot about 100 rounds of milsurp ammo in my 1940 Turk last weekend, and got one sticky bolt lift. I believe this was from a 1944 Czech-produced-under-German occupation load. The brass had a verticle discoloration near the base of the cartridge. Primers all looked fine.

I don't mean to cry wolf, but shooting full loads in some of the old mauser 98's is a cause of concern to me. I just ordered the new Remington Classic in 8x57. That should take the worry out of being close. I love the cartridge, just don't trust some of the old rifles. Let the good times roll. Best wishes.

Cal - Montreal

I trust a $50 M98 more than I would trust ANY Rem 700!!!

wildcat junkie,

How do you get Quickload to estimate 8mm-06 Ackley?

It didn't come in the can with my program





Major Caliber,

My Rem 700 may not be as safe as my '98 Mausers, but it is the Sako extractor modifications that scare me.