I need some loads that closely resemble WWII loads for

[S.B.]

7.7 Jap and 8mm Mauser, please?
Steve

[Texas by God]

Brass and fmj bullets for both are made by Privi and are for sale at Graf & Sons.

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[bruce drake]

For 7.7 Jap loads, look at 303 British service loads which were 175gr bullets at 2450fps at around 40K PSI. The 7.7 Arisaka was developed basically as a rimless copy of the British cartridge.

For 8x57, The Germans in 1905 converted to a 154gr FMJ spitzer bullet around 2800fps for the Model 98 rifles.

Here are the specs you are looking for with service loads for those two cartridges.

Getting loads to match these velocities with matching weight lead bullets will be very difficult but others on this list may give you a few tricks to match these specific details.

[S.B.]

Brass and fmj bullets for both are made by Privi and are for sale at Graf & Sons.

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I'm a reloader? Don't buy factory much.
thanks, Steve

[Larry Gibson]

7.7 Jap and 8mm Mauser, please?
Steve

Assuming jacketed equivalent loads?

Both can easily be replicated with H4895 powder and commercial bullets that come close to the original weights. Unless original FMJ bullets are found the BC.s pf soft points will be somewhat different. However the 174 Hornady FMJBT and the Sierra 174 gr MK (.310 and .311 diameter) will be closer to the originals BC. Between 39.5 to 41 gr H4895 should find 2400 fps.

The standard German 7.9x57 "S" load using a 154 gr FMJ gave 2835 fps out of KAR 98 length barrels. I duplicate that with the Hornady 150 gr SP (.323) over 49.5 gr H4895. That load runs a measured 50,000 psi in my Yugo VZ24/47

None of the above loads are listed as "max" in their respective manuals.

7.7 Jap was loaded with a 175FMJ at 2400 fps.

[Texas by God]

I'm a reloader? Don't buy factory much.
thanks, SteveThat's why I said BRASS and BULLETS, Steve. Are you not sure if you're a reloader?
If you want Great War 8x57 loads; you will have trouble finding cup base 154gr fmj spitzer fmjs. If you want WWII 8x57, 197gr fmj are common as corn. Like I said Grafs has PPU components to accomplish your goal. Larry has the powder and charges outlined for you.
Best, Thomas.

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[S.B.]

TbGf, I already have brass(converted from 30.06 both) and bullets just needed load data for both?
Steve

[Texas by God]

Sorry I'm so dense. Here you go. Old loads for old cartridges using old powder from an old book. I would use the max data for 225gr to load 197grs in the 8mm.
I hope I helped, Steve.
Thomashttps://uploads.tapatalk-cdn.com/20180102/c37676e9517eadd92ed0d476326297fb.jpghttps://uploads.tapatalk-cdn.com/20180102/2a69f68b951af9a1d3386c9f07b7b8ca.jpghttps://uploads.tapatalk-cdn.com/20180102/2655a52c81b80262b7724c2a12370458.jpg

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[S.B.]

Yes, I own the same Lyman load book but, I to replicate actual military loads?
Steve

[Texas by God]

Find the load that gives you 2450 fps with the 198gr in the 8mm and 2900 fps with the 150 grain. In the 7.7 you're looking for 2400 fps with the 174gr bullet. You'll need a chronograph or it's just a guess. Two 98k rifles with the same load will give different velocities- sometimes quite different. The above parameters are what you asked for,though.
Good luck.

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[azrednek]

I can't comment on specific loads for the 7.7 and 8MM. If you come across an older edition of Frank Barnes' Cartridges Of The World. Barnes often commented giving suggested loads to duplicate the military ballistics. The newer editions published after Barnes passed away no longer give any loading data.

I used to load and shoot a lot mil-surp rifles back in the 70's. I don't want to guess at the charge weight but best I recall IMR 4895 was the powder used by myself and shooting bud's for most of the military cartridges. Our goal was to develop loads for long range that followed the military sights. There was one guy in our crowd that used Winchester 748 and 760. He shot as well as the rest of us.

[scottfire1957]

Google or Bing were of no help? I mean, the specs for those loads are at least 70 years old.

[Texas by God]

1970's Portuguese FNM surplus 8x57 198gr fmj chronographed an average 2450 fps from a Gew98 sporter and over 2500 fps from a Hakim. Turkish 1940's 154 gr fmj went 2900+ fps.
I never had surplus 7.7x58 to clock but I loaded 174 gr bullets to 2400 fps easily in the 99 I had at the time. Load to these specs and adjust your sights.

[Ronald]

Just curious.
Why are duplicating military loads EXACTLY of such importance ?
Given how coarse military sights are, any load that uses essentially the same bullet design at the same velocity should replicate the OEM load for any practical application.
If you have a type 92 or an MG42, exact duplication to shoot at 1000 yards might mean something, otherwise ?????

[S.B.]

Just a personal preference. How else would someone compare WWII weapons, today or care what someone else prefers? I'm not really interested in reinventing the wheel.
Steve