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Actually 2800 is normal in the 280 if you load it to capacity. SAAMI specs are more attributed to the semi auto Remington it was introduced in. If you push it to the pressure limits of a 270, 58,000 increased to 61,000 psi that is.

The 7mm-08 in a 24" barrel comes in at just under 2800, more like 2750. The 280 Win in factory loads are not really different than 7mm-08 given the same length barrel. But at the higher pressure they will run around 2900 fps with a 150 grain.

7x57 simply falls in between.

And we still are thinking its needed to get that last 100 or so fps out of something... it simply is not.

I don't even push my 458 bear loads and I"m guiding and a few folks lives may depend upon my loads... its simply not needed.

There are things we hot rodded over the years. To win paper matches.

On game I've never hot rodded a round ever. And its never came back to haunt me either.

LOL.

I could just board up the front door, I suppose. But life would get pretty boring, and far too quiet.

He's a good guy and I enjoy knowing him, even if he's not a gun expert.

If someone argued with a load book fundamentalist, which one is the fool?

Hilarious!

Actually don't look at American data. R17 is the same as Swiss RS60. Made by Nitrochemie.

7x57 is one of the best Whitetail rounds in existence.

I have pressure measuring equipment, as well as a chronograph. And I have a 7x57 on a modern Zastava Mauser action.

The gas in the chamber cannot read the head stamp on the case.

The case head structure of 7x57 is identical with the 308, 270, and 30-06.

A cartridge case, barrel, and receiver design that will tolerate 62 KPSI from a 308 will also tolerate 62 KPSI from a 7x57.

In a modern action in good condition, loading the 7x57 to modern pressures is not hot rodding.

My standard 7x57 load is a 162 grain bullet at 2762 FPS and measured 56.1 KPSI pressure. That is nearly 6 KPSI (10%) below the maximum for a 308, and really quite conservative.

It's well above "load book" data, centered around the anemic pressures of the x57 (50K), but very doable in a modern action (65K).

QL calculates 150gr Nosler BT in a 24 inch barrel @2800fps to be about 62K psi.

And the rifle is happy with that. No indications of high pressure and accurate. I use the Winchester 150 grain sometimes.

"Is 2800 pushing the 7x57 to the edge of its capability with a 150? Never worked with it."

I don't think so. I've run the 150 gr. Nosler partition to 2900 FPS and brass life has been good. IIRC, Mule Deer said that 2800 FPS was reasonable in a modern rifle and that's most likely the level I will load to.

I have three rifles chambered to the 7x57, a Winchester M70 Featherweight push feed, a Ruger #1A and a custom built on an FN Mauser action. The original chambering for the FN was the .270 Win. BTW so should be appropriate for the 7x57.

Most load work up has been done with the M70 FWT with some tried in the Ruger. The Mauser on the other hand has been problematic regarding pressure. For one thing the Mauser's chamber is at the very minimum AKA very tight. So titght that the pressure ring is almost not there. Chambering at the neck is sufficiently loose that a bullet slides easily into the fired case so that's not where the problem lies. Damned if I know.

I did an interesting experiment. I looked up the average charge for the 175 gr. round nose bullet to duplicate the original 1893 load (2300 FPS) and loaded up five rounds for each rifle. The M70 and Ruger ran 2320 and 2330 FPS but the Mauser was close to 2450 FPS. All three sets of loads used the same powder charge.

I just might have to change powders for the Mauser The M70 and Ruger are happy with Rl17.

If I hadn't gotten messed up in a vehicle crash I'd have found out just how well the 7x57 would've worked on a cow elk. The crash was just four days before my scheduled date to leave for the hunt.
Paul B.

Indiana never a rifle deer state until recently.
But with good manufacturing jobs a lot of gun nuts that did hunt elsewhere.
I've heard some stuppid chit at various ranges/clubs.

Used to be you let your target talk for you.
With smart phones now, if the target doesn't shut em up, show em the dead critters.

the rimmed version of the 7X57mm was the 7X57mmR.