pacecars
(.300 member)
02/03/20 01:32 AM
Brno 22F 8x57mm

I am buying a Brno 22F in 8x57mm and the original intention was to have JES rebore it to 9.3x62mm but now I am not sure and i am considering leaving it as is and see how it shoots. Another idea popped up after perusing Taylor’s African Rifles and Cartridges. It is a round I have always wanted to try and would scratch one off the bucket list and that is the .318 Westley-Richards Accelerated Express. I don’t know if it would clean up the chamber and how the Reboring would work. The 8x57 and .318 appear to be pretty close in performance and the .318 may be more of a pain to find components for but it has always fascinated me. Anyone have any experience with the 8x57mm hunting?


szihn
(.400 member)
02/03/20 03:54 AM
Re: Brno 22F 8x57mm

I own both and also two 9.3X57s and one 9.3X74R. Of the 4, I have killed the most game with the 9.3X74R, but it's ballistics (as I load my owe ammo) are identical to my 9.3X62. Same 286 grain bullets at 2400 FPS from both my Mauser and my Ruger #1.

I have also used my 8X57 quite a lot.

If I were in your place, I'd leave it as is if it still shoots well.

The 8X57 doesn't get a lot of ink in our American magazines, but I can say from experience, using the correct bullets, it has no issues at all and I have killed 9 deer, 4 antelope and 2 elk with mine. For elk you want a 180 grain or 200 grain bullet of tough enough construction to exit and for deer and pronghorn antelope I have used the 170 grain SST by Hornady which out of my rifle is so accurate it's shocking. 200 grain Partition "only" shoot 5/8" but the SSTs shoot so tight it amazes me. The SSTs are not all that good for deep penetration, but perfectly good for game up to about 250 pounds.
Here are 2 pictures of targets shot with the least accurate load I use in my 8X57 with 200 grain bullets. (elk are big targets however) There were practice ammo loaded with 200 grain Speers, but the 200 Grain Noslers also shoot exactly the same. The 170 grain SSTs shoot about 1/3 this size.
PC070001 by Steve Zihn, on Flickr

PC070002 by Steve Zihn, on Flickr



The 9.3MM is a heavier hitter, but is also very simple to build from any GEW length Mauser or any 30-06 length action by a simple re-barrel job. I have done several of them for customers and the cost is fairly low and labor is fast and easy. PM me if you'd like to know more.

The old Mauser in your picture is classic, and if the bore is good I'd leave it alone. If it ain't broke, don't fix it.

Anyway...........your gun, so do what makes you happy.

But consider that if you re-bore it then it's not original anymore. That won't be a strike against it if the bore is bad now, but if good you stand to take a step backwards doing such a modification if the bore is still good.


pacecars
(.300 member)
02/03/20 04:21 AM
Re: Brno 22F 8x57mm

Thanks. It has a Jaeger side mount on it with the stock relieved for it and a Lyman receiver sight that has been inletted into the stock also so the collector value would be gone already I would think

pacecars
(.300 member)
02/03/20 04:28 AM
Re: Brno 22F 8x57mm



xausa
(.400 member)
02/03/20 10:43 AM
Re: Brno 22F 8x57mm

This is my BRNO with the same kind of sighting setup as yours. I wouldn't change it for the world. The side mount leaves a clean receiver top when the scope is removed, nothing to interfere with the receiver sight, and the Lyman 48 is a top grade receiver sight. Mine has a carbine length barrel with a normal stock and is caliber 7X57. My side mount is a Griffin & Howe, but the Jaeger leaves little to be desired.



DarylS
(.700 member)
02/03/20 12:05 PM
Re: Brno 22F 8x57mm

VERY nice rifles, gentlemen.

JDL
(.300 member)
03/03/20 12:36 AM
Re: Brno 22F 8x57mm

Nice rifle and like Steve says there is nothing wrong with the 8x57 as long as it shoots well.

pacecars
(.300 member)
03/03/20 12:06 PM
Re: Brno 22F 8x57mm

I think I will see how it shoots and decide from there. I think I will replace the scope with a 6x42 Meopta with a #4 reticle though

DarylS
(.700 member)
03/03/20 04:54 PM
Re: Brno 22F 8x57mm

I did have an 8mmm/06 for a while. That was an excellent shooting rifle - of course, I sold it to my friend, Keith.
It did just over 2,900fps with 180's.



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