I am wondering if there should be any difficulties with rebarreling a FN Mauser made for a 270Win to 7x57?

I am thinking of feeding etc..?

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Should work just peachy. Pull the fire array out of it and run some 7x57 through it before you do anything just to be sure that no one has putzed with the rails.

None at all. The short, little 7mm will feed even better than the 270.

should work .. might need a mag block in the rear.. 7x64 would fit perfectly, btw ...

Will work without any mods

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Will work without any mods

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Originally posted by ramrod340:

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Will work without any mods

Providing that the knucklehead who installed the 270 barrel didn't modify it. That's what function test dummies are for. The knuckleheads are everywhere! And they are very busy.

(As I adjust my tinfoil hat)

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Providing that the knucklehead who installed the 270 barrel didn't modify it.

So what do you guys call bubba's north of the border?

Run some 7x57 thru it and see if it feeds, if it will pick them up your good to go and it should..they won't nor do they need to go all the way in, just see if they will slick in the chamber a ways.

You could rebore and set the threads back and rechamber using the existing barrel as an option. Might upset the barrel bedding and need glass bedding, again this depends on the rifle, you many not want to do that, but if you rebarrel be sure and have some smith with a tracer on his lath to match your bedding...Dennis Olson in Plains, Mt. is good at this for what its worth.

You can't re-bore a 270 to 7mm; the groove diameter on the 270 is .277 and the land diameter on the 7mm is also 277; there is no metal left to ream and clean up. At least I don't for that reason.

Allrighty..

Tell me.. I am rebarreling a HVA 640, from 8x57 to 6,5x55.

When I am finnished with the 6,5x55 barrel.. in a few years. I want to rebarrel again to 7x57.

Does the Gunsmith to have to alter anything on the action / feed lips to have the 6,5x55 feed perfectly?

I am changing the 8x57 barrel because of rust and pitting.. and 6,5x55 ammunition is cheap.

In the USA? Maybe a re-barrel to .280 Remington if you want a 7mm?

No. Europe. So would rather choose 7x64 Brenneke.

But, building a open sights/ peep sighted rifle.. and want a classic cartridge.

Europe. Where I live!

7x64 is "classic". dates, as you know, from 1917 so only, what, twenty five years after the venerable 7x57! And should feed better throug a magazine set up for 270 WCF.

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Originally posted by Nortman:
No. Europe. So would rather choose 7x64 Brenneke.

But, building a open sights/ peep sighted rifle.. and want a classic cartridge.

You will have absolutely no problem. I have one which has been a 270, a 6.5x55, a 30/06, and a 25-06 and I switch it back whenever I want to. Feeds every cartridge so slickly I almost can't believe it's loaded. Regards, Bill.

Well, the question has changed

Firstly I found a 270 Win, but turned out not to be original.

Then, now, I found one in 8x57 with bad barrel, so I am changning that one out to a 6,5x55. And, maybe someday, rebarreling into a 7x57.


Now, just forgo the first, orignal question.


The question now is, would a 8x57 easily rebarreld to a 6,5x55, without alterations to the action / feed lips.

I did one from 257 Roberts to 35 Whelen. There was a magazine filler block, I removed it. I installed a full length follower. I do not recall a bolt stop being modified. Worked fine. I think they only used one action an put a filler block for shorter cartridges. Mine was early post war with the stepped barrel.

DPCD, you are correct, that one got by me, I know better!

All that aside, I prefer a .270 or 06 length magazine for a 7x57 so that I can set the bullets out, get more powder space and higher velocity with equal or even less pressure using H-414 powder as a rule...This procedure requires a long throat to match the magazine, but it will certainly shoot short ammo such as factory stuff as well..

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The question now is, would a 8x57 easily rebarreld to a 6,5x55, without alterations to the action / feed lips.

I am not a Gunsmith but on a M96 or a Husky 640 this is not an issue. I bought a Husky 640 that was an 8x57 originally but the seller had installed a 6.5x55 barrel on it, I shot it that way for awhile and it fed functioned perfect, then I had it re barreled to .257 Roberts, also feeds like butter.

Sure you can rebarrel and FN or a 98 Mauser to about any caliber on the 06 case and it has been done for most belted magnums and even the 404 or 500 Jefferys although I recommend staying with those rounds on the 06 case. with the exception of the 9.3x62 or 64 as they are fine with that action..even a .338 Win is sutible for a Mauser...


Keep in mind that the FN is an FN and a Mauser is a Mauser, they are not the same action, close, but no ceegar! There is no such thing as an FN Mauser..a little known fact however.

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Tell me.. I am rebarreling a HVA 640, from 8x57 to 6,5x55.When I am finnished with the 6,5x55 barrel.. in a few years. I want to rebarrel again to 7x57.Does the Gunsmith to have to alter anything on the action / feed lips to have the 6,5x55 feed perfectly?I am changing the 8x57 barrel because of rust and pitting.. and 6,5x55 ammunition is cheap

He's not talking about a 98 or an FN he's asking about a Husky 640 (or a 96 Mauser). The question changed mid post.

FN made military Mausers for Yugoslavia, Venezuela and others. They also made a commercial large ring and small ring that carried the Browning name and if memory serves early Sakos used FN made Mausers.

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Keep in mind that the FN is an FN and a Mauser is a Mauser, they are not the same action, close, but no ceegar! There is no such thing as an FN Mauser..a little known fact however.

I have FN made SAKO action. It has C-ring like ordinary Mauser m98 action and all Mauser 98 parts fits to it without any alternations so why not say FN Mauser action, same way as DWM Mauser ?