+P ammo in pump rifle?

[mljdeckard]

Going through my dad's stuff, I found a few boxes of +P ammo for his old Remington 760 in .257 Roberts. The rifle went to my sister, and I am scratching my head about whether it's a good idea to use this ammo. If it was a bolt rifle, I would just not worry about it. But this rifle uses the turning bolt with locking lugs, and I have always felt it was a bit rickety. (I have advised my sister to get it looked at.) I told her not to shoot this stuff until I did some homework. Am I just being superstitous?

 

[rcmodel]

The +P .257 Roberts is intended for use in modern bolt-action & single-shot rifles.

It is not intended for pumps,semi-autos, or older 93/95 Mausers.

Standard pressure .257 Bob is 45,000 CUP.
+P is 50,000 CUP.

rc

 

[mljdeckard]

That's kind of what I was thinking. I think I'll pull the bullets and start over.

 

[rcmodel]

I don't think it would actually hurt a 760, but you might have extraction issues, or not?

They were chambered in hotter factory calibers with the same head size throughout the production history.
.257 Roberts – 1954 = 54,000 & 58,000 +P.
.30-06 Sprg. – 1952 = 60,000 PSI
.270 Win. – 1953 = 65,000 PSI
.308 Win. – 1957 = 62,000 PSI
.280 Rem. – 1958 = 60,000 PSI
.243 Win. – 1968 = 60,000 PSI
6mm Rem. – 1968 = 65,000 PSI

In fact, the more I think about it, the more I would try it!
At best it will work, and at worst they will be hard to extract with a pump action.

rc

 

[jmr40]

Never heard of anyone having issues with any of the hotter ammo in anything other than semi-autos. Like RC said, I doubt it would be dangerous, but since pumps don't have the leverage for extraction that bolt guns have you might have extraction issues, might not.

 

[R.W.Dale]

Seeing as these rifles were chambered for 270win from the get go you certainly wont cause one the slightest distress with any factory 257 load

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[T Bran]

I've run some pretty hot stuff in my 760 30-06 never an issue shoot it up reload and repeat as desired this is a tough action. You wont hurt it with any factory loaded ammo never had an extraction issue in 30+ years of use.
Luck
T

 

[mljdeckard]

Well, I'm still thinking, (since I also inherited a pile of reloading gear,) I will pull them and reload them. The rifle needs to be looked at anyway.

 

[45crittergitter]

I agree with rcmodel. I've had long experience with Remington 760s and the only issue I'd worry about is if you have a rough or rusty chamber, which will inhibit easy chambering and/or extraction.