receiver threads different on new FN winchester model 70

[buckbrushoutdoors]

I'd like to re barrel a new FN winchester m70 with a barrel off of a older style model 70. I was told the threads may have changed, and this wouldn't be possible?
Any insight would be great.
Thanks

 

[guntech]

Push feed model 70's have different barrels than controlled round feed 70's.

 

[Dogleg]

The new ones are 1-28, 1.05 tenon. I had mine off the other day; it took a couple of good wacks but it came.

 

[gunrunner8]

The new ones are 1-28, 1.05 tenon. I had mine off the other day; it took a couple of good wacks but it came.

I newer saw bolt action rifle with barrel tenon threaded with 24TPI, newer mind 28TPI.
Are you sure of your info? b/c I think it's a misprint.
1/4" dia bolt has fine thread of 28TPI, compare that to 1-1/16" dia tenon....

 

[double gun]

I assume he meant 18 tpi

 

[Dogleg]

No, I meant 28 TPI. Its such a fine thread that it looks stupid but that's what it is. The old one is 16 TPI.

If you go on Shilen's site for their pre-threaded barrels you will see where they say to specify whether you want 16 TPI 28 TPI. The world, she's achanging.

http://www.shilen.com/ptcBarrels.html


Or just google Winchester 28 TPI barrel thread.

 

[double gun]

Yikes, that is different.

 

[280 ackley]

thats nothing.the new brownings are 1" 32 tpi.

 

[BigUglyMan]

I'd like to re barrel a new FN winchester m70 with a barrel off of a older style model 70.

Just curious why you would want to attempt this, notwithstanding the fact that the barrel is threaded differently. What were you hoping to accomplish?

 

[Dogleg]

Caliber change?

 

[buckbrushoutdoors]

I was going to pick up a new winchester crf action and install a barrel off of push feed 35whelen. But I was unaware of.the different specs between the two.. so now I will either do a re barrel with a new pipe or bore out a 3006 to 35

Thanks for the info. Always learn something new

 

[gunrunner8]

thats nothing.the new brownings are 1" 32 tpi.

Unbelivable - what next? a new Mauser with tenon threaded with 48TPI?
I wonder what would be the reason for useing such a super fine threads?

 

[280 ackley]

thats exactly what i thought.it definitely tightens your sphincter fitting stainless bbl to stainless action with interference fit threads! lmao the use of antisieze highly recommended.