'64 Win. M-70.

[Nomadhunter]

I figured posting my inquiry on this forum I've a better chance of knowledge, prior to shooting loads.

1964 Winchester; Model 70, chambered for .270 Weatherby Magnum.

Twist ratio?

Extra "good to know" information?

New to this site and the gunsmith of initial choice is several miles away.

 

[Ggmac]

Original barrel?
Are you sure it's a pre 64 or just control round feed . What's the ser # , a pre 64 would be 6 digit with the first 3 being 581 xxx or less .

 

[Ggmac]

Win wasn't available as a factory chambering in 270 Weatherby , as best I can remember , a lot of smiths were Rechambering the 270 to Weatherby mag 270 . Others replaced the barrel in the Weatherby chambering . How long have you had the gun , have you fired it ? Is the barrel blued and re stamped as to calib. Lots of question I know but necessary .

 

[Gundoktr]

Win wasn't available as a factory chambering in 270 Weatherby , as best I can remember , a lot of smiths were Rechambering the 270 to Weatherby mag 270 . Others replaced the barrel in the Weatherby chambering . How long have you had the gun , have you fired it ? Is the barrel blued and re stamped as to calib. Lots of question I know but necessary .

He didn't say it was a pre-64, said it was a "64

 

[Cold Bore]

Twist ratio?

Since the originality of the barrel may be in question, just do the "push a snug patch on the cleaning rod through the bore while you measure the distance required for one complete revolution" technique, and you'll know for sure.

 

[Ggmac]

Completely correct , I ve been a bit off , sorry .

 

[Nomadhunter]

Since the originality of the barrel may be in question, just do the "push a snug patch on the cleaning rod through the bore while you measure the distance required for one complete revolution" technique, and you'll know for sure.

too darn easy...why didn't I dink of dat... thanks man.