100-1000 USD or more depending on specifics.
Caliber is .243, buy ammo in .243.
100-1000 USD
Well, no.... not if the receiver is chambered for 30-06.
The twist rate in a Winchester 670, 243 caliber is 1:10.
Since 1921 Remington has date stamped the barrel you can find the details/table on the Remington Society of America under the Manufactured Date link.
100-1000 usd
A 243 calibre rifle is Just that. The bore (internal measurement of the barrel) is 0.243 of an inch in diameter.
50-350 usd
75-600 usd
Remington 700 .243 twist rate is: 1 in 10" you can google it like I did.
1/10