Yes.
The 7mm Ultra Mag is a Remington cartridge. THE model 70 is a Winchester rifle. Winchester does not chamber the Model 70 For the 7mm Rem. Ultra Mag cartridge.
Proofhouse.com has Winchester sn data
The MAKE is Winchester. That is the company that makes the rifle.
9.5
The answer to this q? is 1-9"
1968
250-600 dollars.depending on overall condition.
TRY THE WIN COLLECTORS SITE
The G prefix to your serial number shows that it is a model 70 Winchester rifle.It should say this on the barrel of your rifle.
300-700 USD
At least 400 usd
I'm not sure if that chambering was in regular production,but even if it wasn't, Winchester bent over backwards for their customers and would fill special requests.The quickest way to tell for sure is to take a close look at the barrel of the gun.If it says Winchester model 70, New Haven, Ct. AND 7mm Weatherby on the barrel, it's factory issue.