They made them in four calibers. 25 Remington, 30 Remington, 32 Remington & 35 Remington. The 25 & 32 are obsolete, the 30 was still available in the 80's & the 35 is still available at your larger sporting goods stores. There are dozens of custom reloaders that will still supply ammo for any of these calibers.
Remington's web site has a good model history section that will assist you.
A Remington Mod 8 in 95% conditiion is about $500.00
Yes.
The value of the Remington Model 8 varies greatly with its condition. On average, this gun sells for about 400 dollars to about 1100 dollars depending on that condition.
100-1000
Remington's web site has a section with history on each of its products.
I think your Remington Model 760 (there were other models also called Gamemaster, but not in 30-06) has a magazine capacity of 4 cartridges.
There is no Remington Model 35, certainly guns produced in CALIBER .35 Remington but lots of different models. I would suspect one of the most popular would be a model 8 or possibly a model 14 or 141. If it's a Auto it's probably an 8 or 81, if a pump a 14 or 141, off hand I can't think of other .35 Remington firearms.
Standard grade: $175
6mm Remington twist rate is 1 in 9, 244 Remington twist rate is 1 in 12. The 1 in 12 twist will not stabilize long 100 grain bullets while the 1 in 9 twist will.When the the caliber .224 Remington's name was changed to 6mm Remington, the twist rate was changed.
1908
Yes, I just bought one