Depends which 7mm your talking about. The only 7mm I know of that has a larger case capacity than the 300 wby mag is the 7mm Remington ultra mag or 7mm rum
NO!!
no!!!!!!!
No. Two entirely different cartridges.
DO NOT DO THIS!!!! The OAL on the 7mm Mag is 2.5 inches and the 7mm Weatherby is 2.55 inches. SInce they headspace on the belt, and due to the freebore in the Weatherby, the 7mm Mag may chamber in the Weatherby. SAAMI lists the 7mm Mag/7mm Weatherby as an unsafe combination one will probably chamber in the other. DO NOT SHOOT UNLESS YOU ARE SURE YOU HAVE THE RIGHT AMMUNITION!!!!
Yes
No.
no even though the projectile (Bullet) is the same diameter and weight, the cartridge cases are very different, the 7mm rem mag is a belted magnum, and is larger in length and diameter than 7mm mouser cartridge. in other words the 7mm magnum is too big to fit in the M24's chamber
100-300
DO NOT ATTEMPT TO DO THIS!!!!!!!!!!!!!!!!!!!!!!!!!!!! DANGER, DANGER, DANGER!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! UNSAFE, UNSAFE, UNSAFE, UNSAFE
NO The ammunition must match the marking on the Barrel exactly. If you do it is an accident waiting to happen.
You will have to define what "accurately" means.