The price or value depends on the condition, model, age and collectability.
You have not provided any of this information so the question cannot be answered.
899.00
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.
Try eBay or gunbroker.com
i cant get the mag release back in ?how does it go in?
You will have to state your intended use.
100-400 USD
A Remington Model 760 magazine "CAN" be used in the Model 742 Remington if they are the same caliber. The 742 rifle is designed to hold the bolt back after the last round is fired. Along the left side of the 742 magazine there is a bolt release button that will allow the bolt to move forward after a full mag. replaces the empty one. The 760 mag. has the same magazine body but does not have the bolt release button so the bolt will not move forward until the mag. is removed.
Check you barrel code on the Remington Society of America... http://remingtonsociety.com/rsa/questions/barrelcodes
You will have to call Browning.
284
6 t0 7 hundred dollars
100-500 or so