Yes, the Timney Triggers 520CE-A Calvin Elite Custom Remington 700 RH Trigger will work with a Bergara B14R. However, the manufacturer does state this, "The Bergara rifles use a heavier firing pin spring that limits pull weight adjustability."
Yes it will work. The action is the same as B14. Stoke is just a chassis, thinner barrel, smaller knob etc.
The Timney Triggers 520CE-A Calvin Elite Custom Remington 700 RH Trigger will not work in a Remington 770. Timney currently does not have a trigger for that rifle.
Yes, the Timney Triggers 520CE-A Calvin Elite Custom Remington 700 RH Trigger will replace the existing X-Mark trigger on your Remington 700 rifle without additional modification.
Yes, this will be compatible.
Yes it will be compatible with a Remington 700 LA.+
YES, however the knurled rod that is provided in the kit may hit the trigger guard. Any of our Remington 700 replacement triggers will work in the Magpul Hunter stock with the exception of the straight shoes, they are too long and will hit the trigger guard.
Timney does not specify how much the pull weight is changed by the Bergara spring, please contact them directly for further assistance.
The pull weight is adjustable.