Re: Depth Question
It is a very reasonable amount of jump - which is normal in factory chambers.
Since the 710 is a low end rifle, and not a match grade action, don't worry about it - if you want something better, you will have to start off with a custom barrel that is throated to match the load you want to shoot.
You may be able to remove the filler in the magazine box and get more room, but I doubt that you will see any improvement.
Here, kitty kitty kitty.
LRH member #23