First of all, I am one of the odd ducks here at long range hunting.
This 7mm Dakota is chambered in a Remington XP-100 center-grip specialty handgun. Kirby Allen (AKA "fiftydriver") put this jewell together for me.
This has a barrel length just a smidget under 18", with a Lilja 1-7 Twist. A 1-7 is not required for the 200 WC, but we did not know that for sure back in the day when it was put together. BC for my MV is .800
It does real good accuracy wise and on game.