Re: new project
The 6-284 has a little more case capacity but you're shooting larger bullets in the 7x57. Never shot the 7x57 but I'm guessing the recoil is going to be close between the 2.
The 6-284 is going to be a little harder on the throat than the 7x57 and 243, but it's a sweet little number.
You will never know how much it has cost my generation to preserve your freedom. I hope you make good use of it.
~ John Quincy Adams