Live Secret, Live Happy
I was studying gunsmithing at LCC Susanville.I'm not much of an AR fan so can't help you there. But like a few others I would recommend the 44 mag. I have killed one deer with mine and seen several others killed with a 44 mag by my bud. With soft point 240gr bullets it destroys a deers insides. Just about like a bottle neck rifle round. It is impressively effective round. More than you would think for a pistol caliber rifle.
Hick I like what you did and would like to do the same to my 44 mag Marlin. Did you do the work yourself or did you have someone do it for you? If someone did it for you please list who it was. I may have that done to mine.
The Marlin was my project for "Cowboy Longuns". I purchased the replacement barrel from Numric. https://www.gunpartscorp.com/products/453840
I Altered the feed ramp my self in about 10 min using a dremel. I also own a 44 mag throating reamer.
This allows me to load to the max oal that will fit in my Redhawk, and run them in all my guns.