T/C Contender would also be my choice. Match Grade Machines (MGM) is a great place to have a quality barrel made. They will make it any length you need.
As to killing deer with a 45 ACP about 38 years ago I fed my wife and I with an old WWII Colt 1911A1 using my home cast 200 gr SWC and 7 grs Unique. We were pooooor and if I did not shoot it or catch it or raise it we did not eat it. I had a friend that had the loading press and dies and the RCBS bullet mold for 45 ACP that let me use them. For less than 5 cents I could put a deer in the freezer with that old Colt. I kept my shots under 50 yards and double lunged them. 45 cal. hole in and out and it let the air out of them quickly.