Punchin Paper-Sheffield, what kind of rifle is your 45acp?
I had this put together about 20 years ago. I was inspired by the experimental .45 ACP O3 Springfield that appears in Hatcher's Notebook. The .45 ACP cartridge case is identical to a .30-06, 8 mm, etc. at the base. So, I acquired a BRNO vz24 action, a 25 inch Douglas .45 ACP barrel blank (intended for a smith to make several pistol barrels from), a Choate stock, Burris 2.75X Scout Scope, a Burris scout mount, and sent it all to Broad Creek Rifle Works. He threw in a sweet Timney trigger and turned the bolt handle down.
I had several ideas of how to make it a repeater but ended up enjoying the heck out of it as a single shot. Just slap one of the Sugar Babies down at the rear of the magazine follower, closing the bolt snaps up the round with the controlled feed, then shoulder, aim, and shoot. Bringing the bolt back leaves the fired case sitting loose on the follower to be plucked up for reloading.
I always enjoyed pulling this out at the end of a IDPA or IPSC match and wowing the stragglers while feeding the big ole Mauser from my Dillon pistol ammo bag and making cans dance at 50 to 100 yards.
You have seen Funny Cars. This is a Funny Gun. No real reason to do it. Just cause. Although, I would not hesitate to hunt dear with my 200 grain Speer Hollow Point handloads. Really though, it is at its best as a plinker going to town with bulk cast 230 grain loads.