Success with a .45 ACP 230 grain FMJ in a .50 caliber sabot from a fast twist muzzleloader?

I own a CVA Electra with a 1:28 twist and am not interested in paying nearly a dollar per store-bought saboted bullet. In a search for inexpensive projectiles for a .50 caliber sabot (just the sabot, $8 for 50), I stumbled across the seemingly obvious: the plentiful and cheap 230-grain .45 ACP FMJ (1000 for $50 on clearance). My concerns are that most companies seem to list about 240 grain as the minimum weight projectile recommended for .50 caliber sabots. I'm aware that this 230 grain bullet is less suited for hunting than target shooting but I plan on mostly shooting at the range, anyway. Thompson/Center did once offer 230 grain Sure Fire Sabots and all the reviews I read were positive. Will 230 grain FMJ's stabilize? Can I expect anything approaching accuracy? I really don't have the time or space to cast my own bullets but still visit the range quite often. With prices what they are these days, I really hope somebody has had a good experience with the combination I'm proposing. Thanks.