Choked Barrel Q’s

I am in the middle of building another Condor from my left over parts and have a question regarding barrels.

I know that airgun barrels are choked and meant for pellets. Is it possible to shoot boat tails from a non choked powderburner barrel? A .17 HMR Condor would be very cool. I would have to come up with a special seating tool but that shouldnt be too hard to figure out. Going supersonic would be a good thing then 🙂

Another possible option I have been toying around with is .32 cal barrel that I can shoot .32 lead balls from. I have a few Colt 1851 navys and have always liked the .32 size ball.

Are the roundies any good accuracy wise?