Tuning Barrel/Caliber Swap on Samyang BigBore? eg: DragonClaw, 909

Does anyone have any experience swapping calibers on the Samyang big bores? I've got a DragonClaw, but ammo is virtually non existent, from air bolts to slugs. They don't like the ".50" that fits the Airforce,. they are really apparently .495 where as most others are .510



Not so for the 909/Light hunter in .45. there is a lot more out there. I've read that the internals are identical, but I can;t seem to find a source for parts, or any example of this having been done.

Thanks in advance.
 
Most claws like .498-.500 or so, my accuracy falls way off at .495. 


NSA has their 235 grain in stock, get it in .498 and you’re in business.

I’ve also had good luck with Matt’s Bullets .50 Cowboy bullets in 320 grain but my gun was power tuned.

A true .50 ball will shoot well also and run around 175 grains if I remember correctly. The .495 balls are horribly inaccurate though.