If you use the 50 caliber sabots, with the 45 caliber bullet then yes this will work for a traditional 50 caliber. If your using just the bullets and wads or the traditional round ball, then no this will not work as it is a 45 caliber mold. Hope this helps.

Hi Robert, Yes it will work just use the 50 caliber sabots. Balls will not work though.

This will work if using 50 Sabots with the 45cal bullets. For accuracy's sake, I would get a 50cal bullet caster rather than use sabots in your 50cal.

It is a .45 cal mold for blackpowder revolvers 450-200-1R DOUBLE CAVITY MOLD
Lee Conical Double Cavity Bullet Mold 450-200-1R produces a .450 diameter 200 round nose bullet for for black powder revolvers. A super accurate bullet that is easy to load straight and true. Two lube grooves prevent flash ignition and lead fouling. More energy and far greater accuracy than round balls. Lee mold blocks are machined from aluminum blocks because of its exceptional molding qualities. Aluminum molds heat up and cool down faster than iron or steel molds so good bullets can usually be produced after only a few casts. In addition, they are one-third the weight of iron or steel mold blocks for less fatigue during extended casting sessions. To ensure the best possible bullets, mold block halves are clamped together and then lathe-bored for unmatched roundness and size control. All Lee 1- and 2-cavity molds come with mold handles and hard anodized sprue plates.