What Diameter bullets are you loading.
The conversions are made to shoot smokeless powders, they last. It's the guns themselves, the frames and barrels, that may not last, but I have yet to here of someone who regularly shot low power smokeless loads using LEAD bullets have a conversion gun not last.I reload .32 S&W Short with a .32 auto die set and 78 gr. RN bullets from Acme in my Pietta Remington clone's conversion cylinder. These bullets are .313 diameter.
http://www.acmebullet.com/bullets-r...lets/32-Cal-78-RN-Lead-Cast-Bullets-Hard-Cast
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I have used Trail Boss smokeless powder with no ill effects. However, these conversion cylinders may not hold up under long usage with smokeless powders. Users beware.
.314 home cast
I did do some smokeless rounds a couple of years back but measuring accurately about 1 grain was a real problem with the tools i have.