Well, I just ordered RCBS collets for the .41, .47, and .50 .. i had a .45 -- which worked up to .475 ..

but you have to be careful.. the collet puller is like 12.85 .. but if you order a BMG or a .475 puller, they are 78.80 and 212BUCKS each.

so, as a PSA, if you need a collet puller, be careful which part you order!