First of all, I'd like to thank everyone who posts in this forum. I've gained invaluable info about 50 caliber rifles and reloading by reading here for the last few years.
Some time back I'd read here about a collet puller but I was never able to find the post when I later looked for it. I've looked at the cost of 50 BMG pullers and balked, so this new post was very helpful. It turned out that the toolsforcheap.com location was relatively near me, so I went there and picked up the blocks and quick release. I then ordered the 5C collets (.223 thru .50) from victornet.com. All told, for around $80 I have all my rifle calibers covered.
I've successfully pulled projectiles from some 50 BMG handloads and the 33/64 collet doesn't even leave a mark on the extracted bullet. The whole process was quick and painless.
I'd post pix, but I don't seem to have that capability.