Bullshop can size from .500 to .504 and most bullets are done in a final double sizing. He will do a single sizing at the stated diameter, if requested, which will result in a very slightly larger diameter bullet. His bullets mic' perfectly so far (for me at least). Aclean bore fitting conical is almost ideal in most cases for those that shoot a fouled bore and the beauty of the things is their accuracy (in a good barrel)combined with ease of loading. Slight engraving will only somewhat diminish ease of loading, a small amount being nota bad thing oftentimes in terms of accuracy. Depending upon your area and type of hunting, a small amount of engraving on the clean bore might be more desireable as it would certainly help hold the bullet seated. For my rifles, the perfect compromise just leaves very slight rifling markings on a clean bore yet still loads quite easily.I'm in the habit of and recommendperiodically checking to seethe load has remained seated while hunting or after being loaded for any significant length of time.

I've got some PowerPunches that are .505 and came with one of my UltraMags. I'm sure they would load and probably shoot well, but the inconsistent sizing from batch to batch is a bit of a problem, IMHO. Haven't tried them.

Bullshop now has some ".50 Lites" at 300 and 350 grains (I believe those are the weights he indicated) if some of you want to try lighter weight conicals.