Without the 7x57mm I would not have an internet handle. I own a CZ 550 American in 7x57mm and with my handloads and the 162 gr. Hornady SSTs that rifle will spit three slugs into a nice little .481 inch cloverleaf at 100 yards. With the 160 grain Nosler Partition it opens up to just a tad more than a half inch. I use nothing but H414. I have owned 7x57s in Ruger configuration for years until 2001, when I bought my CZ. That combo has been excellent for elk, mule deer, whitetail deer, antelope, javelina, wild hogs, coyotes and even turkey in Texas. The way I figure it, if I cannot get it done with a 7x57mm, then I don't need to be doing it in the first place. Have a nice day folks. Tom Purdom