Using the Accurate Mold 46-500L2 I have tried the following:A few books, including Hornady (possibly Nosler as well?), indicated H335 as ideal, so that's all I've ever used. Starting load in Hornady is 67.5, maxing at 76.3.
Does anyone have any good data for a 500gr Gas Checked cast bullet load for the 458WM or 458Lott??
Thanks Toby! Everything I’ve read states H335 is one of the best for reloading the .458 WM. I just wanted to use up the nine pounds or so of 748 I have, then switch to H335. I’m just looking for some light to moderate loads with the 748 and the Barnes bullets I have. My Hornady manual shows 74.0-79.6gr with their DGS or DGX 500 gr bullets, but since the Barnes is longer, I’m just not sure? And it doesn’t show a 450gr bullet only their 480gr? Bruce Moulds was kind enough to send me some loads using W748, but they weren’t specific using the longer Barnes bullets. Maybe it doesn’t matter if the bullet weights are the same?H335 is the best (on paper) with Barnes TSX. Achieves good velocity with less than 100% LD.
In fact, I just loaded some 458 WM today with the 450gr TSX over 70.5 gr of H335.
Not a max load, but for practice it still should reach 2150 or so. Max loads go to 2275 or so.