has anybody here rechambered a 458WM to Lott and done any chronograph work on what the 458WM loads lost in velocity and POI after the barrel was rechambered?

thanks,

Rich

When I rechambered my barrel to Lott ,the old 458 load only lost around 50 fps or so. I think the point of impact was pretty close to where it was originaly. After I reassembled it and fitted the scope back ,I dont think I had to adjust it much, maybe a click or two. Whether this was due to removing scope or not I dont know. The 458 ammo does hit about a inch below the fully loaded Lott ammo when fired side by side.