Congrats on the new rifle.
Are you sure you want to convert that rifle to a 458-Lott??? You do realize it will no longer be a Magnum.
EKM I must confess I was looking at a CZ-550 chambered in 416-Rigby with my wife two weeks ago. I was thinking it would make a fine elk rifle. I told my wife this. She smiled at me & said thats nice dear? I quickly responded with "hay at least its not a magnum". She laugh at me. She brought the subject up this morning & laughed at me again. I guess I should have never got her interested in guns? She knows too much about them for my own good.[]
Have fun with it & give us a range report.