Mark 4 M1 turret to Mark 5

You can use something like JBM Ballistics or Strelok that will give outputs in Mil and MOA in the same chart. You could also divide your dope by 3.438. After converting I'd just go and confirm everything to make sure the scope is tracking and everything is good to go.
 
Try Custom Turret Systems. He makes labels that wrap around your turrets in MOA or MIL increments. I purchased a MIL label for my Leupold 4x14-50 Scope (M1 Turret) because I wanted my turrets matched to my TMR reticle. The Leupold custom shop is not operational so it was the only choice I had. Well, I'm surprised to say they work as advertised and the options and customization is infinite. Inexpensive also.
 
Try Custom Turret Systems. He makes labels that wrap around your turrets in MOA or MIL increments. I purchased a MIL label for my Leupold 4x14-50 Scope (M1 Turret) because I wanted my turrets matched to my TMR reticle. The Leupold custom shop is not operational so it was the only choice I had. Well, I'm surprised to say they work as advertised and the options and customization is infinite. Inexpensive also.
Good idea. Thanks.