Is there any difference between the scenar standard jacket and the silver jacket? There's a huge price difference though.
I've got them, as well as my Lyman Moly kit and other moly bullets.
Generally, you'll get less velocity with moly coated bullets, so adding a grain to your 'naked' load, will get you back to that target velocity.
I'm on the fence vis-a-vis moly, but if I have them, I'll shoot them.
I've also done a nice 30 cal moly test vs. nakeds and in some loads, I actually got more velocity with molys, so who knows?
Personally, unless I got a deal on moly coated bullets, I wouldn't pay the premium.