Pinestump447

Yes the Platnum versions are tougher than the copper or the all lead versions. If you are set on shooting Powerbelts then yes, I would recommend you shoot them.

Traditionally, when you shoot stiff charges your accuracy tends to decrease greatly. Not all instances as some guns are powder hogs so it's best to make sure you try several different charges and see where the groups start opening up considerably.

My suggestion, take it for what it's worth, is to find you some sabots and not use the powerbelts. (this is assuming that sabots are legal (since you're allowed to use scopes I would assume so)) You'll get a lot more flat trajectory and more reliable performance from most any other bullet. I'm sure you local shops will have some shockwaves, XTPs and such.

If you must shoot full bore conicals, then my suggestion would be the 300g FPBs. They are amazingly accurate in everything I've ever shot them out of.

The main keys are making sure you know the trajectory of the load you're using and also that you are able of making ethical shots at that distance. That's a LONG way w/a ML for the average shooter.

Hope this helps!
Scott