I'm backing it off to 5.0. I'll look back here before I try to shoot any of it.
Good man, A lot of good info here. I've been using berry's plated bullets since I started loading 9mm.
I saw where RC Model is loading 5.5 gr of Unique with berry's plated bullets and I must confess that I have been loading to the upper end of max loads with them also and so far haven't had any problems either.
I also put 6.5 gr of power pistol (6.8 gr is max) in my .357mags and have had really good success with it with Berry's regular plated bullets. Very accurate. I started out with 6.3 gr and went up.
If I screw up one of my pistols, it's on me, not Berry's. Same with you. Understand that.
This is above what Berry's says should be max load, but they are doing something right because they are accurate at that speed and I have not had any trouble with the plating coming off in my barrel.
I shouldn't be telling you this but but I think Berry's plated bullets are tougher than Berry's says they are.
Others above this post have already indicated this and I agree.
But BE CAREFUL! Work it up slowly and watch for copper balls sticking in your barrel, that's a good indication that your load is to hot for the plating.
I went up to 4.5 grs of Titegroup in my 9mm and started seeing copper balls fused to the inside of my barrel so I backed it off to 4.2 gr and they went away.
They came right out when I cleaned the barrel but it was a good wake up call.
When you see this, the plating is starting to liquify and that is bad news.
I've still load titegroup in my 9mm but have since taken it down to 4.0 gr and now use a slower burning powder for the hotter loads.
Unique is 31 on Hodgens burn rate chart and Titegroup is 14. This means Unique is alot cooler burning then titegroup. With Unique I Don't see where you should have this problem.
But start midrange and work up with caution. All guns are different to how they re-act to what.