just wondering if any 85 grain bullet, will hold up to the velocity or the impact of a thin skinned whitetail, say for instance a partition or maybe even a 90 grain ballistic tip, any suggestions thanks

Fats,
While I don't shoot the 6mm-284 I do shoot a 25-06. I have found the 115 grain ballistic tips work just fine. I would be leery of the 90 grain, though on anything other than a broadside chest shot, at least up close. The velocity may be too much. The partitions should do fine. If you reload and can get the Barnes' to shoot okay, try the 85 grain X-bullet or XLC's. I have recently switched to the 100 grain XLC's with excellent penetration and wonderful results. It did take a bit of playing around to get a load that shot well, but I reload for the fun of it. I opted for the XLC's as they are coated and there is less fouling.
Keep us posted as you decide.
Robert

I think Nosler still makes an 85 grain 6mm Partition, which would do fine in your 6mm/284.

I also think the old solid base Nosler 85 would be okay, but they're hard to find.

Barnes X would give excellent terminal performance, provided you were lucky enough to hit the deer with it. They shoot kind of "randomly" in all of my guns, but I haven't tried their XLC coated bullet.

I owned a 6mm-284 for a while. It was a .243 ruger that had been rechambered. It had a heavy 24 inch barrel and here are the notes under the loading data in my copy of hoanady's third edition. CCI 250, 51.0 grains H4831 3/4 inch groups, mild pressure, 100 grain hornady. Complete penetration on 125 pound hog, 70 yards through ribs rear of lungs, liver centerd, diaphram 3" hole, exit 3/4", sent sprawling, runs 25 yards and is finished. Excellent performance. I never used light bullets to hunt with in my 6/284 because I always thought powder capacity was for pushing heavier bullets faster. In my 6mm rem I had excellent results using the 87 grain hornady and the 85 grain sierra on deer pushed to 3200fps.

Been usinng the 95 BT'S with RL15 out of a 15in T/C Encore running about 2900fps, haven't shot anything with it yet still practicing, I'm better with bow @ 40yds than with this thing. Have thought about having a rifle built for this round in it I would most likely shoot partitions.