Well I tried to further the knowledge gained by this thread but failed. I only had 3 jugs to try and the 300 grain PT gold with 77 grains by weight of BH209 and harvester smooth black going 2006 fps. I thought I would be able to find it in the sand that was the backstop. Well. Hit the first jug about an 1" right of where I was aimng and destroyed the 3 jugs. I couldn't recover the slug but there was some copper jacket in the third jug. So I would say it mushroomed but don't know how much. According to the math it should have been going close to 1500fps and almost 1500ft/pounds KE.
The weather conditions were ridiculous, 98 degrees, high humidity, but virtually no wind. The winged pests almost drained the life out of me. I gotta get a thermacell.
Like Muley says I think for the price the PT Gold is going to be hard to beat.