Junkman: My setup looks just like yours. When I removed the rail I found the mounting screws were only finger tight.
Escess: I just got that Lee mold in the mail today from Midway based on what Curly James has been using in his rifle. I've got 4# of 2400 so I will cast some up tomorrow of water dropped WW with a bit of 50/50 solder added to aid fill out. What lube have you been using? While my pot is heating up I'm going to get the hot plate going to make a batch of 45/45/10 and give that a try.