All I have left to do on my 450 is to finish the checkering. I tried 81 grains of the 3031 as you mentioned and it shot great but a bit slow at 2250 feet per second. I am thinking of going up a bit. 88 grains of RL15 gave me fair results with the 480 grain slugs but again a bit slow so I am going to try 90 grains. All of these loads seem to print to about the same point as you said and the rifle is shooting 1.25" apart at 50 yards which in this case should put it about on at 100 yards. Bye the way, good to hear from you again!