Update on the Returbo powder test. I started at 135 grs and was getting 3150 about the same as RL-25 132 grs. 136 grs where at 3190's then I jumped to 138 and got 3245 this is where I stop. I was using the Cutting Edge 350 bullet. Now out to the 1 mile range to test after our deer season is over. I have the BAS chamber on the 408 Chey Tec brass.