When I first was doing load development for the 100g btip and IMR=4350, the temp was probly 65-75 degrees, cant remember right off the top my head. Velocity was 3350fps. Yesterday I loaded the same load, temp was around 45 degrees,but this time velocity was 3150fps. This is a new can of IMR-4350, so maybe that might have somethign to do with it?? Also, on these particular cases, they ahppened to be my trial and error on flash hole deburring. I ran the deburing tool all the way through the flashhole on all the cases. I didn't know untill later that your not supposed to take that much off /ubbthreads/images/graemlins/blush.gif Just kinda curious as to why my velocity dropped off 200fps, accuracy wasn't exactly what I was expecting either...I ran a series of 5 shot groups with 50.8g, 51g, and 51.2g. Averages were 1.25" at 100 yards.