I have a Bergara HMR Wilderness wears a 24" Barrel "factory", I have been playing with Staball HD and love it using the 180ELD Match with old style Fed 215 Magnums. My final loads have been set at .003 of the lands and it loves it, was a last ditch attempt to see what happens. 69.6 is the charge have shot it at 45-80 degrees, velocity has been running at 2912-2917 during all these outing ,it seems to be the sweet spot as it is getting sd from 1.7 -2.8 groups for 3 shots run at a constant .277-.3.5, if I do my part by letting my face just touch the comb. Had fits at first as it was all over the place, used everyone's seating depth and was just not consistent, the minute T was within .009 and closed so did the sd's and group size Pete