I am currently using IMR 4064 for my AR reloads and the lee perfect powder measure, since I don't have the time or desire to trickle and weigh each round. Problem is the powder measure isn't doing that well with metering the charge. I am looking for suggestions on alt. powders that would work well with the measure and still acheive similar results. BTW I am loading 69 gr. SMKS with a 22.5 gr. charge of IMR 4064 currently.