My Hunting buddy and I have 60-70s vintage Marlin 444s/ss rifles and have refinished them both to perfect condition (with the addition of Kick-eez pads and mercury recoil reducers in the stocks - ouch...) Our final project is seeing about wringing all the accuracy out of these thumpers as possible. We have been experimenting with Hornady 265 and 300 grain bullets with only limited success. Marshall's articles on the .444 drew me to Beartooth and I have purchased all of the equipment to fire-lap our rifles. I'm in the process of reading his technical guide now. This book is a real 'forehead slapper' if you get my drift... Well more twice as much as the price he sells it for. I have a question about the loads to use for fire-lapping. I have some polyester batting and some bullseye powder laying around and want to use that for lapping loads. Can anyone tell me if they have used bullseye (or any other pistol powder) and how much powder was needed? Did you use batting in the case?