Well I just got back my chambered barrel. I've processed a 100 cases for testing. I had deburred the flash holes, uniformed the primer pockets, chamfered the necks and annealed after sizing. I used the Frankford Arsenal OAL Gauge and came up to similar measurements as posted on his website. So how is mine "improved" (highly subjective since it is not tested)? I changed the dimensions to blow out some of the taper. I decided to try this since my 284 Shehane has worked so well, I figured why not try it on this as well? The down side is 2 sets of Sizing dies. My only concern is the extraction. If it extracts fine then I'm a happy camper. If it does not then I just sank a ton of $ just to learn one way not to do it.