You fellows are talking burn rates I like! I like em cause I have powders that fit the application. Some of the old Widener's SPP210, which is 4198-like, and quite a bit of the 10B101 flake powder that burns about 2400/Blue Dot speed. I'm just getting started, reading up. I caught a Stoner barrel on sale at Midway, and a NOE 190gr mold in stock. Now I need to decide whether to replace the barrel on my 6x45 upper or build a complete upper for the Legend. Probably the later, once I gather the parts.