I used Blue Dot in 243 as well as 223 for quieter short range stuff. Never near these suggested levels though. It works well. Quiet. Effective. Also tried Red Dot in 223, thinking faster = cheaper = more efficient.False economy. You must be extremely cautious reloading shotgun powders in rifle cartridges. It is so easy to double charge a case and blow up your gun (if not your face.) Not at all obvious visually. I did it. Lost a beautiful little Sako - and all confidence in my ability to stay focused, even loading one at a time off a Lyman automatic dispenser. It froze up, flashed an error message and somehow I forgot to dump the shell before starting over. You can space out using regular rifle powders and note your mistake immediately. Reduced loads with shotgun/pistol powders imply additional inherent danger. It may be safe. But Idiot proof yourself first. Be extra careful! PS I now own a 22 mag instead.
