Was looking into loading up some cast bullets in a 45-70. There ia a lot of older information using RX7 powder in some of my books but I can't find any powder. I'm assuming RX7 is now RL7 but assuming anything in reloading can be a health hazzard.

Anyone know if my assumtion is right or know who makes RX7?

THanks...C

Lyman's 47th Edition uses Rx7 as an abbreviation for Reloder 7. I read that as the two being the same. Sierra says AKA RE7, Re7, RL-7, as well as RX7. It's now made by Alliant, formerly Hercules.

RX7 = RL7 = Re7 as far as I understand. I wish folks were consistant with this stuff.

Thanks!

The original Reloader line of powders was spelled with a stylized "X" superimposed on the "R's" so that it appeared to be the pharmacy symbol for a prescription, ie. "just what the doctor ordered". I still tend to write "RX-15" (or RX-11, RX-12, and RX-21, all long dropped from production) when I refer to these powders. Seems odd to an old codger that the young bucks don't seem to know what this means. But then I keep forgetting that I've been reloading for as many years as most shooters have been alive. Hmmmm. . . . kinda makes me tired to think about it. I still refer to products introduced within the last two decades as "new".