This is a discussion on Which powder for .223/.308? within the Ammunition forums, part of the M14 M1A Forum category; I would like to use just one powder for both of these calibers. It only makes sense to me to have as few as possible ...
I would like to use just one powder for both of these calibers. It only makes sense to me to have as few as possible powders in the ole magazine. Is there such a critter as one powder that works "really well" in both of these calibers?
+1 for BLC-2 for good accuracy and easy metering. Also similar powders like H335 or W748.
I just got done loading some .308 with IMR4064. What a royal pain to meter in my RCBS Uniflow. I really had to weigh and trickle everything and in 30 rounds I had 4 powder bridging incidents which lets you realize how easy it is to have a bad day if you aren't watching.
Picking a powder for both depends on where you are in the spectrum of choosing a bullet weight to, what's good for a light bullet may not be suitable for a heavy bullet in the same cartridge. Peruse the manuals to get an idea for what will work where.
RL-15 or IMR 4895, 4064, or H4895, or Varget will work with both with RL15 metering better.
You may want to look at Ramshot TAC. According to their reloading information, both calibers are shown. I was at a range and the M1A next to me shot 1 MOA using Sierra Gamekings and this powder. Haven't loaded any .223 Rem yet with it, but I hope to this year.
It's a PIA......to make up a good load.......then, run out of powder.
I use to live in Hawaii......powder selection was dismal and sometimes the shipping of powder was spotty. You could be facing a "dock strike" or your store could be sold out on any given day. It was common for me to "stock up," on all components.
Of course, IF you buy in bulk via the internet and pay hazmat......that may work.
How YOU choose a powder is your decision. For ME......here are some of my criteria.......
1) Does it meter well? I prefer Ball powders. Because, I don't get the "Ka-chunk," like when loading with a "stick powder."
2) Is it available in 8 lb containers?
3) Is it widely available and usually in stock??
4) Am I paying a "premium" price?
5) Can it be used with multiple calibers and firearms? I'd hate to have a powder that will only be used in one firearm.
6) Is the gas pressure curve correct for my gas guns (very important with an M1)?
7) Is it known to be accurate in that caliber?
8) Is it dirty?
9) How does it fill the case? I don't like to mess with compressed loads.
10) Have I heard of problems with it?
Take it FWIW......it's just my .02.
I use W748 for my 7.62 and 5.56 re-loads. I've heard that it's, "temp sensitive." So, IF it works (or doesn't)............for you..........so be it. YMWV.
+1 on the Reloader 15 for me as well. (Although having some mil-surp pull-down powder stockpiled, that is used in both calibers works pretty well too) We might all think about starting to buy numerous 8 pounders the way these prices are creeping up. I remember back in the day....
Well, just what is milsurp pull down powder? I once heard it was BLC-2, but I haven't got a clue. If it was good enough for mil-spec, maybe that's what I want.
If it's pull down powder that you heard it was BL-C(2). It might be WC846. They are both ball powders and the burn rates between the two are very close. You can also use BL-C(2) load data for WC846. But reduce the charge by 10% to start.