AR15.Com Archives
 load data to duplicate M-193 ammo?
W_E_G  [Team Member]
8/1/2009 11:42:01 PM
Obviously a 55 grain FMJ.

What powder (and amount of powder) is best to duplicate M-193 function and ballistics?
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EWP  [Member]
8/2/2009 1:24:59 AM
You'll never get a straight answer to that question on this board, at best someone will give you a good load that is low and tell you to work up to max watching for pressure signs(25 gr's of H335 in LC brass with CCI #41 primers), or you'll get the accuracy is more important than velocity so there is no need in trying to chase velocity #'s when there are better loads to be had than the Mil-Spec M193 load answer.

Plus the Manufacture has special blends of powder they use to achieve that velocity without exceeding max pressure, plus they crimp their primers to aid in holding the pressure they are loaded to (or that may just be for safety reasons, so a soldier isn't stuck in a fire fight with a primer stuck in his FCG rather then just about load pressure).

So basically your going to be told it cant be done with just someone telling you a load and you loading it because every gun is different, your going to have to start with a load and work up until the velocity (3240 FPS I think) is reached without signs of over pressure loads.

I always just start at or near max and work down until the pressure signs are gone, it's much faster this way. But in no way am I telling you to do this.
the-fly  [Team Member]
8/2/2009 1:39:06 AM
While M193 can be duplicated, its NOT easy. I've tried, and the problem I keep running into is that I can hit it (3100fps out of a 16" barrel), but the load it takes is not hot weather (80F or warmer) friendly.

I went to a load that gives me around 3000-3050 and I considered that good enough for range use. For SHTF use I don't use 55gr anyways, my go to ammo is my MK262 clone load, which does about 2725fps out of my 16" AR's, and seems to work fine up to 90F (it rarely gets warmer then that here).

ziebart  [Member]
8/2/2009 1:39:07 AM
From the FAQ

For cheap plinking ammo try tac, or H335 and 55 fmj's and a load book. I like tac because of the way it meters. Ball powders are great.
ReefRaider  [Team Member]
8/2/2009 9:23:12 AM
Originally Posted By the-fly:
While M193 can be duplicated, its NOT easy. I've tried, and the problem I keep running into is that I can hit it (3100fps out of a 16" barrel), but the load it takes is not hot weather (80F or warmer) friendly.

I went to a load that gives me around 3000-3050 and I considered that good enough for range use. For SHTF use I don't use 55gr anyways, my go to ammo is my MK262 clone load, which does about 2725fps out of my 16" AR's, and seems to work fine up to 90F (it rarely gets warmer then that here).



I for one would like to know more about your MK262 load. Powder, COAL and so on.
coy121  [Team Member]
8/2/2009 3:55:01 PM
I use 25gr H335, CCi #41 primers, LC brass and projectiles (55gr).
tbonifie  [Team Member]
8/2/2009 4:17:24 PM

Originally Posted By EWP:
You'll never get a straight answer to that question on this board, at best someone will give you a good load that is low and tell you to work up to max watching for pressure signs(25 gr's of H335 in LC brass with CCI #41 primers), or you'll get the accuracy is more important than velocity so there is no need in trying to chase velocity #'s when there are better loads to be had than the Mil-Spec M193 load answer.

Plus the Manufacture has special blends of powder they use to achieve that velocity without exceeding max pressure, plus they crimp their primers to aid in holding the pressure they are loaded to (or that may just be for safety reasons, so a soldier isn't stuck in a fire fight with a primer stuck in his FCG rather then just about load pressure).

So basically your going to be told it cant be done with just someone telling you a load and you loading it because every gun is different, your going to have to start with a load and work up until the velocity (3240 FPS I think) is reached without signs of over pressure loads.

I always just start at or near max and work down until the pressure signs are gone, it's much faster this way. But in no way am I telling you to do this.
Dude, you're my hero!!!

Yes, this is not recommended. It's faster, sure, but kinda on the dangerous side!

the-fly  [Team Member]
8/2/2009 4:57:22 PM
Originally Posted By ReefRaider:

I for one would like to know more about your MK262 load. Powder, COAL and so on.


24.0gr of Tac, virgin never used IMG 5.56 brass, CCI 41 primers, 77gr SMK, seated to 2.250.

AeroE  [Moderator]
8/2/2009 8:13:55 PM
Originally Posted By the-fly:
Originally Posted By ReefRaider:

I for one would like to know more about your MK262 load. Powder, COAL and so on.


24.0gr of Tac, virgin never used IMG 5.56 brass, CCI 41 primers, 77gr SMK, seated to 2.250.



This is a hot load. Use with caution. Don't load this combination without working from a lower charge weight.
SYSTEM MESSAGE  
8/2/2009 8:16:24 PM
I should have locked this with the 'reduce charges until it gets better' post. Thing is, y'all are responsible for your own load development and whether you do that with intelligence is a matter of personal responsibility.
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