AR15.Com Archives
 reloading 69 gr SMK please help
SUbMOAShooter  [Member]
5/29/2008 12:30:39 AM
I have a 1:9 barrel
Winchester brass
SMK 69
CCI or winchester primer
Varget Powder

can some one tell me a good load for a 20" AR15

thanks

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CCW  [Team Member]
5/29/2008 12:45:55 AM

Originally Posted By SUbMOAShooter:
I have a 1:9 barrel
Winchester brass
SMK 69
CCI or winchester primer
Varget Powder

can some one tell me a good load for a 20" AR15

thanks



Go here: http://data.hodgdon.com/cartridge_load.asp

Always work up from the listed STARTING loads and never exceed MAXIMUM load.
matt33  [Member]
5/29/2008 12:53:33 AM

Originally Posted By SUbMOAShooter:
I have a 1:9 barrel
Winchester brass
SMK 69
CCI or winchester primer
Varget Powder

can some one tell me a good load for a 20" AR15

thanks


You have all the components you need to get into sub-MOA range. Start in the 23 gr range and work up without exceeding 26.1 grains of Varget. I use CCI BR4's. For me and my Colt, 25.5 grains of Varget is the sweet spot, but for you, it might be 24.1 or 25.7 or 23.9 and so on. The only way to know is bench time and range time.
SUbMOAShooter  [Member]
5/29/2008 1:01:31 AM
Yeah your right I need to try different loads
TheInvisibleWhip  [Member]
5/29/2008 1:07:10 AM

Originally Posted By SUbMOAShooter:
I have a 1:9 barrel
Winchester brass
SMK 69
CCI or winchester primer
Varget Powder

can some one tell me a good load for a 20" AR15

thanks



I got best accuracy with 25.8 out of my 16" Bushmaster with 2750 fps . 26.0 was a safe load also. The 69gr SMK has produced the most accurate results for me. I've heard it's length is a perfect match for the 1 in 9" twist.
Greymantle  [Member]
5/29/2008 1:12:36 AM
For AR-15 you may want to use CCI 41 MIL-SPEC Small Rifle Primer. Military uses them. These thick-skinned primers reduce the likelihood of "doubling" and slam-fires. I use them too. IMHO you should a thick-skinned primer (ike CCI 41) in any firearm that uses an inertial firing pin - like your AR.

Tech support at Sierra recently suggested I try Benchmark and H4895 if you are interested in developing a low-flash "tactical" round. They are both single-base powders known for low flash, and are "fast" enough to develop good velocity in 16, 18 and 20" barrels. A previous post gave you the URL for Hodgdon load data.

Now active: Hodgdon Load Data Link

TripletDad  [Member]
5/29/2008 11:30:40 AM
My 20" RRA 1:8 twist NM absolutely loves 69grain SMK and 25.5 grains of Varget. Chrono's from my rifle at 2873fps. Not the speediest, but 10 round groups at 100 yards @ less than 1/2", i.e. all touching.
MitchAlsup  [Member]
5/29/2008 12:50:49 PM
I got excellent accuracy at 24.6 gr of Varget
mr_wilson  [Team Member]
5/29/2008 1:28:52 PM
Quite a few good loads right up top here.....

Reloading database for rifle

mike
SUbMOAShooter  [Member]
5/30/2008 11:13:18 PM
I have a lee factory crimp die should I do a very very light crimp?
SUbMOAShooter  [Member]
5/31/2008 12:44:08 AM
oops
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