|
Forum Rules | Firearms Safety | Firearms Photos | Links | Library | Lost Password | Email Changes |
Register | FAQ | Calendar | Today's Posts | Search |
|
Thread Tools | Search this Thread |
February 15, 2013, 01:36 PM | #1 |
Senior Member
Join Date: April 16, 2011
Location: Marshall, Texas
Posts: 104
|
Imr 4064 vs accurate 4064 (AA)
I have not been able to find Imr 4064 since the buying frenzy started. I can however find AA 4064. It is next in line behind Imr 4064 on the burn rate chart meaning it is either the same rate or just a tad slower. Have any of you used it and if so how is it? I use Imr 4064 for 22-250 mainly but also 7.5x55 and 8mm mauser along with Imr 4350. Have found a source that actually has several pounds on the shelf but the fact that there is so much left makes me wonder about it's usefulness.
|
February 15, 2013, 02:34 PM | #2 |
Senior Member
Join Date: April 23, 2006
Location: South Texas
Posts: 2,010
|
I bought 8 lbs. on sale once and could not tell the difference between IMR. Natually work up your loads as between lots but I bet you will end up with nearly the same load as with your IMR.
|
February 15, 2013, 02:42 PM | #3 |
Senior Member
Join Date: April 16, 2011
Location: Marshall, Texas
Posts: 104
|
Thanks for the reply. I did notice that it was also less expensive.
|
February 15, 2013, 03:49 PM | #4 |
Senior Member
Join Date: May 27, 2007
Posts: 5,261
|
I bought several kegs of AA4064.
It is a shorter cut powder than IMR 4064 and thus meters better. I developed some loads in 223 and 308 Win. In my Kreiger Barreled match rifle I got the velocities I wanted but not in the Wilson barrel AR15. I could not get more than 24.0 grains in a 223 case without extraordinary measures. Kreiger barrels are tight and loads developed in a Wilson or Douglas will blow primers in a Kreiger. With the new brass colored WSR, I had to cut loads to 22.5 or 23.0 because I pierced primers during rapid fire. This was disappointing as 23.5 grs AA4064 with a 69 SMK did not pierce primers with the older nickel plated WSR. My lot of AA4064 shoots exceptionally tight groups in the 223 and I won my class and got medals shooting it at 200 and 300 yards at Camp Perry in the Kreiger barreled rifle. But, in the 308 Win, I get over pressure indications at velocities less than what I can get with IMR 4064. The 190 grain loads are just too slow for 1000 yard work. I have shot a 175 SMK 41.5 grains AA4064 LC cases CCI #34 at 600 yards and only dropped a couple of points, even though the velocity is less than what I want, the load was accurate. It is a good powder within its limitations. Code:
223 Remington 24" 1:8 Kreiger Barrel 69 Sierra 21.5 grains N135 LC mixed WSR (Brass) OAL 2.25 2-Jul-04 T = 80° F Ave Vel = 2818 Std Dev = 20 ES = 70 Low = 2776 High = 2846 N = 10 69 Sierra 23.5 grains AA4064 lot 5902 Fed cases WSR (Brass) OAL 2.25 5-Aug-05 T = 100° F Ave Vel = 2855 Std Dev = 31 ES = 83 Low = 2817 High = 2900 N = 10 69 Sierra 24.0 grains AA4064 wtd lot 5902 S&B cases WSR (Brass) OAL 2.25 2-Jul-04 T = 80° F Ave Vel = 2937 Std Dev = 25 ES = 81 Low = 2880 High = 2961 N = 10 Fairly Flat primers Best group 69 Sierra 24.5 grains AA4064 wtd lot 5902 S&B cases WSR (Brass) OAL 2.25 2-Jul-04 T = 80° F Ave Vel = 2988 Std Dev = 20 ES = 76 Low = 2955 High = 3031 N = 14 Flat primers Excellent 15 shot group 223 Remington Rock River Arms NM LAR-15 20" 1:8 Stainless Wilson barrel, 69 Sierra 24.0 grains AA2520 LC mixed WSR (Brass) OAL 2.25 22-Aug-04 T = 75° F Ave Vel = 2798 Std Dev = 24 ES = 95 Low = 2756 High = 2851 N = 16 308 Win Ruger M77 MKII 26 " Barrel 1:10 twist 174 FMJBT LC79 Match M118 White Box 18 Dec 2010 T = 40 °F Ave Vel = 2546 Std Dev = 17 ES = 41 High = 2572 Low = 2531 N = 5 174 FMJBT 41.0 grs AA4064 wtd Lot 5902 LC mixed CCI#34 OAL 2.800" 29 Dec 2010 T = 40 °F Ave Vel = 2495 Std Dev = 11 ES = 36 High = 2514 Low = 2478 N = 10 174 FMJBT 41.5 grs AA4064 wtd Lot 5902 LC mixed CCI#34 OAL 2.800" 29 Dec 2010 T = 40 °F Ave Vel = 2520 Std Dev = 21 ES = 68 High = 2551 Low = 2483 N = 10 174 FMJBT 42.0 grs AA4064 wtd Lot 5902 LC mixed CCI#34 OAL 2.800" 29 Dec 2010 T = 40 °F Ave Vel = 2555 Std Dev = 21 ES = 73 High = 2599 Low = 2526 N = 10 174 FMJBT 42.5 grs AA4064 wtd Lot 5902 LC mixed CCI#34 OAL 2.800" 29 Dec 2010 T = 40 °F Ave Vel = 2575 Std Dev = 23 ES = 76 High = 2610 Low = 2534 N = 10 Two rounds sticky extraction, over max load 190 Hornady Match 41.0 grs AA 4064 wtd lot 5902 170grs ≤ Fed cases ≤ 175 grs Fed 210S OAL 2.850 19-Oct-04 T = 77 ° F Ave Vel = 2465 2483 excellent group Std Dev = 14 2460 ES = 31 2452 Low = 2452 2453 High = 2483 2475 N = 5 190 Hornady Match 41.5 grs AA 4064 wtd lot 5902 OAL 2.850 170grs ≤ Fed cases ≤ 175 grs Fed 210S 19-Oct-04 T = 79 ° F Ave Vel = 2493 2489 Std Dev = 5 2490 ES = 12 2495 Low = 2489 2501 High = 2501 2490 N = 5 excellent group 190 Hornady Match 42.0 grs AA 4064 wtd lot 5902 OAL 2.850 170grs ≤ Fed cases ≤ 175 grs Fed 210S 19-Oct-04 T = 79 ° F Ave Vel = 2536 Std Dev = 10 ES = 34 Low = 2522 High = 2556 N = 10 excellent group
__________________
If I'm not shooting, I'm reloading. |
March 16, 2015, 04:01 PM | #5 |
Junior Member
Join Date: March 16, 2015
Posts: 1
|
Slamfire, what do you think about AA4064 in 5.56 LC brass with a Hornady 75gr?
I loaded a few up from 22.5-24.5gr set to 2.25 OAL. The 24.5gr really got crushed and because the BTHP has a lot of room in the hollow point cavity it deformed from the press. Basically it made the loads pinch the tip making it now 2.26 OAL. I didn't want to press them down further because that'd set them to low because it was the tip giving a longer reading. I just sand papered the tips back down to 2.25. I did notice the LC brass was fine but I couldn't load any 223 brass as the powder came way up into the neck. Any advice? |
March 16, 2015, 05:41 PM | #6 |
Senior Member
Join Date: April 13, 2013
Posts: 324
|
Have you tried AA4064 in a M1 Garand or should one just stick with IMR?
|
March 16, 2015, 08:29 PM | #7 |
Senior Member
Join Date: June 27, 2009
Location: SC
Posts: 200
|
I've used both, worked up loads for 243 Win and 30/06. I found no more difference than in different lot numbers of the same powder. I don't shoot the groups most of these guys do but i do OK.
__________________
You can have your own opinion but you can't make up your own facts ! |
March 17, 2015, 08:52 AM | #8 |
Senior Member
Join Date: September 22, 2014
Posts: 163
|
For my Garand - I loaded 46.5 gr of AA4064 with a 147 gr FMJBT in military cases and got an average of 2543.8 FPS with 28.4 stdev. It worked fine.
|
|
|