09-30-2018, 08:26 PM (This post was last modified: 09-30-2018, 08:41 PM by diddlyv.)
Folks seem to like CFE 223 Lvr and some other powders anyone having any success with AA2520 or Varget. I plan to shoot out of both a 16 and 20 inch barrel.
I have the vol 1 and II Grendel books but alas they were published before the 129 ABLR was released much like many new bullets are not in the Vol X Hornady book. Will be using Hornady brass and CCI 450 primers
I personally have not have had good results with CFE223 others mileage may vary. I am interested in others results with the Varget and Tac just got some of each.
I asked Western Powders about 2520 Load Data here is the response
We have not tested the 129gr Nosler ABLR at this time. Here is load data that you can use.
A start charge of 26.2gr to a max charge of 29.1gr of A2520.
Me again in this case the max charge is .5 grains lower than max for the 123 Sierra of 29.6 grains and a 2491 velocity
Guessing I will get a decent load in the 2450 to 2475 range from a 20 inch barrel and close to 2400 from my 16 incher.
Having a safe place to start let the fun begin. I will now test 223 CFE LVR and 2520 hope to get a range report by next week.
Research, and start really low on the powder and work up.
Chronograph is a must.
Headspace comparator tool is a must. You have to know where the lands are in your barrel, and the ogive on the load you are trying.
Again. Start really low on the powder.
Any info you glean from this site, or the web in general, uses it as reference only, not fact.
My AA2520 loads are for a Howa bolt action (2.32 COAL vs 2.29 in an AR with the right mags). IIRC the Howa lands are a bit farther out.
They will not work in an AR due to the COAL. The longer seating depth gives me lots of room for powder, and a bolt action chamber handles pressure differently/more than the AR.
I've gone up to 27.0 grains of AR-Comp with 129-grain Accubonds without issue. Accuracy potential seemed to be there. Should you try it, you're on your own---just as I am.
129gr ABLR
26.9gr of AR Comp
Ogive to base: 1.643
COAL: 2.266
Avg FPS: 2109
A little over 1.5 MOA, I believe I can pull this in a bit.
Distance:100 yards
Found a sweet spot at 30.6 grains CFE223, 2.230 coal. 2550 fps out of a 24" Radical Firearms upper, JP bolt, ALG trigger(modified) ALG handgaurd. RP 7.5 primer in once fired Hornady brass, trimmed and chamfered. Slightly less than 1.2" center to center. Now to try different seating depths, and a base to ogive tool soon to be inbound. Started at 30 grains even, every .2 grain increase resulted in a 20 fps gain in velocity. 30.8 grains, no increase over 30.6. Every group shot with this barrel always has 2 touching, with 3 outliers. 30.6 had 2 groups of 2 touching, with 1 outlier making it 1.2 inches. Extreme spread 34 fps.
