Handloading for 20 inch 1/7 twist .223

jre4192

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Minuteman
Aug 28, 2011
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Anyone hand loading for a 20 inch 1-7 White Oak varmint upper? I've been trying 69 and 77 grain SMK's with Varget and havent been completely happy with the results. Anyone have any pet loads for this upper? For my purpose I can single feed so they do not have to meet magazine length. Thanks for any advice you can give.
 
Re: Handloading for 20 inch 1/7 twist .223

Make them magazine legnth.

~25gr Varget for the 69's or 24~24.5gr for the 77's.

~24gr Tac for the 69's or ~23.5 grains for the 77's.

As always, it's your face and hands, start low and work up to something safe.
 
Re: Handloading for 20 inch 1/7 twist .223

I've never been able to shoot little bitty groups with the 77's, a lot better with the 69's.

Having said that, I've shot some really good groups with the 77's at 600 yds, just not at 100 - 200 yds.

I shot a 5" group with the 69's one time at 600 yds on a calm day.
 
Re: Handloading for 20 inch 1/7 twist .223

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Jesse Engle</div><div class="ubbcode-body">So 80 grain Amax's are out of the question? </div></div>

Absolutely not!

My CLE service rifle hammers with 24-24.5 Varget and the 80amax. 12.5moa at 600 yards on a 100 yard zero. 20" Krieger 1-7.7 twist.

I throw 24gr. 24.5 (weighed) is max.
 
Re: Handloading for 20 inch 1/7 twist .223

24 grains of rl-15 in LC brass and a 80 grain amax gets me 2750 out of a 20inch 1/7 twist Brux barrel. This is a bolt gun load, do not think I would try it out of a gas gun.
 
Re: Handloading for 20 inch 1/7 twist .223

Mine is not a white oak it's a colt 20" 1-7 twist and it shoots 1/2"-3/4" @ 100 yds with 75 gr bthp hornady, 24 gr benchmark and cci 400 sr.
The most accurate load I have shot with this rifle is the 50 gr vmax with 25 gr benchmark but I wanted the heavier bullets so I shoot the 75s
 
Re: Handloading for 20 inch 1/7 twist .223

My 20" has shot .3" 5 round groups with 77smk's, but my sweet spot turned out to be 22.5 gr Varget. I didn't have much luck in the 24-25 grain range that seems to be so popular. I don't have a chrono, so I don't know haw fast. Boringly accurate to 500 yds, haven't gone farther with it.
 
Re: Handloading for 20 inch 1/7 twist .223

Ok, I might have miss-spoke just a little bit but it's usually smaller groups for the lighter bullets up close for me.

Yesterday I was loadtesting. I had 4 groups that shot under 1/2" at 200 yds.

The bullets were 80gr Noslers and 80gr Amaxs. I find it harder to get the longer bullets to shoot under that at 100 yards tho for what ever reason. The 52/53gr & 69gr bullets usually will without very much effort.
 
Re: Handloading for 20 inch 1/7 twist .223

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: 1lnbrdg</div><div class="ubbcode-body">Ok, I might have miss-spoke just a little bit but it's usually smaller groups for the lighter bullets up close for me.

Yesterday I was loadtesting. I had 4 groups that shot under 1/2" at 200 yds.

The bullets were 80gr Noslers and 80gr Amaxs. I find it harder to get the longer bullets to shoot under that at 100 yards tho for what ever reason. The 52/53gr & 69gr bullets usually will without very much effort. </div></div>

Do you care to share your over all length and powder charge for this load?
 
Re: Handloading for 20 inch 1/7 twist .223

In both cases, it was .005" / 010" off of the lands with both 24.4 & 24.6 gr Tac.

Now, having said that, the exact same loads didn't shoot that well in the last barrel which was a twin to this barrel.

AR-15 Spacegun, 26" 1/7 twist Douglas both chambered with the same reamer at the same time. The 1st barrel liked both bullets jumping about .025".

The exact legnth? I don't have that, measured with my bullet comparator but they are long as my throat is long.
 
Re: Handloading for 20 inch 1/7 twist .223

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: turbo54</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Jesse Engle</div><div class="ubbcode-body">So 80 grain Amax's are out of the question? </div></div>

Absolutely not!

My CLE service rifle hammers with 24-24.5 Varget and the 80amax. 12.5moa at 600 yards on a 100 yard zero. 20" Krieger 1-7.7 twist.

I throw 24gr. 24.5 (weighed) is max. </div></div>

20" kreiger is the key there...
 
Re: Handloading for 20 inch 1/7 twist .223

I've said it before and I'll say it again. A quality match AR will shoot just about any recognized "book load" well. Well enough to be very competitive in a service rifle match.

I gave up tailoring loads to two different service rifles, one with a 6.5 twist kreiger and one with a 7 twist douglass. Both rifles shoot the same load equally well.

There are so many loads thst work well. If you've found a load the you are happy with, run with it!

ET
 
Re: Handloading for 20 inch 1/7 twist .223

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: 1lnbrdg</div><div class="ubbcode-body">Make them magazine legnth.

~25gr Varget for the 69's or 24~24.5gr for the 77's.

~24gr Tac for the 69's or ~23.5 grains for the 77's.

As always, it's your face and hands, start low and work up to something safe. </div></div>

Totally agree w/this, load listed shot great out of my 16 inch 1-9, out to 250 yards, as far as I could shoot at that time.
 
Re: Handloading for 20 inch 1/7 twist .223

Went to a local gunshop a couple weeks ago to grab some Varget and 75gr A-Max, and struck up a conversation with a guy working there about shooting long range with 223s.

Guy said he shoots AR service rifle comps with a 20" 7 twist Krieger, and his 1000yd load is the following:

80gr Berger VLD
24.8gr RL15
Wolf primer
Win brass

Said he gets 2800fps and great accuracy, but the load is VERY hot and the brass is trash after just one firing.

IIRC, his 600yd load is 24.2gr RL15...didn't mention velocity but said he gets 3 brass loads with this recipe.
 
Re: Handloading for 20 inch 1/7 twist .223

22 to 22.5 grains of Vitavory N135 with 77 grain SMK bullets seated to 2.255 averages about .65 moa for 5 shot groups in my larue Stealth.
pat