GoTo Load for 5.56 75 Gr. Bullets

[MMH]

I have not had the chance to work up loads for my CLE AR15 (22" Bartlein 4-groove barrel w/ CLE chamber) & now am in crisis mode. I will be out west (CO/WY) in two weeks & will have a couple of down days on which I want to do some shooting (P'Dogs & general long range plinking). I want to go out w/ 500 rounds or so, and can quickly work up some loads. I will work up the loads to make sure that they safe in my rifle, but will not have a chance to do an OCW, or anything else to work up an accurate load. With that being said, what are some good GoTo loads. I have a pretty good inventory of Hornady bullets: 73 ELD-M, 75 BTHP & ELD-M, 80 ELD-M. Also have Varget & IMR 8208 & alot of LC brass on hand.

BTW, I do want to stay within mag length (2.31) & can seat the 73 ELD-M & 75 BTHP out to the lands & still fit in the mag (even though I would start w/ 0.020" jump). The 75 ELD-M & 80 will leave me w/ a 0.060" jump at a 2.31 COAL.

So, w/ the above in mind what are some good loads?

 

[TonyTheTiger]

Somewhere between 23.4-23.8gr of 8208 behind a 73 ELD has worked great in a few of my rifles. I've seen a lot of others on here with a similar load.

 

[300winemag]

I have 2 CLE barrels one 24” and one 20”, but can’t help much with the bullets and powder you have - I use Vt N-135. The SMK 77 gr bullets and the 60 gr Hornady Vmax I ended up loading at a COAL of 2.25” to fit into std mags, not chasing the lands. SMK’s only pinhole the p-dogs and the Vmax are more exciting. I was under book max on the 77 SMK/ at 19.6 gr of Vt N135 and just over book max at 23.0 gr of Vt 135 on the 60 Vmax.
All LC brass, work your way up. I do use 75 amax and Varget on bolt rifle 223 loads so that’s a good combo though. I’d check your mag length and start there, might not get much more than 2.25” coal

I had some data for 77 SMK with 8208 loads book max 23.2 and book min 20.5, my best was 22.0 gr and 2.25 coal notes show 4 at 1/2”, 1 at 2” called flier at 200 yds , 21.0 gr was decent 7 shots in a 1/2” tall x 1.25” wide at 200yd. In between and above those loads the groups were not as good. Not telling what your bbl will do?

Hope it helps, have fun!

 

[padom]

here you go out of 20" Compass Lake Bartlein

 

[Pig6Actual]

75 grain BTHP
24.0 Varget
2.26"

Sub-MOA and an avg 2550 with 9 SD out of a 16" AR w/ suppressor. Found another node around 25.0 but stuck with 24.0.

 

[MarinePMI]

75 gr ELDM, 24.5 gr XBR-8208, LC brass rem 7.5 COAL 2.275" (IIRC)

Tikka Varminter (24" bbl)

 

[60x]

LC brass, 24.5 R15, Federal or russian primer . Go to mag(2.260) load for 26" Krieger 1-7.7 CLE chamber.

 

[RTH1800]

LC brass and a tad over 24 grains TAC with F205M.

 

[Skoalman]

Lapua Brass, 24.2gr H4895, 1.888 CBTO, 3002 FPS, 5 SD out of 22" Brux.

I wanted to like IMR 8208 XBR, it gave me good accuracy and velo but SDs where high. Varget was ok but a little slower than I wanted.

 

[riot1013]

75 gr Hornady Match or 73 gr ELD Match over 22 gr of H322 at 2.260 has been a near .25 moa load for me out of my 16" JP

 

[TonyTheTiger]

75 gr ELDM, 24.5 gr XBR-8208, LC brass rem 7.5 COAL 2.275" (IIRC)

Tikka Varminter (24" bbl)

Either your powder charge or COAL seems fishy here.

 

[MarinePMI]

And why do you say that?

 

[Tnc]

 

[TonyTheTiger]

And why do you say that?

Because the 75 ELD has the ogive inside the neck at 2.275" and it was a compressed load when I tried 24.2gr of 8208 with the 75's at 2.35" in LC brass. If you meant 75 BTHP or 2.375" COAL it would all make more sense.

 

[MarinePMI]

Ah! ...typo on my part (good catch). 2.475" should be the COAL. Memory was a bit fuzzy (hence the "IIRC" for the COAL in my original post). And yes, at this COAL it is just about a compressed load.

 

[Westcoast308]

Old thread but I’ll throw in my recipe: 20” H-bar Douglas 1-7.7 twist barrel with a Compass Lake chamber. I tried 23grs of Varget with 75gr HPBT at magazine length with random lake city brass full length resized with a small base Redding competition die with a .246 bushing(SAC ones are the best). Then I seat them with a Wilson arbor press die. The stem It came with fits the contour of the bullet pretty well I think. With Remington 7 1/2 primers It’s about a 5/8” 5-shots and right at 3/4” max for 10 shots at 100yrds every time load. Feeding from a magazine like I would shooting high power rapid the rounds walk up then down a bit as they feed from side to side in the mag each round I shoot. The load could be a bit better with more tuning even I’m sure, I can’t hold open sights with a sling well enough to see a difference. The 3-9x Simmons scope with a carry handle scope mount is less than stellar for ultimate accuracy testing. Still yet this simple load runs great and has out shot every match 69-77gr ammo I could find even the big boys black hills, Berger, FGMM, Hornady, Sig ect they all came in around an inch usually. Cheers