Loading 55gr Vmax w/ H335 recommendations?

[scaast]

I have 55gr Vmax bullets and H335 powder...anyone loaded this combo before for an AR? Any recommended loads for best accuracy?

[Hannu]

Tried, but did not get good accuracy.
H335 24.8 grains in Winchester brass + Federal 205GM primer COL 2.25" was the best, averaged 2.4" at 300yd, muzzle velocity 3259 fps. I got little better accuracy with H4895, but not much.

I noticed, 55gr V-max accuracy improved when muzzle velocity decreased. If you want best accuracy, try less than 3100 fps and you might get better results than I did. I tried to develop long range PD load, but went with Nosler Ballistic Tip because of much better accuracy with high muzzle velocity (3350 fps).

[scaast]

noted...thank you sir. 1:7 twist or 1:9? 16" barrel? I should have put that in my post...I have a 1:9 twist 16" barrel.

[Hannu]

20" and 9" twist. Chamber has really big effect on accuracy and muzzle velocity, often bigger than 2" of barrel lenght. My barrels chamber is pretty close to .223 Rem SAAMI.

[Colorado Osprey]

AA2015 at near max load has been known for producing good groups in bullet weights at or under 55 grains. Twist and barrel length doesn't seem to matter. It's no speed demon, but known at comp matches for accuracy.

I got good velocity from H335 but not the best groups either... it's kinda dirty too. Doesn't seem to matter what gun or barrel length. H322 and H4198 are better choices if Hodgdon floats your boat.

I used 4198 for many, many years. The new 4198 meters much better than the old stuff.

[WyoXD]

My pet load for coyotes is 25.0 gr H335 with the 55 gr. Vmax (CCI 450's). I get good accuracy from my RRA 16". Velocity avg's just over 2900 fps. The combo works well in my T/C Encore Pistol (15") also, but I do have to back the powder down a bit for it.