.223 Load for 55gr and 77gr

My favorite AR load happens to be a start load from my hornady 7th ed. manual. 55 gr fmj over 20.8 gr of H335. 2.2" col and cci #41 primer. This load will hit chest sized steal targets out to 300 yds on a red dot sight without even trying hard. The #41 primer will prevent slam fires if using in an AR type rifle.

24 gr. of H335 under a 55gr. FMJBT in my semi-auto .223. Great powder.

I use a FMJBT 55gr with 27.5gr W748 LC brass and CCI 450 primers. works real well in a 16" Bushy AR

Here's my current favorites....

24.8 to 25 gr H335 behind a 55gr. FMJBT w/ a Win SRP

and

23 gr. H335 behind a 69 gr. SMK HPBT w/ a Win SRP

both being shot from my kit built 16" AR-15 (1 in 9 twist)

23 grains of IMR4895 under 55gr FMJBT. Groups at .66 inch at 100 yds and I haven't even tweaked the load.

With your particular powder I typically run 27.0-27.5 (max loading) behind a 55gr FMJ. Velocities are good, accuracy is OK, nothing spectacular. I get occasional fliers, but I believe that is because of the bullet more than the powder combo. (FMJ isn't _that_ great.) BLC2 seems to be fine for the 55gr application.

I haven't played with any 77gr pills so I can't help you there. I have had good success with Varget behind 62 and 70gr rounds though.

What guns are we talking about?

What shoots great in my Savage isn't always so hot out of my AR and viceeee verseeeee.

Guns vary.

Have had great results with H335, WW748, and AA2460 with 55 gr FMJ BT bullets. I prefer ball propellants for .223 because they afford good load density and ease of use. Also like mag primers for most loads using the above named propellants.

Measured velocities are in the 3150 fps area, and all are very accurate from an IMI Galil ARM.