Looking for help with lower power .223 loads

[MED]

Well, between night vision and a suppressed AR, I want to load some lower velocity 223 loads. Went shooting the other night and it was pretty much magical, except for listening to the supersonic crack sound light a fighter jet going over. But even that was pretty cool.

ive researched subsonic and don't want to deal with it for 223. I have a .22 suppressed that shoots subsonic and cycles the gun. I'm not interested in a single shot AR

basically I was curious if you guys have done any load testing for lower power, and lower noise that will reliably cycle an AR. 16". Can be either 1/9 or 1/7 twist as I have both.

and also, is it even worth it? I'm sure I will still hear the supersonic crack traveling after I shoot. The suppressor is definitely quiet enough even shooting standard m193 rounds. But I think it could stand to be a but more quiet and possibly cut down on the supersonic noise as well.

let me know your thoughts

A 75gr bullet with H322 out of your 1:7 barrel should drop you into the 2500-2600fps range w/out any cycling issues. H322 is one of the fastest burning powders for the 223 and it may accomplish your goal. Start at 20gr and see if you can drop it from there and/or adjust for accuracy. I will ask a friend of mine who loads for his suppressed 223.

EDIT: I talked to my friend, who suppresses his 223 (among others). He doesn't feel as though this will accomplish much if anything