any cycling sub load for 150gr bullets?

[Ring]

8" barrel

ive use trail boss, but that wont cycle..

[RNT]

Try reloader7, 1680, imr 4198, h 4198........there are others that might work but drawing a blank.

[AccurateOkie]

My friend has a load for the 147 FMJ using 9.5gr of A1680. It cycles fine and is subsonic out of his 9" barrel with a SDN-6(old style). his only complaint is the FPS extreme spread is a little high but still accurate.

[Ring]

i was looking in here
viewtopic.php?f=141&t=86378

found this...

I ordered 500 for my handi rifle which I use exclusively subsonic and suppressed. Worked up a load with lilgun
Xtreme 150g fp
Wcc converted brass
Hornady dies
Cci 400 small rifle primers
6.6g Lilgun
Coal 2.05"
Crimp measured at .331
1013 fps 16" handi rifle

It shoots great out of the handi rifle. I tried the same load in my 8.5" ar pistol and I need to bump the charge back up for it to cycle properly.
8.5" cmmg wasp barrel
Pistol length gas
Spikes tactical lower with regular carbine buffer
Milspec carbine spring
RRA stainless bolt/carrier
Gen 3 and gen 2 Pmags
Gemtech HVT-QD

Chronographed at 865, 865, 866, 864, 867
Spent casing ejected but didn't feed next round in. I think 6.9 or 7.1 will have enough gas to cycle properly. When I get a chance I'll load a few up and see if I can get it up to 1040 fps and cycle properly. When I shot the 150's out of the ar pistol I could hit small pieces of broken clay pigeons out to 75 yards very easily.

a good working point