I'm looking for a little cheaper sub-sonic load for my AR15 based whisper. I currently have it running great with 220 SMKs and 11.6gn of AA1680. It is a 16" barrel with a carbine length gas system. The gas port is opened up to 0.125.
Wideners has some 168 grain match bullets that are very similar (looking) to a SMK.
http://www.wideners.com/itemdetail.cfm?item_id=8439
Does anyone have any experience shooting a 168gn sub-sonic in a rifle similar to mine? Just wondering if I can expect it to cycle and what powder seems to work best.
Thanks
Threaded Mode