Looking for subsonic load thoughts/ideas

[Matt45648]

With my two cans at 6 months on jail, Im beginning preparations for their release. Have an Omega 30 cal can and Hybrid.

Im wanting to start some test loads for subsonic 308 and 223. I believe I have the following on hand:

168 smk bthp
147 grn bt fmj

Varget
Trailboss

Large Rifle and Magnum primers

I don't have 223 projectiles yet

[markm]

I never got thrilled by 223 subs. Shot a few in my back yard, and got bored with is really quick.

.308, however is pretty fun because you can dope them out to a few hundred yards. I use 168 nosler CCs, 10.0 gr trailboss, and Large Rifle Mag primers. They stay sub out of my 20 inch bolt gun at my elevation... they start to go super out of Pappabear's 22" barrel.

[Matt45648]

Ill be firing them out of a scar 17... manually cycling isnt a big deal

[markm]

Ill be firing them out of a scar 17... manually cycling isnt a big deal

Yeah. I was just running them in an AR. .223 just wasn't worth the effort of metering Trailboss.

Running sub sonic rimfire would be way less ass ache and get you about the same thing.... unless there's a specific application where a jacketed bullet is needed. Plus you could set up an M&P or a 10/22 or something which could run semi auto.

[Bimmer]

IIRC there's a Hodgdon data for a subsonic .223: 4.0gr of Trail Boss and a 55gr FMJ.

If it were me, and I actually wanted some kind of terminal performance, then I'd load 77s over as much Trail Boss as possible (without going supersonic).

FWIW, I shoot subsonic .22lr, and it's a hoot.

[Matt45648]

I shoot 22 subs as well... but thats easy because I just buy them. Im very interested in a 308 sub load

[markm]

I shoot 22 subs as well... but thats easy because I just buy them. Im very interested in a 308 sub load

308 is really fun because is still has some oomph out to 200-300 yards. The come ups are huge compared to full power ammo, so it's like long range shooting inside of 300 yards.

[matemike]

.308, however is pretty fun because you can dope them out to a few hundred yards. I use 168 nosler CCs, 10.0 gr trailboss, and Large Rifle Mag primers. They stay sub out of my 20 inch bolt gun at my elevation... they start to go super out of Pappabear's 22" barrel.

Why not use 200gr or 220gr bthp's? They'd have a little more oomph at 100-150 yard ranges, although they may drop a lot faster than the 168's beyond that.

[Matt45648]

I may have some 220s as well

[markm]

Why not use 200gr or 220gr bthp's? They'd have a little more oomph at 100-150 yard ranges, although they may drop a lot faster than the 168's beyond that.

Shoot! I'd love to. But my 12 twist won't stabilize them. Pappabear has some heavy, fat soft point bullets (210 or 220 gr?) that would be perfect, but they keyhole at a hundred out of my gun when loaded sub. They fly straight super however.