Sub-sonic loads in a .308??

[pertnear]

Probably obvious from this post I know nothing about suppressors except they are expensive & the ATF has to be involved. I started looking at putting together a super-quiet 300 BO upper for shooting hogs around a feeder. Normally I put .222 bullet into a hog's noggin then wait & hope more hogs come back. When I starting thing about converting one of my uppers, I got sticker shot at the cost! My buddy has a .308 bolt gun that is suppressed. Could a heavy bullet reduced load be reloaded to be sub-sonic & suppressed in the 308? TIA

 

[madgrad02]

For sure - I know Discreet Ballistics (and others) have subsonic-308 offerings. But can vouch, sub-300BLK is just fun to shoot. Haven't gotten to shoot any critters with the Discreet Ballistics 300BLK loads I ordered, but the selous loads look wicked how they petal out.

 

[Nine Banger]

Yes.

You need a flat based projectile and a purpose driven powder choice like Unique, Trailboss or N330.

Speer Hot Cor might be lethal at close range on a feeder.

I’ve done this with 223, 6.5cm, 280 Remington and most useful is 450 Marlin. I load these for plinking at steel off the front porch. When im shooting animals I use supersonic loads.

 

[Axlrod]

Yes, there is data on Hodgdon's site. Middle of the page there is a "subsonic" button. It brings up a bunch of cartridges to pick from. The 308 has few powders that work, and Trailboss is the best, but has not been made in many years. The 300 B.O. has many suitable powders.

Couple tips:
Shoot a paper target at 25 yds or so without the can. That way you can see if the bullets are flying straight or not.

In subs you "load down" start at a max subsonic load and decrease powder until you reach the desired fps. This can prevent too low of a charge for your particular rifle. Which may result in a bullet getting stuck in the barrel.

I have shot subs in 300 Blackouts, & 308's- both gas guns and bolt action. The 300 B.O. is the easy button.

Reloading Data Center – Hodgdon Reloading Data Center

hodgdonreloading.com

 

[omicron1792]

168 grain- EXPANDING SubSonic – Custom Reloads of Dallas

dallasreloads.com

 

[northernlandgar]

Yeah for sure, I've had good luck using Trail Boss in .308, 6.5CM, and .30-06. I haven't chronographed any of those loads but wow it's quiet -- even without a suppressor. As an added bonus with Trail Boss, you barely use any powder (10 to 12gr in a 6.5CM with a 140gr Speer Hot Cor for me), so you get really good mileage from a pound of powder, and there's basically no recoil.

 

[waspocrew]

The only problem with Trail Boss is there is none to be found - been that way for a long time. I haven't shot 308 subsonic, but have done plenty of 300 BLK. It's way too much fun.

 

[backstraps01]

Subs in a 308 bolt gun are great

I stock piled Trailboss before the extinction

Rem 700 16.5” Silencerco Harvestor168 or 180gr maker trex bullets puts critters down quick and QUIET

 

[letrbuck]

Hornady's 190 subX in 308 has been working well for me. Since trailboss has been gone forever I've been loading with h322 via hodgdon data.

 

[TradLife406]

Probably obvious from this post I know nothing about suppressors except they are expensive & the ATF has to be involved. I started looking at putting together a super-quiet 300 BO upper for shooting hogs around a feeder. Normally I put .222 bullet into a hog's noggin then wait & hope more hogs come back. When I starting thing about converting one of my uppers, I got sticker shot at the cost! My buddy has a .308 bolt gun that is suppressed. Could a heavy bullet reduced load be reloaded to be sub-sonic & suppressed in the 308? TIA

Just buy a PSA or Aero upper or build one. Everyone knocks PSA and Aero but I haven't had any issues. Haha my little blackout SBR upper was about $200. Shoots great. Obviously being a folding backpack SBR with a 7.5" barrel I'm not trying to compete in a bench rest match. But the bullets go where the dot is.

Also check for blem parts. I got an Aero blem lower on my 12.5" and saved a few bucks.

Problem with building AR's though is you start with one then end up with a few.


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[rfroese]

Just buy a PSA or Aero upper or build one. Everyone knocks PSA and Aero but I haven't had any issues. Haha my little blackout SBR upper was about $200. Shoots great. Obviously being a folding backpack SBR with a 7.5" barrel I'm not trying to compete in a bench rest match. But the bullets go where the dot is.

Also check for blem parts. I got an Aero blem lower on my 12.5" and saved a few bucks.

Problem with building AR's though is you start with one then end up with a few.


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I have actually done exactly this. Bought a PSA 8.5" 300 blk upper years ago.

Is it fun? Sure, but even with subs its too dang loud. Suppressed gas guns are just loud in general. Now, my single shot 300 blk H&R handi-rifle, that thing was stupid quiet with my suppressor.

 

[peaches]

Titegroup and 170g RN 30-30 bullets. Start with Hogdens subsonic data.