Thoughts on subsonic 300 Blackout for deer hunting

[Yondering]

Great job!

I have experience with the Lehigh bullets and I'm curious as to what your twist rate and barrel length are. Because they play big factors when it comes to sub loads.

My current go to recipe is
9.8gr of H110
2.275 COAL
Get 1055 fps all day
Sub moa at 50yds.

My gun set up is a Remington 700 pistol with a 9 inch custom barrel
Have a 1/7 twist but wish I'd went with a 1/5.

Congrats on the deer 👍

If you're using a bolt action and not an AR then you can make your loads a good bit quieter with a faster powder. Only reason magnum pistol powders are used for 300 Blk subsonics is to cycle an AR15 action; you don't need that extra gas in a bolt gun. Try powders in the burn rate range between Bullseye and Unique for quieter bolt gun loads.

Also, dropping the speed down to 1,000 fps or lower will make your loads quieter as well.

[Rob]

Great info, thanks!  I'll work with that powder once the season is over.

I figured minute of deer for sub 100 yard shots was good enough for now. 

[Goshawk]

Ballistically speaking, it's about a power twin to the 357 mag out of a rifle, and much less than the old 30/30.  Matched with properly with bullets that expand at the slow velocities it does ok under 100 yards under ideal conditions for medium game; just like the 357 mag.  I've taken three black-tails with it when we had permission to carry the round in our patrol cars.  It was later dropped as a patrol rifle round due to it's inability to penetrate even low rated body armor.

There are a whole lot better choices for big game in the SUR (sport utility rifle) platform than the 300 whisper for hunting in the Pacific Northwest from 6.5 Grendel to the 308/223, 450 Bushmaster and any of the WSSM based cartridges. What you don't want to be is under powered should you get a nice shot at a big bear or buck. 

Just my .02 of experience.

[Rob]

Appreciate the insights and i agree, it is like a heavy pistol round.

The reason for the blackout is the specific location i am hunting.  Small private tree farm about 150 acres in size.  The landowner has neighbors with kids and does not want bullets leaving the property so he has limited hunting to muzzle loader and archery.  I was given permission to use a subsonic 300 BO.  Otherwise I would be on my 7mm RM!

I enjoy the AR platform but for many reasons my personal preference for hunting is a nice bolt gun.  Perhaps i now have a soild reason to invest in a new threaded bolt gun in 300  blackout!  There is a hole in the safe about that size...

[JohnVH]

A subsonic blackout is something everyone needs, its just so fun!!

[Goshawk]

I'm a fan of the 45acp suppressed. Lots of impact at a very reasonable cost; not for deer of course, but just doing some smooth shooting.

[h20hunter]

Found it...


@jrebel