16"  supersonic 300blk

No. The ft/lb of energy is probably the same, but not the muzzle velocity.

Barnes TSX is a great bullet.  Just have to make sure you pick the right weight so you can keep velocity high to open it up.

OP here. Thanks for all of the input. I will go with the 10.5" 300BLK and use supersonic rounds for hunting. For multiple reasons I want to build a 300BLK SBR (or at least a pistol with the SIG arm brace) and it would be great to use it for hunting, too. Thanks for posting the pic -- good aspirational build.

But you don't have any barrels for sale?

So much in this thread that in reality means nothing.  "better" is subjective.  By any other measure then we need a 20mm Vulcan to hunt Florida white tail.

Spout of numbers all you want, velocity, energy, what ever.  I have found in most cases these numbers are academic any ways.

Take a 5.56, with a good hunting bullet, and then a 6.5, a 6.8 a 300 blk and a 7.62x39 of equivalent weight and put them in the hands of 95% of shooters and or hunters and they won't be taking a  shot past 100yds anyways.  And frankly won't be able to tell much difference when they shoot any of them. Energy and velocity mean crap if you cannot put your shot where it needs to go.  And the deer won't know or care if you miss.

I was told I need 900ft lbs of energy to kill a North Carolina White tail.  Well I proved that was crap, And a number pulled out of some guys butt, that thinks he has to justify his 300 weatherby magnum to shoot deer at 50 yds.

the 300 blk is a very effective hunting round. Keep it within the individual hunters skills and it will do the Job

If you hunt thick woods like I do a subsonic 300 blk will do the job just fine.  10 deer in my freezer have proven that.  Using both expanding and non-expanding rounds.

For the guy that said you cannot shoot light weight subs safely.  I have about 2 dozen squirrel and rabbit that would completely disagree with you. Now you cannot shoot them and make an AR15 function, but they are great in a bolt gun or in a single shot.  I would not use the lightweight subs for a deer, unless I knew I was going to take a neck shot.

I will go ahead and state that when one of you claim a long shot on a deer, I automatically deduct at least 40% from your distance claimed, nothing personal, but I have been around to many guys who cannot estimate distance and who cannot correctly use a laser range finder.  crud if anything I underestimate my shot distance and over estimate the distance the deer travels before it hits the ground.

to the OP, either will do the job you want it to.  Frankly so will a lot of other rounds that were mentioned.  Pick the one you want and learn it, shoot it and know what your hunting bullet is going to do.

the fact is you do not need a 300 super duper magnum going mach 4, dislocating your shoulder, blowing out your ear drums, being heard 2 counties over, turning 1/4 of the deer into a fine red mist, just to take a shot a 50 yds, so you can say he was DRT.

Respectfully, there "were" two black bucks living just outside of Junction, Texas last year that would disagree. 220 gr Remington Subs used on both. One at 68 meters, the other at 101 meters. Neither one of them took more than 5 steps before falling over. Neither bullet exited but their lungs were liquefied.

No no no. It just wont work.  ARFCOM ballistics experts keep telling me that.

As another idea I bought the 9" AAC 300BLK upper and really, really like it.

Texas deer falls under the varmint category, slightly bigger than a fat coyote up by us

Not really surprising, that round has more retained energy down range than a 357mag, and those have no issues killing deer out to 100yds from a pistol.  I don't think anyone here is arguing its effectiveness on deer, but some people claim it to be something it isn't.  A "great" super sonic 30cal caliber.



Was that him BSing around, or do you guys actually have that kind of rule in the regs?

Mike.

Over the years i have had hunters in person and on hunting forums that you need 700 to 1000 plus ft lbs of energy to ethically harvest deer. And. They were serious.

Either round will kill a deer if you hit them.  Therefore, hitting the damn thing in the first place from 0-200 yds is the #1 priority.  

Real difference is the amount of drop considering a 300BLK will be much slower and therefore have an 8" drop at 200 yds.  That will have to be compensated for.   .223 is essentially flat out to 200 yds.

But in all seriousness, everyone has a 16" in .223.  Be different and go the SBR route.

I bought a 8" MAS Defense 300BLK barrel and a pistol buffer tube. It is on!

I don't feel like you've done much research. At all, that is.

.308 110vmax BC is .290
http://www.hornady.com/store/30-Cal-.308-110-gr-V-MAX/

The .224 60gr vmax (hornady doesn't have a 62gr as you've exampled) is .265
http://www.hornady.com/store/22-Cal-.224-60-gr-V-MAX/

You go up to a 125SST in the .308 and BC climbs even higher to .305, if you're going to have a debate at least research some of the options before you spout it all off as fact. You ladies and your tit for tat crap with calibers are always fun to spin up. You've so far used incorrect velocities, incorrect BC, and an obvious caliber bias to entirely derail OP's thread.

To the OP: I have both an 8.5" .300BO, I use 125SST's and 18.5gr of 4100 powder. It's lights out  all day long and would take it hunting 90% of the time on a spot and stalk hunt due to its minimal size and heft. Plenty of energy available, and roughly similar performance to a 30-30 rifle. 30-30's have killed elk for years, a good shot will put down most things with the blackout.

I also have an 18" 6.5 Grendel. 27.5gr of H335 behind a 123gr SST. Favorite gun/round of mine personally. It carries like a 5.56 gun (something an AR10 will not do) and has similar energy to a .308 after 500 yards. Mine often goes 1000 yards, accurately and I've had no problems with the gun. Love it to death.

I also have a 5.56 gun and think its lethargic and is under gunned for most of the things I do with firearms. I see others using theirs to great results, I choose not to because I have lots of other options. Buy the one you like, want to pay to feed, and will shoot often enough to become proficient with. Enjoy.

A Blackbuck is an antelope, not a deer.