300 Blackout for White tail

[Kaldor]

125 gr ballistic tips do 2400 with a max load of H110 in my 16” 300 blk. Lil gun did 2500 in mine with no pressure signs at 50 deg, but they were dangerously overpressure when I tested them at -20 F so I will never use lil gun again.

I am actually at the bench loading some 125 gr accubonds in 7.62x39. I was able to get 2600 FPS from my 16” AR15 with them today with cfe blk.

Same issue I seen with LilGun, at the top it get can hit peak pressure pretty fast. And I didnt like the fact it has a tendency to burn out throats on barrels. So I loaded the last of mine into light loaded plinking ammo and moved on. W296 and H110 dont seem to have that issue.

Ive heard CFE Black can get peaky quick too. Whats your experience on that?

Ive also kicked around trying H4198 which is about the slowest powder acceptable for 300 BO.

 

[Godsgunman]

As has already been said, 110-140gr bullets are what you need for deer from a 300 BO 10.5 inch barrel or shorter. I was planning on using a 120 gr out of my 10.5 inch but made my quota in archery so maybe next year.

 

[someguy2800]

Same issue I seen with LilGun, at the top it get can hit peak pressure pretty fast. And I didnt like the fact it has a tendency to burn out throats on barrels. So I loaded the last of mine into light loaded plinking ammo and moved on. W296 and H110 dont seem to have that issue.

Ive heard CFE Black can get peaky quick too. Whats your experience on that?

Ive also kicked around trying H4198 which is about the slowest powder acceptable for 300 BO.

This is what happens when you shoot a max load of lil gun at -20 deg F. It showed no pressure whatsoever at normal temps. The case heads are expanded about .050" bigger than original.



I don't have enough time with cfe blk yet to say one way or another but it looks and smells like lilgun so I suspect they are similar formulas.

 

[Dill]

Wow, usually that happens when it gets hot, not cold.

 

[someguy2800]

Wow, usually that happens when it gets hot, not cold.

I know, color me surprised! H110 is extremely stable in velocity from 70 F to -30 F in the 3 cartridges I have tested it in. Thats not supposed to be either.

 

[Tango2020]

I got my Barnes 110 Txs in and loaded some working up to the 20.1 gr max. I was still just under 2100 fps at the max and not satisfied with the grouping as of yet. I seated to the cannelure which was an AOL of 2.250 which is what the on line Barnes info calls for but that is out of a 16" barrel not 8.5" but 300 FPS seems significant. I will do further testing then test for expansion though 2100 FPS should do it.

 

[dbmjr1]

I'm using a Handi Rifle with a 16.5" barrel. I'm developing a load for whitetail, up close. I'm using projectiles designed for the .30 WCF. (.30-30 ). I'm pushing them fast enough, out of a 1:7 twist barrel, to expand inside of 100 yards. These have a horrible BC, and shed velocity quickly. I'm intending to use them from a stand that is 50 yards from the feeder. I probably won't take a shot at 75 yards, even with good glass.

 

[someguy2800]

They are expensive but a nosler 125 ballistic tip or accubond will expand well below 2000 fps and they are quite slippery.

 

[Icky The Great]

I am running a custom built .300Blk for deer hunting built on an old Savage 12 action. I am shooting subsonic loads specifically. In PA you're most often going to have about 70yrd shot on whitetail. I have my blind set up with the optimum and average shots around 70 yards, longest spot I have for clean shot is 105yrds. I am using hard cast 210gr loaded to around 1000-1050. If I was using an AR platform in supersonic range, I would strongly consider Bill Wilson's 300Ham'r. However the OP was curious about bullets for the Blackout at supersonic speeds and I would suggest a Speer TNT HP or a reasonable soft point projectile. It won't be MATCH quality but it's not a match and you're shooting Minute Of Whitetail (about 18" kill zone and a 1" or 2" group will kill it just as dead at 100 yards.)

 

[jmorris]

Wouldn't 300BLK and 30 Carbine be near enough to make no difference on deer? I don't really have much experience with 300blk, but 30 carbine can be effective at limited range, say inside 100yds. Correct me if I'm wrong, but wouldn't 30 Carbine, 300BLK and 357mag be all in the same ballpark for deer hunting?

The 357 has good bullet choices for the speeds they run and bad ones too, just like the 300 blk.

That said lots and lots of deer have been killed over the years with round balls, that are not known for great expansion.

 

[Glockula]

I am using 125 Nosler BTs loaded over Lilgun in new starline brass and cci srp.

No attempts at killing deer with them yet. Most of my stands offer 350 plus shot opportunity.

I share the concern on Lilgun burning throats out but 50 Nosler 125s should last 10 years. I don't think it is a concern unless I use it for practice or plinking rounds. Here in ENC I am worried about heat, not cold, so that really isn't an issue .

I also bought some factory Federal 150s advertised for deer. I find it interesting they went with 150s . Although it's obviously a newer kind of projectile

 

[someguy2800]

I am running a custom built .300Blk for deer hunting built on an old Savage 12 action. I am shooting subsonic loads specifically. In PA you're most often going to have about 70yrd shot on whitetail. I have my blind set up with the optimum and average shots around 70 yards, longest spot I have for clean shot is 105yrds. I am using hard cast 210gr loaded to around 1000-1050. If I was using an AR platform in supersonic range, I would strongly consider Bill Wilson's 300Ham'r. However the OP was curious about bullets for the Blackout at supersonic speeds and I would suggest a Speer TNT HP or a reasonable soft point projectile. It won't be MATCH quality but it's not a match and you're shooting Minute Of Whitetail (about 18" kill zone and a 1" or 2" group will kill it just as dead at 100 yards.)

No whitetail in the world has 18” lungs. More like 10”x8”. But I get your drift, it will kill if you do your part and get the range right.

Don’t expect instant kills with that, it will be like shooting them with a bow, it might take awhile for them to bleed out and die, and you’ll likely need to do some tracking. Leave them be for a bit after the shot.

 

[beeenbag]

I’m not sure why so many people hate on the 300 for deer hunting. You can get loads that closely rival the 7.62x39, a round many tout as “good little hunting round” but sneer at the same size bullet going less than 100 FPS slower.

As with any round, it’s all about bullet selection. My daughter (9) is hunting with a 300 this year. Mainly because the AR platform can be made to fit her small size better but to me, that is where the 300 shines. Good performance on deer with the right bullets and in a platform that can be made to fit anyone.

 

[300Whspr]

I've been using the .30-221 in my TC Contender Super 14 since the early 1990's back when it was originally called the 300 Whisper-- I kinda cringe when I see it called by it's "new" name. For deer, I'd recommend the 125gr Nosler Ballistic Tip or the Speer 125gr TNT bullet over a max charge of H110/W296. Have had good performance out of both bullets.

 

[Bfh_auto]

I missed the bullet weight and velocity in the OP. But my point holds, this is a less than ideal load for deer
357 mag = 624 ftlb
300blk OP load = 715 ftlb
30carbine = 929 ftlb
30-30 = 1827ftlb
So being that plenty of people take deer with 357mag, I can't say that the OP's load would not, but it would definitely need to be pretty close in. As opposed to, 30-30, Now at that point you have a classic deer round. Everyone will have their minimum threshold for what is an effective deer cartridge, so I'll put it this way...I've hunted with an M1 Carbine and been comfortable when I know my range will be 50-75 yards, I would not be comfortable with 357, so that puts the OP's load in an iffy spot for me personally.
Now if you were you were to load that 300blk with a 110gn or 125gn bullet and push it up to around 2000fps, now you have something that gets to my minimum threshold for deer.

357 is a larger diameter and the bullets are designed to expand at the velocity they are shot at. XTP's in a 30 carbine would make it a decent close range gun.
The issue is the OP is using the incorrect bullet, not the wrong cartridge. If one of the suggested bullets are used, it would do fine to 125 yards give out take depending on shot placement.
Kinetic energy isn't a great defining factor in whether a cartridge will work.