Any thoughts on a 300 Blackout?

[DaemonAssassin]

Me to, I took my daughter last year for the youth hunt and she bagged this nice spike buck with her 300BLK.

View attachment 155090

I'm hoping my dad sees that the 300 is just the same as a 30-30, when I put down the deer.

 

[Klunatic]

I'm hoping my dad sees that the 300 is just the same as a 30-30, when I put down the deer.

It does a nice job on the deer. I really like the Barns TTSX 130gr for hog and deer, loaded with lil'gun.

 

[DaemonAssassin]

It does a nice job on the deer. I really like the Barns TTSX 130gr for hog and deer, loaded with lil'gun.

I zeroed mine with 110gr VMax and was highly impressed with the group I got from a factory load.

I'll check out your recommendation, if I can find any factory ammo. Going to shoot factory ammo for a bit, before sourcing over to hand loss for hunting. Breaking in the barrel and all that.

 

[BradMacc82]

The 110gr Vmax at 2300+fps, gives really nice groups.

Made me smile when the 16" and 12.2" 300BLK would print well under an inch, consistently.

 

[ironpony]

What is the best/most popular zero for swapping between sub and super ammo? I want to say super @ 35yds giving subs a - .. damn, not sure. Is there a thread on this or should there be one?

 

[DaemonAssassin]

What is the best/most popular zero for swapping between sub and super ammo? I want to say super @ 35yds giving subs a - .. damn, not sure. Is there a thread on this or should there be one?

Go get a BDC scope and zero with supers at 100. The bottom hash on the BDC will be your hold for the bull at 50 yards. It is pretty insane how fast they drop.

 

[jimbobborg]

Go get a BDC scope and zero with supers at 100. The bottom hash on the BDC will be your hold for the bull at 50 yards. It is pretty insane how fast they drop.

Almost like a handgun bullet

 

[DaemonAssassin]

Almost like a handgun bullet

SERIOUSLY!!!!

 

[fidelity]

Here's a few pics to give a sense of the drop using a Ruger American 300 BLK.

In the second and third pics, the ammo box in the upper left are subsonics (300 AAC Blackout 220gr Subsonic Sierra SMK HPBT from FTW, Inc).

The rifle was zeroed at 100 yds with the Fiocchi (center box in the second pic).

In the third pic, I'm showing you the 50 yd target because keeping the subsonics on paper at 100 yds was inconsistent.

The target was horizontal (landscape mode) and the boxes of ammo for each 5 shot group radiate out from the groups. The unfired rounds on the target are pointing to my POA.

Whereas the supersonic ammo at this distance was printing 1.5 inches high, the subsonics (having the mass and velocity of a handgun round - even if the ballistic coefficient is different) dropped like handgun rounds, about 5.5 inches at 50 yards.

 

[DaemonAssassin]

Here's a few pics to give a sense of the drop using a Ruger American 300 BLK.

In the second and third pics, the ammo box in the upper left are subsonics (300 AAC Blackout 220gr Subsonic Sierra SMK HPBT from FTW, Inc).

The rifle was zeroed at 100 yds with the Fiocchi (center box in the second pic).

In the third pic, I'm showing you the 50 yd target because keeping the subsonics on paper at 100 yds was inconsistent.

The target was horizontal (landscape mode) and the boxes of ammo for each 5 shot group radiate out from the groups. The unfired rounds on the target are pointing to my POA.

Whereas the supersonic ammo at this distance was printing 1.5 inches high, the subsonics (having the mass and velocity of a handgun round - even if the ballistic coefficient is different) dropped like handgun rounds, about 5.5 inches at 50 yards.

It was truly surprising to see how the subs dropped, compared to how a super does. Definitely an eye opening experience.

BTW, did you get your 300 upper out to the range, to test it out?

 

[fidelity]

...

BTW, did you get your 300 upper out to the range, to test it out?

Trying this next weekend. Depends on weather and kids, but I'm raring to test the 300 BLK build probably with the Ruger American in parallel.

 

[DaemonAssassin]

Trying this next weekend. Depends on weather and kids, but I'm raring to test the 300 BLK build probably with the Ruger American in parallel.

Let me know if you want a spotter.

 

[fidelity]

Sent you a text.

 

[ironpony]

Is the Vortex Strike Eagle with 5.56 drops a terrible idea? 1 - 6x for under $350 I would like to figure it out.

With my 110 gr. vmax load zeroed my 220 gr. loads drop 8" from that @ 80 yds.

 

[BradMacc82]

Not a 'terrible' idea, but for the money, the Nikon P300 is probably going to suit you better since it's reticle is matched for 300BLK ballistics.

 

[Mike]

Mine is a 16" barrel (w/pistol gas system) with a YHM Phantom flash hider. I love the damn thing. I have printed 1/2" at 100 yards with it.

Which barrel twist does best for sub and super sonic rounds in the same upper?

I have a friend at the office who's been helping me 'learn the ropes' about firearms. He's built a couple of AR 15s from 80% lowers and at at least 1 300 blk. He likes the uppers from this place
https://www.hardenedarms.com/pageHome

He said to watch for sales on their site and to look for them on places like eBay too. Anyone here using their parts? Opinions?

 

[friendlyhippo]

In the third pic, I'm showing you the 50 yd target because keeping the subsonics on paper at 100 yds was inconsistent.

Seriously?

If that gun can't keep rounds on paper at 100 yards (assuming a reasonably decent sized target of 8-10" per side) then there's something VERY wrong with how it shoots. I would be sending that rifle back for diagnosis if it can't keep decent factory ammunition within an 8-10 inch spread at 100 yards.

 

[DaemonAssassin]

Which barrel twist does best for sub and super sonic rounds in the same upper?

I have a friend at the office who's been helping me 'learn the ropes' about firearms. He's built a couple of AR 15s from 80% lowers and at at least 1 300 blk. He likes the uppers from this place
https://www.hardenedarms.com/pageHome

He said to watch for sales on their site and to look for them on places like eBay too. Anyone here using their parts? Opinions?

Mine is a 1:7.

Build an AR, once you do, you'll never buy one from a store ever again.

 

[fidelity]

Seriously?

If that gun can't keep rounds on paper at 100 yards (assuming a reasonably decent sized target of 8-10" per side) then there's something VERY wrong with how it shoots. I would be sending that rifle back for diagnosis if it can't keep decent factory ammunition within an 8-10 inch spread at 100 yards.

I was working through different mags with different loadings at the end of my time at the range. The supersonic rounds grouped nicely at 100 yds. I realized after the fact that my subsonic dropped too low to catch them on paper despite my guesstimated holdover. If I checked the spotting scope mid mag, I would have adjusted. Based on how tight the subsonic rounds grouped at 50 yards, I'm not terribly worried. Moreover, I'll be spending more time this weekend shooting subs at distance so might update this or another thread.

 

[friendlyhippo]

Ah, so it was just the drop from the sight-in on a different load. Gotcha. I was reading that to say that the rounds just weren't grouping worth a damn and not even hitting paper. Next time aim for the top of the target.


FWIW, my rainier-barreled blackout AR will put 5 subsonics around 1.5" at 100, which is plenty good enough for me. More load tailoring would probably improve that, but I don't intend for subs to be used beyond 100 very far, so that's more than adequate.