300 BLK MATCH Ammo that is good out to 800 Yards...
Posted: Mon Oct 23, 2017 2:23 pm
I have been working on this project for a few months with dellet and was able to confirm our findings this weekend.
As dellet's signature reads, "300 Blackout, not just for sub-sonics."
This project started off when I was given some 154 grain G9 bullets by a friend of mine.
He purchased some for his .308 Win and later realized that they would not produce the results that he was looking for with his barrel.
I recognized that the twist rate of a 1:7 300 BLK barrel could work well and the documented ballistics of the lathe turned brass G9s are off the chart.
At that time, I reached out to dellet to socialize the idea of a long range precision capable load for the 300 BLK.
My lofty goal was to ring steel at 600 yards, just as a novelty at my regular long range training sessions.
For those that have never heard of the G9 bullets:
http://www.g9bullets.com/product/compet ... tch-grade/
https://youtu.be/Bp1A7q93QGU
Dellet ran some possibilities through "Quick Load" and I poured over some old 300 Whisper(r) load data.
After much discussion, I sent dellet a few of the G9 bullets to test with. (He has a variety of 300 BLK platforms for testing.)
Fortunately, neither one of us blew up our rifles and we were able to gather accurate data using our Lab Radar systems.
Both of us were able to confirm the pressure thresholds and captured in flight velocities to determine actual BC.
We both observed a staggering level of accuracy that was well under 1/2 MOA.
This past weekend, I took my newly designed loads to the range where I had steel targets setup all the way to 1,000 yards.
My goal was to try and get to 600 yards.
I went from 300, to 400, to 500, then 600, with first round hits on each target.
Then I said, what the hell and kept going to 700 & 800 yards.
First round hit on 700, held a bit for wind on 800 and missed.
Held dead on and boom... ding!
Did it two more times and had to run home.
Hit a 1/2 size IPSC steel target three times in a row.
My friends said that they never saw me smile like that.
I was completely shocked, as were all of my teammates, who always give me a hard time regarding my 300 BLK fetish.
For dope, I used Applied Ballistics and the BC I calculated with the Lab Radar.
Fortunately, the card was 100% on the money.
Used 1,850 fps with a 10 fps velocity variation, and .465 G1 BC.
Here is the card data with a 100 yard zero:
100 = 0
200 = 3.0 MOA
250 = 6.0 MOA
300 = 9.2 MOA
350 = 12.7 MOA
400 = 16.4 MOA
450 = 20.4 MOA
500 = 24.7 MOA
550 = 29.2 MOA
600 = 34.0 MOA
650 = 39.1 MOA
700 = 44.5 MOA
750 = 50.1 MOA
800 = 56.0 MOA
Now, before everyone gets overly excited about this new super bullet for the 300 BLK, keep in mind the price tag.
The MSRP on the G9 works out to ~ $.80 each for the bare projectiles.
To achieve optimal results, quality brass must be used and it's life will be limited due to the higher operating pressures.
I will not share the exact load, but I will provide enough information for others to develop with.
The rifle that I was using, is my 10.5" Noveske barreled SBR with a 30P-1 suppressor.
Using Hornady 300 BLK Brass, W296 Powder, Fed 205M Primer, G9 Bullet loaded to mag length, and no bell or crimp to the brass.
(Starting load should be no greater than 14.5 grains, work up to desired velocity while observing pressure signs.)
Max safe operating pressure in my 10.5" barrel resulted in an average velocity of 1,850, ES = 19, SD = 6.1 (Outstanding Accuracy).
Dellet's mad scientist lab was able to work up to a velocity of 2,150 fps using a full length barrel.
For those that have been disappointed with the range limitations of the commercially available 300 BLK supersonic ammo, here is your alternative.
It is completely within reason to utilize the G9 out to 600 yards, and if you are ambitious enough, 800 yards is within reach.
Behold, the magic 300 BLK bullet...
As dellet's signature reads, "300 Blackout, not just for sub-sonics."
This project started off when I was given some 154 grain G9 bullets by a friend of mine.
He purchased some for his .308 Win and later realized that they would not produce the results that he was looking for with his barrel.
I recognized that the twist rate of a 1:7 300 BLK barrel could work well and the documented ballistics of the lathe turned brass G9s are off the chart.
At that time, I reached out to dellet to socialize the idea of a long range precision capable load for the 300 BLK.
My lofty goal was to ring steel at 600 yards, just as a novelty at my regular long range training sessions.
For those that have never heard of the G9 bullets:
http://www.g9bullets.com/product/compet ... tch-grade/
https://youtu.be/Bp1A7q93QGU
Dellet ran some possibilities through "Quick Load" and I poured over some old 300 Whisper(r) load data.
After much discussion, I sent dellet a few of the G9 bullets to test with. (He has a variety of 300 BLK platforms for testing.)
Fortunately, neither one of us blew up our rifles and we were able to gather accurate data using our Lab Radar systems.
Both of us were able to confirm the pressure thresholds and captured in flight velocities to determine actual BC.
We both observed a staggering level of accuracy that was well under 1/2 MOA.
This past weekend, I took my newly designed loads to the range where I had steel targets setup all the way to 1,000 yards.
My goal was to try and get to 600 yards.
I went from 300, to 400, to 500, then 600, with first round hits on each target.
Then I said, what the hell and kept going to 700 & 800 yards.
First round hit on 700, held a bit for wind on 800 and missed.
Held dead on and boom... ding!
Did it two more times and had to run home.
Hit a 1/2 size IPSC steel target three times in a row.
My friends said that they never saw me smile like that.
I was completely shocked, as were all of my teammates, who always give me a hard time regarding my 300 BLK fetish.
For dope, I used Applied Ballistics and the BC I calculated with the Lab Radar.
Fortunately, the card was 100% on the money.
Used 1,850 fps with a 10 fps velocity variation, and .465 G1 BC.
Here is the card data with a 100 yard zero:
100 = 0
200 = 3.0 MOA
250 = 6.0 MOA
300 = 9.2 MOA
350 = 12.7 MOA
400 = 16.4 MOA
450 = 20.4 MOA
500 = 24.7 MOA
550 = 29.2 MOA
600 = 34.0 MOA
650 = 39.1 MOA
700 = 44.5 MOA
750 = 50.1 MOA
800 = 56.0 MOA
Now, before everyone gets overly excited about this new super bullet for the 300 BLK, keep in mind the price tag.
The MSRP on the G9 works out to ~ $.80 each for the bare projectiles.
To achieve optimal results, quality brass must be used and it's life will be limited due to the higher operating pressures.
I will not share the exact load, but I will provide enough information for others to develop with.
The rifle that I was using, is my 10.5" Noveske barreled SBR with a 30P-1 suppressor.
Using Hornady 300 BLK Brass, W296 Powder, Fed 205M Primer, G9 Bullet loaded to mag length, and no bell or crimp to the brass.
(Starting load should be no greater than 14.5 grains, work up to desired velocity while observing pressure signs.)
Max safe operating pressure in my 10.5" barrel resulted in an average velocity of 1,850, ES = 19, SD = 6.1 (Outstanding Accuracy).
Dellet's mad scientist lab was able to work up to a velocity of 2,150 fps using a full length barrel.
For those that have been disappointed with the range limitations of the commercially available 300 BLK supersonic ammo, here is your alternative.
It is completely within reason to utilize the G9 out to 600 yards, and if you are ambitious enough, 800 yards is within reach.
Behold, the magic 300 BLK bullet...
