78gn LeHigh Close Quarter Bullet

[Klem]

If you're gonna shoot a 78gr bullet, why not shoot a .223?

I don't know, perhaps because I like the Blackout. Perhaps because I like experimenting. Perhaps because lighter and faster might knock down light-weight animals without the typical over-penetration of this calibre. Perhaps because this is a new bullet and it might be superior to other hunting bullets designed to expand at higher velocities. Perhaps because it will be the flattest shooting of all supersonic Blackout bullets and that will aid accuracy. Perhaps because this is what we enjoy doing and sharing the results on forums.

Or, maybe I should go and shoot .223 like you helpfully suggest...

You're not a crazy person are you?

[JD_H]

lol go through the effort to build a 300 blackout, modify .223 brass to shoot .308 bullets, then shoot .223 weight bullets outta it hahahah. Im all for experimenting and all that jazz, but a .223 is already a flat shooting cartidge that has proven bullets that expand and transfer energy. not crazy just sayin!!

[Klem]

lol go through the effort to build a 300 blackout, modify .223 brass to shoot .308 bullets, then shoot .223 weight bullets outta it hahahah. Im all for experimenting and all that jazz, but a .223 is already a flat shooting cartidge that has proven bullets that expand and transfer energy. not crazy just sayin!!

.223 does not have a subsonic capability.

.300BLK has both subsonic and supersonic capability. The reason I want the fastest, flattest shooting supersonic rounds is;

1. Flatter trajectories aid accuracy (point-and-shoot/judging distance and night-shooting applications).
2. Lighter/faster will extend the effective range by 50-100M, hopefully to .223 effective distances.
3. Less weight of ammunition to hump around (ever compared a 300rd load-out of Blackout to .223?)

If you can improve the supersonic side and have a subsonic capability then that justifies the experimentation.

Now, can we please stick to thread topic...If you have no experience with the 78 LeHigh then it saves me having to filter-out the opinions.

[41Bear]

lol go through the effort to build a 300 blackout, modify .223 brass to shoot .308 bullets, then shoot .223 weight bullets outta it hahahah. Im all for experimenting and all that jazz, but a .223 is already a flat shooting cartidge that has proven bullets that expand and transfer energy. not crazy just sayin!!

Its a CQB for a reason, no over penetration-like not shooting the guy next door-when you shoot that hillbilly trying to kill you after he breaks into your home, the very reason I bought some. A very sane idea ... just saying!!

[41Bear]

Klem I haven't shot any yet, will PM when I do and have results, will shoot out of the 10.5" 1/8 twist barrel of my build. Plan to try H110, Lil'Gun, and 2400 powders with a CCI primer and LC cases will start reloading within a few days.

PS Plan to aim for a 2200fps average and also will test one box of the Lehigh CQB ammo as my base line accuracy/speed figures.

[JD_H]

1. Flatter trajectories aid accuracy (point-and-shoot/judging distance and night-shooting applications).
2. Lighter/faster will extend the effective range by 50-100M, hopefully to .223 effective distances.
3. Less weight of ammunition to hump around (ever compared a 300rd load-out of Blackout to .223?)
.

In CQB, the flatter advantage of a faster bullet are not taken advantage of. A bullet twice the weight has ample velocity to only make a difference of around an inch at 100 yards depending on zero range. 100 Yards is still real far for "close quarter battle". The advantage of a flatter shooting bullet come in to play around like 250+yds. If the bullet is supposed to be for CQB when why even worry about long distances? Just for giggles I calculated 80gr .223 hornady a-max numbers so we can have a logical conversation instead of just hoping. The .223 with its vastly superior BC delivers twice the energy at 500 yards. The 130gr MK319 bullet was 2nd in energy, and the 78gr with its low BC was lowest. The 78gr bullet falls out of the low range of 2350fps, listed on their site, at around 125yds. 300BLK was never intended, in any bullet weight, to be a 500yd cartridge. Now I realize this is the 300 Blackout forum and everyone wants to shoot 300 Blackout, but what is the goal? To shoot 300 Blackout, or to shoot the most capable cartridge for its intended use? It's kinda like trying to make a 12ga shotgun shoot 500 yards. Without taking into consideration charge weight, 218 110gr bullets would only be a pound heavier than 218 78gr bullets, 134 130gr bullets would be 1pound heavier, and 53 208gr bullets would be one pound heavier.

Your Input Variables - Ballistics Results - 300 blackout MK319 130gr bullet
Ballistic Coefficient .277 Velocity (ft/s) 2200 Weight (grains) 130
Maximum Range (yds) 500 Interval (yds) 50 Drag Function G1
Sight Height (inches) 2.5 Shooting Angle (degrees) 0 Zero Range (yds) 30
Wind Speed (mph) 0 Wind Angle (degrees) 90 Altitude (ft) 0
Pressure (hg) 29.53 Temperature (F) 59 Humidity (%) 0.78
Ballistics Results - 300 blackout mk319
Range (yards) Velocity (fps) Energy (ft.-lb.) Trajectory (in) Come UP in MOA Come UP in Mils Wind Drift (in) Wind Drift in MOA Wind Drift in Mils
Muzzle 2200 1397 -2.5 0 0 0 0 0
50 2057 1221 1.3 -2.4 -0.7 0 0 0
100 1919 1063 2.9 -2.8 -0.8 0 0 0
150 1788 923 2.2 -1.4 -0.4 0 0 0
200 1663 799 -1.2 0.6 0.2 0 0 0
250 1546 690 -7.7 3 0.9 0 0 0
300 1437 596 -17.9 5.7 1.7 0 0 0
350 1337 516 -32.4 8.8 2.6 0 0 0
400 1248 449 -51.6 12.3 3.6 0 0 0
450 1171 396 -76.5 16.2 4.7 0 0 0
500 1108 354 -107.7 20.6 6 0 0 0

Your Input Variables - Ballistics Results - 300blk 78gr Lehigh CQB
Ballistic Coefficient .249 Velocity (ft/s) 2800 Weight (grains) 78
Maximum Range (yds) 500 Interval (yds) 50 Drag Function G1
Sight Height (inches) 2.5 Shooting Angle (degrees) 0 Zero Range (yds) 40
Wind Speed (mph) 0 Wind Angle (degrees) 90 Altitude (ft) 0
Pressure (hg) 29.53 Temperature (F) 59 Humidity (%) 0.78
Ballistics Results - 300blk 78
Range (yards) Velocity (fps) Energy (ft.-lb.) Trajectory (in) Come UP in MOA Come UP in Mils Wind Drift (in) Wind Drift in MOA Wind Drift in Mils
Muzzle 2800 1358 -2.5 0 0 0 0 0
50 2617 1186 0.5 -0.9 -0.3 0 0 0
100 2442 1033 2.2 -2.1 -0.6 0 0 0
150 2274 896 2.4 -1.6 -0.5 0 0 0
200 2112 773 1 -0.5 -0.1 0 0 0
250 1957 664 -2.4 0.9 0.3 0 0 0
300 1810 567 -8.1 2.6 0.7 0 0 0
350 1670 483 -16.4 4.5 1.3 0 0 0
400 1540 411 -27.8 6.6 1.9 0 0 0
450 1420 349 -43 9.1 2.7 0 0 0
500 1311 298 -62.4 11.9 3.5 0 0 0


Your Input Variables - Ballistics Results - .223 80gr A-MAX
Ballistic Coefficient .453 Velocity (ft/s) 2800 Weight (grains) 80
Maximum Range (yds) 500 Interval (yds) 50 Drag Function G1
Sight Height (inches) 2.5 Shooting Angle (degrees) 0 Zero Range (yds) 40
Wind Speed (mph) 0 Wind Angle (degrees) 90 Altitude (ft) 0
Pressure (hg) 29.53 Temperature (F) 59 Humidity (%) 0.78
Ballistics Results - .223 80gr A-MAX
Range (yards) Velocity (fps) Energy (ft.-lb.) Trajectory (in) Come UP in MOA Come UP in Mils Wind Drift (in) Wind Drift in MOA Wind Drift in Mils
Muzzle 2800 1393 -2.5 0 0 0 0 0
50 2699 1294 0.5 -0.9 -0.3 0 0 0
100 2600 1201 2.3 -2.2 -0.6 0 0 0
150 2503 1113 2.8 -1.8 -0.5 0 0 0
200 2409 1031 1.9 -0.9 -0.3 0 0 0
250 2316 953 -0.5 0.2 0.1 0 0 0
300 2225 880 -4.5 1.4 0.4 0 0 0
350 2137 811 -10.3 2.8 0.8 0 0 0
400 2050 747 -17.9 4.3 1.2 0 0 0
450 1966 686 -27.7 5.9 1.7 0 0 0
500 1883 630 -39.7 7.6 2.2 0 0 0

[JD_H]

from a philosophical standpoint, I would stay away from reloading self defense cartidges. If you ever did have to shoot someone, when you were in court the prosecution would tear you to pieces. They'd say you were at home concocting bullets that were intended on inflicting maximum damage, excessively lethal, and a bunch of other nonsense left wing slandering. We all know a bullet is intended to kill, but in a courtroom they play games with such things. I hand load everything except the cartrides loaded in my weapons at home. Those all have commercial "defense" cartridges in them.

[tXr]

from a philosophical standpoint, I would stay away from reloading self defense cartidges. If you ever did have to shoot someone, when you were in court the prosecution would tear you to pieces. They'd say you were at home concocting bullets that were intended on inflicting maximum damage, excessively lethal, and a bunch of other nonsense left wing slandering. We all know a bullet is intended to kill, but in a courtroom they play games with such things. I hand load everything except the cartrides loaded in my weapons at home. Those all have commercial "defense" cartridges in them.

So you simply purchase the CQB's loaded by Lehigh Defense and use those...... But you are correct about handloads and self defense applications. Even a conventional hunting round loaded with a hotter or weaker load will be used against you in court as an attempt to create greater harm.

[rebel]

The loaded ammo from Lehigh that have in my SBR are devastating on soft targets. Run the numbers all you want, I've shot them in wetpack, water jugs, through simulated walls. They perform as advertised. Coupled with a mag of Barnes Blacktips, it is a formidable HD combo.

[Dolomite_Supafly]

https://www.youtube.com/watch?v=ZGr3tGXOKRI

You can even see a petal bounce off the clay AFTER the bullet hits.

Right there is evidence that these can come apart from centrifugal force.