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  #1  
Old 04-20-2009, 8:28 PM
sonicbuff sonicbuff is offline
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Default Ballistics and Trajectories of 5.45x39 (7N6)

I've been surfing high and low to find the ballistic and trajectory table of the Warsaw 7N6 round (5.45x39), but had no luck.

Anyone has any ballistic info on this particular cartridge ?
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Old 04-20-2009, 8:41 PM
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There was a video on youtube about it VS 5.56. Check it out.
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Old 04-20-2009, 9:00 PM
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Originally Posted by Standard View Post
There was a video on youtube about it VS 5.56. Check it out.
I need the ballistic info for target acquisition and range estimation. I've read enough about this round but have no idea how to estimate its range.

Last edited by sonicbuff; 04-23-2009 at 4:15 AM..
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  #4  
Old 04-20-2009, 10:45 PM
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Originally Posted by sonicbuff View Post
I need the ballistic info for target acquisition and range estimation. I've read enough about this round but has no idea how to estimate its range.
I don't think anyone makes 5.45 that is accurate enough to be worrying about range estimation!
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Old 04-20-2009, 10:54 PM
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Originally Posted by hybridatsun350 View Post
I don't think anyone makes 5.45 that is accurate enough to be worrying about range estimation!
Well, at least we need to know the BDC in order to sight our target. We don't just go boom and hope that it might hit something.
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Old 04-22-2009, 3:38 AM
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I found it. For the 7N6 in particular, following are the what needed for the calculator:

Ballistic Coefficient: 0.156 G7
Caliber: 5.450 mm
Bullet Weight: 52.47 gr
Muzzle Velocity: 900.0 m/sec

For the point blank radius of 3", the range is 250yds at about 550ft/lb. That's not bad for a ".22" cartridge.

...And don't forget that it can tumble with pitch and yaw way earlier than the 7.62x39 when it hits the target.... may be twice if it's a human target.
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Old 04-22-2009, 5:05 AM
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How does all this compare to a 5.56 of similar quality (not match/HD ammo, etc)?
I'm curious because my AR is 5.45 exclusively.
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Old 04-22-2009, 5:20 AM
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Quote:
Originally Posted by Standard View Post
How does all this compare to a 5.56 of similar quality (not match/HD ammo, etc)?
I'm curious because my AR is 5.45 exclusively.

Hey Standard, I remember your AR from the Panoche Hills clean up. Sweet looking rig you have. Just for your information I have contacted David at riflegear about doing some magazine conversions for CA. compliance. After he does mine he may look into stocking 10-30rd mags for the 5.45 x 39. Sure would make life easier. I would be very interested in more information myself as I have a S&W MP15R waiting to get out of DROS jail up at JK Supply.
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Old 04-22-2009, 6:41 AM
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Oh hey there Bob, thanks for the compliments. I'm really happy with mine, I'm sure you will be too. Mine's a CMMG lower w/ the S&W upper.
I just got some more mags in to rebuild to 10 rounds, but if I ever need anymore, I'll contact Riflegear, thanks for the heads up.
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Old 04-22-2009, 7:09 AM
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Quote:
Originally Posted by hybridatsun350 View Post
I don't think anyone makes 5.45 that is accurate enough to be worrying about range estimation!
http://world.guns.ru/sniper/sn40-e.htm
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Old 04-22-2009, 8:53 AM
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Read the first paragraph of the description. He supports my point.
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Old 04-22-2009, 11:21 AM
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Quote:
Originally Posted by sonicbuff View Post
I found it. For the 7N6 in particular, following are the what needed for the calculator:

Ballistic Coefficient: 0.156 G7
Caliber: 5.450 mm
Bullet Weight: 52.47 gr
Muzzle Velocity: 900.0 m/sec
EEK, really? .156 BC? But they look so long and aerodynamic

For comparison purposes, a quick google search comes up with M193 being either .243 or .269, and M855 green tip at .304.

Looking at the Federal catalog:
- The 55gr FMJBT is .269,
- The 62gr FMJBT is .307,
- The 69gr SMK BTHP is .301,
- The 77gr SMK BTHP is .372

I had no idea the 5.45 projectiles were so inefficient. This brings up a different question.

- Is anyone making quality match grade ammo in 5.45x39mm?
- Or for that matter is anyone making quality brass? BTHP bullets in 5.45mm?
- Is there any reason this round couldn't achieve .223 accuracy?

-Pete
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Old 04-22-2009, 12:59 PM
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5.45X39 is a fairly accurate round. I remember reading elsewhere someone claiming that he was able to get 1.5 MOA at 100 yards fired from a Russian VEPR. I assume Bulgarian Ak74 should be able to do the same. Old century Polish Tantals are known for poor accuracy due to a barrel issue or something like that.
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Old 04-22-2009, 2:27 PM
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Quote:
Originally Posted by sb_pete View Post
- Is anyone making quality match grade ammo in 5.45x39mm?
-Pete
No


Quote:
Originally Posted by sb_pete View Post
- Or for that matter is anyone making quality brass? BTHP bullets in 5.45mm?
-Pete
No and No
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Old 04-22-2009, 2:54 PM
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Quote:
Originally Posted by sb_pete View Post
EEK, really? .156 BC? But they look so long and aerodynamic

For comparison purposes, a quick google search comes up with M193 being either .243 or .269, and M855 green tip at .304.

Looking at the Federal catalog:
- The 55gr FMJBT is .269,
- The 62gr FMJBT is .307,
- The 69gr SMK BTHP is .301,
- The 77gr SMK BTHP is .372

I had no idea the 5.45 projectiles were so inefficient. This brings up a different question.

- Is anyone making quality match grade ammo in 5.45x39mm?
- Or for that matter is anyone making quality brass? BTHP bullets in 5.45mm?
- Is there any reason this round couldn't achieve .223 accuracy?

-Pete
Actually, I've read that the modern AA 6.5 Grendel is a big brother of the "Grendelized" 5.45x39. AA also has an upper for this round by the name ".21 Ginghis"
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Last edited by sonicbuff; 04-22-2009 at 4:14 PM..
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  #16  
Old 04-22-2009, 3:05 PM
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Quote:
Originally Posted by sonicbuff View Post
For BC, the smaller the number the higher efficiency.
What are you smokin?
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Old 04-22-2009, 3:09 PM
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Quote:
Originally Posted by hoozaru View Post
5.45X39 is a fairly accurate round. I remember reading elsewhere someone claiming that he was able to get 1.5 MOA at 100 yards fired from a Russian VEPR. I assume Bulgarian Ak74 should be able to do the same. Old century Polish Tantals are known for poor accuracy due to a barrel issue or something like that.
It would be interesting to take an SSG-82 and see what it is capable of.



-- Michael
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Old 04-22-2009, 3:19 PM
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Well this is not very encouraging . I hope the rifle was just a piece of crap and not the round.

Who ever wrote the article had some spelling problems.

Not too much known about this quite rare rifle. It was manufactured in 1980s for East Germany Police and Airport Security units. It is based on small-bore match rifle, but chambered for somewhat odd (for the sniper use) cartridge, 5.45x39mm, which intended for use in AK-74 Kalashnikov assault rifles. The accuracy of the rifle is not too great, say, 2 or so MOA with good ammo, and even worse with standart miliotary issue ammo.
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Old 04-22-2009, 4:01 PM
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Quote:
Originally Posted by BroncoBob View Post
Well this is not very encouraging . I hope the rifle was just a piece of crap and not the round.

Who ever wrote the article had some spelling problems.

Not too much known about this quite rare rifle. It was manufactured in 1980s for East Germany Police and Airport Security units. It is based on small-bore match rifle, but chambered for somewhat odd (for the sniper use) cartridge, 5.45x39mm, which intended for use in AK-74 Kalashnikov assault rifles. The accuracy of the rifle is not too great, say, 2 or so MOA with good ammo, and even worse with standart miliotary issue ammo.
He's Russian and he can speak and write in English better than I can in Russian!

The problem is that none of the 5.45 is made to be accurate. It's not the rifle, it's the ammo.
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Old 04-22-2009, 4:13 PM
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Quote:
Originally Posted by hybridatsun350 View Post
What are you smokin?
No, I'm not smoking, just lack of sleep.

I'm standing corrected.
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Old 04-22-2009, 7:38 PM
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Originally Posted by hybridatsun350 View Post
The problem is that none of the 5.45 is made to be accurate. It's not the rifle, it's the ammo.
Tell that to the tens (maybe hundreds) of thousands of Mujahideen soldiers buried 6 feet under in Afghanistan.
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Old 04-22-2009, 7:45 PM
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From my AR-15, it is accurate enough. I don't have any problem hitting a 12" plate at 100 yards. I did for a couple minutes, but I hadn't adjusted my new irons yet
I haven't tried shooting tight groups with it yet, but it seems no less accurate that regular practice ammo was when I was running a 5.56 upper.
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Old 04-23-2009, 12:16 AM
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Quote:
Originally Posted by Standard View Post
From my AR-15, it is accurate enough. I don't have any problem hitting a 12" plate at 100 yards. I did for a couple minutes, but I hadn't adjusted my new irons yet
I haven't tried shooting tight groups with it yet, but it seems no less accurate that regular practice ammo was when I was running a 5.56 upper.
True, for carbine classes, these could be nice cost savers as 5.45x39 is still like 1/4 the cost of bulk .223. It would be fine I imagine for the kind of accuracy necessary for that kind of shooting. the 5.45 uppers would then also allow you to use and practice the same manual of arms. The savings could pay for itself in a couple thousand rounds or 1-2 classes.
-Pete
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