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Posted: 12/16/2009 9:29:34 AM EST
The .600 Overkill was designed by Robert Garnick of Las Vegas, Nevada. It was intended to be the largest bullet that was able to fit in the CZ550, and was designed specifically for the purpose of elephant hunting. The CZ550 is able to fit 2 cartridges, with slight alterations. With solid brass bullets, the .600 overkill is able to penetrate 6 feet (1.8 m) into solid oak.



http://en.wikipedia.org/wiki/.600_Overkill


Got yer attention yet?


The .600 Overkill fires a 900-grain (58 g) bullet at more than 2,400 FPS, At this level of power, as the bullet spins down the barrel, the rifle is torqued in the opposite direction, often twisting the rifle out of the shooter's hand. Recoil in standard-weight hunting rifles (10 lbs. or less) is far beyond what most shooters will tolerate.


Holy shnikies!


The .600 Overkill case originated from the .600 Nitro Express. The rim was removed from the .600 Nitro Express and a belt was added for headspacing purposes. A 0.640" rebated rim was cut on the case - the same size used by the .505 Gibbs. The case walls were left straight for a 3.0 inch case and a 3.75 inch cartridge overall length. Custom 3 groove barrels with 1:16 twist are made by Pac-Nor Barrels of Brookings, Oregon. A 3-groove barrel with a 1:16" twist was chosen to keep pressures low and permit the cartridge to achieve higher velocities than would be otherwise possible. This scheme seems to have worked because with the same powder charge and bullet, the .600 Overkill achieves about 75 FPS more velocity than the .600 Nitro Express.


Talk about a Brontosaurus bruiser!


In terms of overall energy, the .577 T-Rex may have more, but the idea of shooting solid 600gr .600 Nitro bullets @ 2400 FPS is downright impressive.

...and i'm not forgetting our own howngrown AR15.commer, hubel458, from this thread:
http://www.ar15.com/forums/topic.html?b=6&f=2&t=197253

Originally Posted By hubel458:
I got the 700H 3.25 case feeding from the magazine I set
up on the Montana Rifle Co PH action. It is singlestack with
feed lips similiar to 12ga shotgun clip style magazines I
had here. Works great, shown in first picture. Now it is longer
than regular 12ga mags, but same setup would do for feeding
long brass 12GA FH and long MRC 12ga cases. The
700H 3.25 is 3.9 inches overall loaded length. In picture
case is ready to clear the mag lips, then rim pops up under
extracter as bolt is moving forward. Second picture is
the box used that I made out of two PH boxes. That allowed
for extra height and fit for singlestack and riveted together.
Used a Savage 210 12ga follower and spring. ED

http://www.gunownerstv.com/700phfeed.jpg

http://www.gunownerstv.com/700box.jpg

ZOINKS!

Link Posted: 12/16/2009 9:38:52 AM EST
Well if I ever have an elephant problem, I'll know what gun to get.
Link Posted: 12/16/2009 9:41:32 AM EST
There'll be people now that'll say a.300WINMAG or .30-06 ain't enough.
Link Posted: 12/16/2009 9:43:53 AM EST
Originally Posted By Guess:
Well if I ever have an elephant problem, I'll know what gun to get.


Or if some bastard breaks into the wrong goddam rec room.
Link Posted: 12/16/2009 9:45:41 AM EST
Now that's impressive!
Link Posted: 12/16/2009 9:48:14 AM EST
that is insane, i like a big gun as much as the next guy but damn.

Wouldn't it just be easier to use a .50 bmg with a big ass brake on the end to take up all that recoil?
Link Posted: 12/16/2009 9:56:05 AM EST
.600 overkill, my new truck gun.


Link Posted: 12/16/2009 9:58:12 AM EST
Thousands of elephants have been downed by far less over the years. Not even remotely necessary to damn near kill yourself to shoot one.
Link Posted: 12/16/2009 9:58:44 AM EST
Originally Posted By Sumo6:
Thousands of elephants have been downed by far less over the years. Not even remotely necessary to damn near kill yourself to shoot one.


But it's about the experience!

Link Posted: 12/16/2009 10:00:03 AM EST
meh ill stick to my 460 wby mag.. I can get ammo over the counter..
Link Posted: 12/16/2009 10:02:56 AM EST
So thats the gun I need for when cloning brings back the dinosaurs?
Link Posted: 12/16/2009 10:05:03 AM EST
I don't know if I would trust a wood stock on such a rifle.
Link Posted: 12/16/2009 10:06:35 AM EST
Answer to an unasked question.
Link Posted: 12/16/2009 10:07:11 AM EST
So is that a Destructive Device?
Link Posted: 12/16/2009 10:08:15 AM EST
Originally Posted By DougH9:
I don't know if I would trust a wood stock on such a rifle.


its fine its rather reinforced.. cross pins and extra lugs on the barrel. as long as the screw stay torqed you will be fine..
Link Posted: 12/16/2009 10:10:15 AM EST
Link Posted: 12/16/2009 10:11:26 AM EST
[Last Edit: 12/16/2009 10:14:54 AM EST by jmarkma]
Lemme get this straight all that expense and custom wildcat ammo, not that .600 Nitro is all that common, for 75fps? Or is that a misprint..... off to google.

ETA: Looks like its more like a 400fps gain.
Link Posted: 12/16/2009 10:11:28 AM EST

Originally Posted By CRC:
So is that a Destructive Device?

to you? yes
Link Posted: 12/16/2009 10:12:25 AM EST

Originally Posted By patio87:
Answer to an unasked question.
You've obviously never heard of "extreme" sports
LoL



Why would anyone need such powerful weapons? They should be banned!

Link Posted: 12/16/2009 10:13:02 AM EST
well if jurassic park ever becomes a reality i guess i know what to get... better be a good shot since it will twist the rifle out of your hands after one shot
Link Posted: 12/16/2009 10:14:59 AM EST
[Last Edit: 12/16/2009 10:15:44 AM EST by Jammer1]
Originally Posted By gamesniper:
There'll be people now that'll say a.300WINMAG or .30-06 ain't enough.


Funny you should mention that. Last time I was at the range, there was a guy there shooting a 30-378 Weatherby. When someone asked him about it, he said that he used to shoot a 300 Weatherby but "It wasnt enough"! Dont know what the hell he was shooting but there damn sure isnt anything in Oklahoma that needs that. Especially in a sporter weight rifle. The best part was, I watched him shoot at least 40 rounds, and only put a single round into his 16 X 24" target (100 yards from a bench!)

It doesnt matter how much power you have, if you arent putting it into the boiler room, you might as well be using a fly swatter.
Link Posted: 12/16/2009 10:17:40 AM EST
I don't give too much thought when launching 400 grainers @ 2525 fps out of my .416 Rigby, but I'd probably take a raincheck (and it would have to be enough rain to get Noah to notice) before I shouldered a platform capable of 900 grains @ 2400 fps.
Link Posted: 12/16/2009 10:22:36 AM EST
Sad thing is someone with more money than brains is going to go hunting deer in suburbia with one.
Link Posted: 12/16/2009 10:25:07 AM EST
Originally Posted By Fat_McNasty:
Originally Posted By DougH9:
I don't know if I would trust a wood stock on such a rifle.


its fine its rather reinforced.. cross pins and extra lugs on the barrel. as long as the screw stay torqed you will be fine..


But what about the pistole grip...that is the weak spot.

And if it let go under peak recoil the shooter could get REAL hurt.

Link Posted: 12/16/2009 10:26:55 AM EST
600 grain bullet? How about an 1850-grain 4-bore. For the caliber-inclined, that's a .962!
Link Posted: 12/16/2009 10:28:17 AM EST
[Last Edit: 12/16/2009 10:28:34 AM EST by Kstanton]
Well guys, I'm about to try it out. There's a woods in the middle of my suburb that has deer in it.... wait


Originally Posted By CS223:
Sad thing is someone with more money than brains is going to go hunting deer in suburbia with one.


What's that supposed to mean?!
Link Posted: 12/16/2009 10:30:19 AM EST
Originally Posted By DougH9:
Originally Posted By Fat_McNasty:
Originally Posted By DougH9:
I don't know if I would trust a wood stock on such a rifle.


its fine its rather reinforced.. cross pins and extra lugs on the barrel. as long as the screw stay torqed you will be fine..


But what about the pistole grip...that is the weak spot.

And if it let go under peak recoil the shooter could get REAL hurt.



the grain of the stock flows into the grip.. stock design on the big boys is a bit more work than your standard 06.. and blank selection is paramount.

in a prior life I was a smith that specilized in making big bores out of p17's..
Link Posted: 12/16/2009 10:33:32 AM EST
if they cut the barrel to 16" and gave it one of those shoulder things that goes up, maybe cover it in rails, then they'd have my attention.
Link Posted: 12/16/2009 10:34:08 AM EST
Link Posted: 12/16/2009 10:38:52 AM EST
Overkill lol. How appropriate.
Link Posted: 12/16/2009 10:40:14 AM EST

In before someone manufactures a .600 OverKill AR upper.

Link Posted: 12/16/2009 10:43:23 AM EST


This would scare me off.
Link Posted: 12/16/2009 10:43:39 AM EST
sounds like a good round for opossums
Link Posted: 12/16/2009 10:45:02 AM EST
In before someone makes a handgun in this caliber and you can't use solid brass bullets anymore
Link Posted: 12/16/2009 10:46:45 AM EST
4500.00 For the Rifle

225.00 for 20 rounds of ammo.
Link Posted: 12/16/2009 10:47:13 AM EST
[Last Edit: 12/16/2009 10:49:22 AM EST by Rampant_Colt]

Originally Posted By GlutealCleft:
600 grain bullet? How about an 1850-grain 4-bore. For the caliber-inclined, that's a .962!

Thanks!
I love stories like that!



Who here isn't guilty of hunting with a rifle way more powerful than necessary? ?
Big-game hunters going after Africa's 'Big Five' need the extra added insurance of powerful rifles like these to ensure their save arrival home –– not in a body bag with the contents flattened-out like a doormat


<edit>
remember this thread:
http://www.ar15.com/forums/topic.html?b=1&f=5&t=947415
Link Posted: 12/16/2009 10:51:39 AM EST
so whats the matter w/ FA .308s or .50BMGs for elephants?
Link Posted: 12/16/2009 10:56:48 AM EST
do want...
Link Posted: 12/16/2009 6:30:22 PM EST


would this count as a destructive device? seems like i would be useful for home construction. driving in masonry screws and whatnot.
Link Posted: 12/16/2009 7:19:35 PM EST
[Last Edit: 12/16/2009 7:25:29 PM EST by shack357]
Originally Posted By CRC:
So is that a Destructive Device?


No. The rounds mentioned, as well as most nitro express rounds(the ones over .50) and the 12 gauge from hell are exempted under the sporting use clause of NFA. The .700H was designed by the same person who designed the 12 gauge from hell. I've been in touch with him, and bought a round of 12 gauge FH from him. On the nitroexpress.com big bore rifle forum there's a long thread about it, and the 12 isn't big enough anymore. IIRC he's developing a 190 gauge from hell, using a 4 inch brass case. He posts here from time to time too, I'm sure he'll drop in if he hasn't already(haven't read the whole thread yet).
Also, the .700HE is much cheaper to shoot than the .700NE, which was his goal all along. Something like a third the price, meaning reloading is still a must, but it's not $100 each time you pull the trigger either.

ETA-I'd REALLY like to shoot the 12 gauge from hell-according to one email I got from him, recoil from a 14 pound gun is similar to a goose load from an 870-weight gun.Punishing, but tolerable.
Link Posted: 12/16/2009 7:28:27 PM EST
Then again, there is this ancient invention known as the .50 BMG round.
Link Posted: 12/16/2009 7:34:07 PM EST
Originally Posted By shack357:
Originally Posted By CRC:
So is that a Destructive Device?



ETA-I'd REALLY like to shoot the 12 gauge from hell-according to one email I got from him, recoil from a 14 pound gun is similar to a goose load from an 870-weight gun.Punishing, but tolerable.


Goose loads barely have much recoil, at least 3 1/2 T, BB, #2 don't seem to.

T
Link Posted: 12/16/2009 7:38:51 PM EST
Needs video
Link Posted: 12/16/2009 7:46:39 PM EST
[Last Edit: 12/16/2009 7:48:17 PM EST by shack357]
Originally Posted By Kolat:
Originally Posted By shack357:
Originally Posted By CRC:
So is that a Destructive Device?



ETA-I'd REALLY like to shoot the 12 gauge from hell-according to one email I got from him, recoil from a 14 pound gun is similar to a goose load from an 870-weight gun.Punishing, but tolerable.


Goose loads barely have much recoil, at least 3 1/2 T, BB, #2 don't seem to.

T


I know that, I just want to see how close the assessment is. I shoot a lot of 3 1/2 inch goose loads. Now, 3 1/2 inch )) Buckshot, fired from a Remington 887 on the other hand are painful. The recoil of goose loads is something that creeps up on you if you miss a lot-by the end of a bad day my shoulder is killing me, but it's not all that noticeable in the field.
Link Posted: 12/16/2009 7:54:20 PM EST
Link Posted: 12/16/2009 8:09:02 PM EST
Nice
Link Posted: 12/16/2009 8:30:50 PM EST
How well does it work on two gangbangers driving a stolen car with two pit bulls fighting in the trunk???
Link Posted: 12/16/2009 8:33:00 PM EST
The next time I go up against a tank, that's what I'll grab
Link Posted: 12/16/2009 10:11:04 PM EST
I'll stick with .50s and 20s.
Link Posted: 12/16/2009 10:19:10 PM EST

Originally Posted By Jammer1:
Originally Posted By gamesniper:
There'll be people now that'll say a.300WINMAG or .30-06 ain't enough.


Funny you should mention that. Last time I was at the range, there was a guy there shooting a 30-378 Weatherby. When someone asked him about it, he said that he used to shoot a 300 Weatherby but "It wasnt enough"! Dont know what the hell he was shooting but there damn sure isnt anything in Oklahoma that needs that. Especially in a sporter weight rifle. The best part was, I watched him shoot at least 40 rounds, and only put a single round into his 16 X 24" target (100 yards from a bench!)

It doesnt matter how much power you have, if you arent putting it into the boiler room, you might as well be using a fly swatter.

The couple of people that I have met that have .30 - 378s have had no business owning them. They had to have a good friend of mine and I sight them in.

Bore life is around 1 to 2 thousand rounds if you're lucky.

I swear to the Lord above that the bullet gets to the target before the muzzle blast gets to your ears. I've never shot anything in that caliber range that was so fast in my life.

( the .22-250 is, of course, psychotically fast...but it's a .22 )
Link Posted: 12/16/2009 11:30:55 PM EST


Anything that big ought to have trail spades, and a GPS system. Sheesh.

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