600 Overkill Build

[56hawk]

Convinced my gunsmith to build me a 600 Overkill. Building this gun strictly to get the maximum amount of recoil. I have a 460 Weatherby that I use as a range time fun gun, but it's just not impressive enough. See video links:

http://youtu.be/8CQz0hIZPhs
http://youtu.be/qB8P4-R3L-Y

Anyway, I have a CZ550 magnum action on order. Just want some opinions on the rest of the parts. The main questions are stock and barrel length. I'm leaning toward a McMillan synthetic stock in light brown/light tan. Open to other color ideas though. Barrel length I want to keep fairly short. I Photoshopped the pictures below to get an idea of what the rifle would look like with 16, 18 and 20 inch barrels. Any thoughts on what looks the best, or any other ideas?
Thanks

 

[Art Eatman]

My personal sense of aesthetics is that longer barrels look more well-proportioned.

 

[Sam1911]

Just curious, and I can't seem to find the definative answer:

Has the .600 Overkill been granted an exemption from the NFA Title II Large Bore Destructive Device classification?

I know JDJones was able to get several of his >.50" bore wildcats exempted, but I can't find out for sure about the .600 O.

 

[56hawk]

No idea on the NFA. It's basically just a belted version of the 600 Nitro Express. Not that it means anything legally, but considering how many companies are selling complete rifles in 600 Overkill I'm not too worried.

Art - Do you think the barrel should be longer than 20 inches? Figured that was the maximum I wanted for weight reasons. The 16 does kind of make it look like a blunderbuss though.

 

[DM~]

Someone already built a TC Contender pistol in 600NE, seems if you like recoil, that's what you should build.

DM

 

[HarcyPervin]

slightly masochistic, but looks like a blast. keep us updated. FWIW, I voted 20, I think it'll look better, just my .02

 

[MachIVshooter]

Building this gun strictly to get the maximum amount of recoil.

Why not a .729 Jongmans or a Nitro 4-Bore?

Someone made a 13 lb .50 BMG at one point, too.

 

[1KPerDay]

If recoil is what you really want, go with the shortest barrel. And drill a bunch of holes in the stock.

I voted 20" for aesthetics. A 22" would look even better IMO.

 

[56hawk]

MachIVshooter - Cost and weight to answer your question.

The 600 Overkill is the largest that will fit in a standard magnum action. Also moving up to a 50 BMG action adds a lot of weight. Trying to get in around 8 to 9 lbs.

 

[fireman 9731]

A shorter barrel will certainly be a bigger boom.

 

[M91/30]

What do you against grapes man?!?!

 

[dubbleA]

Hawk, you want impressive results on soda and grapefruits at 10-15 yards you need to try a .17, .20, .22 varmint cartridge pushing 4000fps+ with light bullet. If you are really wanting lots of recoil build a 10-15lb 50 BMG without any muzzlebreak and you'll get your wish.

 

[56hawk]

M91/30, it's just what we brought to the range that day. lol

dubbleA, I already have a 243 that pushes a 55 grain bullet over 4000 fps. It is pretty impressive on soda bottles I must admit.

The 460 Weatherby is also great for breaking rocks though:
http://youtu.be/3aR1fnZ6Ccc


As far as 50 BMGs go, I just don't think I could build one to do what I want. The hard part would be to build one that still looks like a normal bolt action at that weight. Just don't like the looks of most of the single shots or ar lower based 50s. Plus 50s are just to common these days.

Just some specs:

600 Overkill
900 grain bullet
2300 fps
8 lb rifle
300 ft-lb of recoil energy

50 BMG
750 grain bullet
2900 fps
10.5 lb rifle
300 ft-lb of recoil energy

 

[Art Eatman]

Given how subjective the liking for looks is, I suggest going to a gunshop and just look at the barrel lengths of rifles on the rack to see what looks best to you.

A lot of it has to do with proportion. A slender stock with a forearm that's not too long can look righteous with a shorter barrel, I imagine.

 

[DAP90]

300 ft-lb of recoil energy

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I like the looks of the 20" barrel best.

 

[MachIVshooter]

600 Overkill
900 grain bullet
2300 fps
8 lb rifle
300 ft-lb of recoil energy

I understand the recoil junky thing, but you do realize that 300 ft lb is in excess of what the human body can handle, right? You're gonna end up with a damaged shoulder and/or detached retinas.

My 7.5 lb .375 Ultra comes back with 82 ft/lbs at 23 MPH with my 300 gr. handloads, and it is enough to give me a headache if I shoot more than a box in one sitting. I've shot stuff that recoiled a little harder, close to 100 ft/lbs. That's about as much abuse as I'll voluntarily subject myself to.

We only get one body. I'd suggest not doing things that destroy it if you don't absolutely have to.

 

[56hawk]

As far as recoil goes my Weatherby comes in at 115 ft-lbs. And while I don't think I've shot much more than ten rounds at one time, it's really no big deal. At least standing up. Did three in a row off the bench, and that kind of sucked. I really want to see what my threshold for recoil is. Planning on loading light to begin with and working my way up. Starting loads should be around 200 ft-lbs.

Also it's not like I'm the first to build an 8 lb 600 Overkill. Found this video on youtube:
http://youtu.be/wGfu3Rge8Xo

 

[MachIVshooter]

It's your body, brother, do as you please. Just understand that retina detachment is a very real risk and a very serious injury that can leave you vision impaired or even completely blind. Do some research.

 

[Hizzie]

You convinced you gunsmith to build you a 600overkill? Big boree rifles are best left to the experts who build that type of rifle regularly. If your guys doesn't build big bore rifles already this might not be within his skill set. You might want to head over to Accurate Reloading for more big bore info.

 

[Maple_City_Woodsman]

You're gonna end up with a damaged shoulder and/or detached retinas.

OP, you say your a 'recoil junkie' ... Junkies O.D because they crave their high over their physical safety. At 300lbs of recoil you will 'OD' if you go through with this project. Your "fun" will come at the expense of permanently damaged joints and vision loss.

If you like pain THAT much, just pay a lady in leather to whip you like everyone else.

 

[BADUNAME37]

As others stated, you only have one body, why abuse it? But, to each his own. With that much recoil, there could be tearing of inside organs, tearing of tendons, etc.

 

[MidwestRookie]

I call shenanigans.

See you in the emergency room...

*And I'll only vote if 14" with perm compensator/brake is added to the list*

 

[RSVP2RIP]

Why not just stand in front of a train and yell 'bang' before it hits you for ultimate recoil? It would be cheaper...

 

[56hawk]

Just talked to a guy on another forum, and this is what he said:

I have an 8 1/2 lb 600 overkill. It has a small brake on it, and it depends what load you use on the recoil. At 2100 ft/sec with a 900 grain bullet, it is doable. With 2300 to 2350 ft/sec, it kicks a lot!

Figure I'll just start at the low end and work my way up.

 

[1KPerDay]

Why not just stand in front of a train and yell 'bang' before it hits you for ultimate recoil? It would be cheaper...

haa haaaaaa!