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My 600 Overkill arrived today back from AHR……. Modifications: 1. X-Brake installed 2. Lead added to stock bringing weight of rifle to around 12-13 pounds 3. Quarter Rib installed for forward scope mounting 4. New decelerator pad installed The rifle got here right at my lunch break…. I couldn’t wait; I drove home from the office and took her out for a test spin… Still in my suit & tie I went out front aimed at the far hill side and let loose a 900 grain slug propelled by 160 grains of H4350… By my estimated the felt recoil was at least HALF of what it was before!!!! I know this isn’t much of a report but I was really blown away at the difference in the handling…. I’m going to mount a Leupold scout scope tonight and take it to the range and shoot it from the BENCH Saturday….. I’ve never used a scout style scope before and am anxious to see how it works… Wayne & Ed did an awesome job and I’m really pleased with all of the work they did…. I’m going to continue my load development this weekend and would eventually like to do some DWJ vids to post later on…. Well back to work, money doesn’t grow on trees and 900 grain Woodleighs are expensive!!! Matt V. ______________________ Sometimes there is no spring... Just the wind that smells fresh before the storm... | ||
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Sounds(  ) awesome... Your enthusiasm encourages me  577 BME 3"500 KILL ALL 358 GREMLIN 404-375 *we band of 45-70ers* (Founder) Single Shot Shooters Society S.S.S.S. (Founder) | |||
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Let's see some pictures!! Post up! "Ignorance you can correct, you can't fix stupid." JWP If stupidity hurt, a lot of people would be walking around screaming. Semper Fidelis "Building Carpal Tunnel one round at a time" | |||
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Where is the kickometer when you need one? | |||
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Boom Stick, It’s a hell of a rush shooting the big ones… That one shot had me wound up the rest of the day… Perhaps I’ll start going home every day at noon and torch a few off? Instead of a three martini lunch I’ll have a three round Overkill lunch!! Whitworth, I’ll take some pics tonight after I get the scope mounted and post them first thing in the morning… Rip, Kickometer… Hmm, what unit does that measure in… Number of knuckles bruised, ounces of snot kicked out, or perhaps pounds of ice on sore shoulder ???Either way before the weight and the brake that rifle would have been off the charts and is now a pussy cat by comparison… 200+++ ft lbs of recoil is all I ever care to have handled, once was enough…. ______________________ Sometimes there is no spring... Just the wind that smells fresh before the storm... | |||
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Well, tell me the velocity of that 900-grain bullet with 160 grains of 4350 in a 12.5 pound rifle (?), and what was the lighter weight that rocked your world, and I will see what AccuLoad III says the recoil is in ft-lbs, fps and lb-sec impulse. Just for our amusement, and on impulse. Then you say a 50% reduction by the brake and extra weight? Sounds reasonable. Sounds smart. | |||
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Congradulations Trophyhunter, You're going to love it. That X-brake really works and isn't as noisy as some. Mine weighs right at 12 lbs with the Leupold scout scope, which I love. For this level of power, they are quite mild to shoot. I keep mine around 2100 fps with the 900grns. Last I saw, Midway had the woodleighs back in stock. | |||
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Does the kickometer measure the size of the hematoma?  "Ignorance you can correct, you can't fix stupid." JWP If stupidity hurt, a lot of people would be walking around screaming. Semper Fidelis "Building Carpal Tunnel one round at a time" | |||
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The 160 grains of 4350 should do about 2200 ft/sec. I am getting 2330 ft/sec with 165 grains of 4350 and a 26 1/2" barrel. Trophy hunter, I agree with you whole heartedly. The muzzle brake works wonders. I can handle the 184 ft/lbs of recoil with the brake on with no problem what so ever. Your 600 wouldn't be the short barreled black one that safari kid owned would it?? It only weighed 9 1/2 pounds to start, I think. | |||
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Bahh-Humbug!  I liked it better at 9 pds w/o a break!  (Yes Bigdoggy,it was mine)......Congrats on the improvements,now your even happier with it! da Safarikid"That's not a knife..THIS is a KNIFE" ! | |||
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Whitworth, I've never had a hematoma ( bruise for you people in Rio Linda )from shooting the 600 OK and I shoot them every week. Sore neck, wrenched back, crossed eyes, hemmoroids, erectile disfunction, and ADD, but never a hematoma. | |||
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Well alrighty then: Rifle A (Awful-Awsome) weighs 9.5 lbs. Rifle B (Bad-Enough) is 12.5 lbs. Both shoot a 900-grain bullet at 2200 fps, using 160 grains of powder to do so. Accuload3.04 calculations: Newtonian Free Recoil Impulse is the same for both, 11.62 lbf-sec. That amount of impulse applied to the two different rifle weights yields: Free Recoil Energy ... velocity: A = 228.8 ft-lb ... 39.4 fps B = 173.9 ft-lb ... 29.9 fps I don't doubt that adding the muzzle brake makes it feel like half the recoil with B compared to A. Now, who can calculate the muzzle brake percentage reduction of recoil energy and velocity so we don't need a kickometer for objective measurement? I have added the "f" in "lbf-sec" to show that this is the Imperial Engineering unit of force, "pounds force" not lb-mass. Never mind standard g. Impulse is the change in momentum of an object to which a force is applied over time. I = integral of Fdt I = "F-delta-T" = "M-delta-V" Impulse has the same units as momentum. (Kg)(m/s) = Newton-sec Newton = (Kg)(m/s)/s = Unit of Force Impulse = N-sec Impulse = lbf-sec The Newtonian Free Recoil Impulse is constant for a specified bullet weight and velocity and powder charge, no matter what the weight of the gun is, or whether a muzzle brake is screwed on the end of the muzzle. The Impulse is the "Action," the Recoil is the "Reaction." The "Reaction" depends on the weight of the gun and whether it has a brake. The "Action" is oblivious to these factors. My favorite .505 Gibbs Load in my rifle has an Impulse of 7.98 lbf-sec, which pales in comparison to the 600OK's 11.62 lbf-sec. That impulse is applied over much shorter duration than one second, eh? Impulse of a .458 Lott with 500-grain bullet at 2250 fps using 85 grains of powder (realistic): 6.50 lbf-sec Beam me up Scottie, and let's get underway, under impulse power. The Impulse from the 600OK can be used as steering thrusters for minor course corrections of the Star Ship Enterprise. | |||
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.......It may be a cost comparison analisis like drinking .....You can drink a whole bunch of Bud lights for the same jolt you will get from a good glass of Scotch .....Like wise it took me about 10 rounds of 458 Lott and 458 Win mag in my Lott plus about 15 in my 8 1/2 lb muzzel broke 458 ....To get the same headache that 1,, 600 OverKill would produce ..  .If it can,t be grown , its gotta be mined .... | |||
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 I'm new to posting pics so please understand this is so crappy..... ______________________ Sometimes there is no spring... Just the wind that smells fresh before the storm... | |||
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 Here is the brake that I cut out in the first pic..... ______________________ Sometimes there is no spring... Just the wind that smells fresh before the storm... | |||
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Sorry the pics are so large........ Can't figure out how to resize........ Safarikid, With all due respect.... You are crazy man ....Rip, When ya look at those recoil numbers and figure the brake may cut the felt recoil by half, it make sense.... I was going to say it felt like somewhere between a 505 Gibbs and 458 Lott (after the mods).... Gumboot, Before the mods shooting that rifle was like doing shots of Everclear... Now it's more like a Vodka tonic.... ______________________ Sometimes there is no spring... Just the wind that smells fresh before the storm... | |||
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Guys, can you fill me in here? What case is the 600 Overkill based on and what is the bullet diameter? Dave Dave DRSS Chapuis 9.3X74 Chapuis "Jungle" .375 FL Krieghoff 500/.416 NE Krieghoff 500 NE "Git as close as y can laddie an then git ten yards closer" "If the biggest, baddest animals on the planet are on the menu, and you'd rather pay a taxidermist than a mortician, consider the 500 NE as the last word in life insurance." Hornady Handbook of Cartridge Reloading (8th Edition). | |||
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Dave, the case was designed by Robgunbuilder who posts here. It is it's own beast. The bullet dia. is .620 and weighs 900 gr. It will take 150 to 165 grains of various powders. | |||
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Now that's putting the F back in firing the 600's  | |||
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600 Overkill, I liked the vids you posted a while back.... I've got some empty penut oil containers that have really been getting on my nerves.... It's a football weekend here so if I get time hopefully I'll post some DWJ vids of my own..... ______________________ Sometimes there is no spring... Just the wind that smells fresh before the storm... | |||
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Kill-em See how many it takes to stop a 900grn. I drove a 1040gr Beartoothe LBT through 8' of water and out the backside as a test a while back. It was going around 1800 fps. Phenominal penetration but accuracy wasn't worth a shit. I'll have to refine that load or cast my own from linotype. | |||
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Trophyhunter, the 1/4 rib and the scope really finish out the gun very nicely. Safarikid likes recoil more than me. I always go with a little longer barrel and more weight. The extra weight will come in handy, even with the brake on it. Good luck with it. | |||
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