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Posted: 8/19/2007 7:27:32 PM EDT
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I was looking to get a 6.8 upper. What is the recoil compared to a .223? Is there any good muzzel breaks or compensators on the market? Any other information would be helpful. (ie. other calbers). Thanks, Mike |
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Recoil is noticeably higher on the 6.8, especially if your rifle is equipped to shoot SSA combat loads or the hotter handloads. It isn't anything to worry about if you're just shooting at the range, but if you're trying to do hammers, double taps, NSRs, and fast target transitions, the added recoil will slow you down. I use a Surefire brake (MB68AR) that is also the QD mount for SF's 6.8 can. Surefire also makes an MB68K that does not reflex back over the barrel. Both are outstanding brakes that pretty much eliminate muzzle flip and allow you to keep your sights planted. The MSTN QC comp is also highly regarded, although I have never personally used it. Most of the brakes for 6.8 are threaded 5/8x24. Here's a shot of my 6.8 SBR with the SF brake: 
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| In all timed tests of LE and military personnel to date, there is no difference in multiple target engagement speed or accuracy when firing various 6.8mm uppers vs. Colt M4's. BTW, no one here likes muzzle brakes, just A2 or Vortex flash hiders on the 12-16" guns and KX3's on the unsuppressed short barrel weapons. |
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This rifle recoil table might be helpful for comparisons. I don't own a 6.8 yet so I can't say from experience. I'll hopefully know in a few weeks! www.chuckhawks.com/recoil_table.htm |
Not sure how I missed that picture, but that is one of the nicer set ups Ive seen on ARFCOM in a long time. |
Unless you live in a Commy state and can't have flash suppressors 
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Gotta agree with you on that one  Phantom .308 Flash Supressor |
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My expereience has been that the increase in recoil is minimal. However, remember that there are other factors that determine the recoil you'll experience from a given rifle. Example: My .223 rifle is a 16" M4 gas-piston gun. It weighs about 7lbs. and if I shoot the 68 or 77-grain bullets, the recoil is what I would call "light." My 6.8 SPC weighs about 8 lbs. and when I shoot 110 grain bullets, the recoil is about 1.25 times that of the .223 gun. My girlfriend shoots the 6.8 SPC with no problem at all. When we are shooting at hogs, the adrenaline erases most of the perceived recoil anyway. So, overall, I don't notice much difference. I believe that, though the bullet weight (and therefore, the inertia) is higher versus .223, the 6.8SPC weighs about 1 lb. more, so the effect is somewhat compensated. I use the standard "birdcage" FH on both guns. I see no need for a compensator, but then again, I don't shoot competition, 3gun etc. I use the 6.8 SPC mostly for hunting, which is where it really shines. YMMV, but you really can't go warong with the 6.8 SPC. |
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