MT6601 vs. MT6700

[Fractal]

I'm looking to buy a brand new AR-15. Colt seems like a good choice.

The only difference I see between these two models is the MT6601 has a RH. 1 turn in 7" rifling twist versus the MT6700's RH. 1 turn in 9". What difference does that make?

Also the C models are compensated models. What does that mean?

[falakar15]

Ok. The rifle twist rate of 1 in 7 will stabilize the heavier 69-80+ gr. bullets that are used on the 600-1000m ranges better than the 1in9 twist barrel. This rate, 1in9, will work with the lighter bullet weights from 55gr-69gr. The original 1in12 rate from the SP1s and M-16s is for the 52gr and lighter bullet weights. The more twist in the barrel, the heavier bullet it will stabilize.

As far as the Compensated version goes, it has a Muzzle device mounted on the barrel to control recoil and/or flash. AR15s don't have enuff recoil to amount to much to begin with, some just want the trick looking muzzle brakes. Now on the other hand, the birdcage flash suppressors do a fair job of cancelling flash signature in low light conditions. If that is important to your use of an AR. Both muzle devices have an obvious effect on the muzzle blast or sound created. They are louder to the shooter and those on the firing line, IMO. falakar15

[Fractal]

Thanks! Extrapolating from your reply I assume the more the gr. the lighter the bullet?

Interesting. The MT6601 with the 1 in 7 is called the Match Target HBAR, whereas the MT6700 has the 1 in 9 and is called the Match Target Competition HBAR. If the MT6601 shoots at a longer range, why wouldn't that be the "competition" rifle?

[John Kennedy]

Actually, the lower the number, the lighter the bullet. As for the names, who knows? I have a pre-ban 6601c and it's just marked "Match HBAR".

Before you decide, ask youself what you want to do with it. For example, I prefer a .308 for over 300 yards, so I figure the AR as a 300-and-under weapon and have my preferences for shooting them that way. I also like to do alot of shooting when I go to the range, so I like inexpensive ammo. Because of these facts, I shoot alot of Wolf ammo-generally you can get a case for $100.00 OTD at a show, either 55gr or 62gr. I shoot only the 55gr and it functions well in my Colt, my Bushy M17 and my Rock River build.

If you are dead-set on using it as a competition gun, you'll want to consider the ranges, twists and bulet types/makes accordingly. Also, I've heard some claim any type of muzzle break/compensator can affect accuracy-maybe other long-range shooters can chime in on that one.

[uzimon]

colt rules, everything else is a copy
mine:sporter match h-bar, 6920 le

[ssom003]

Mine is Colt Match Target Competition HBAR... Love it...

http://home.att.net/~ssom003/wsb/media/188823/site1222.JPG