Maximum Effective Range of an SBR

[taliv]

sure but my point is that with all the folks in iraq using m4s, I wouldn't think the effective range would be a big mystery

[DRich]

I'd bet that most members here are referring to the sub-12" barrels when referring to SBR's. Most of the SBR discussions seem to center around the 11.5"/10.5" guns. Personally, I wouldn't waste the time/money to buy a tax stamp for a 14.5" barrel...but I've spent a small fortune on tax stamps for the shorter guns.

[KevinB]

While you can use a mk18 effectively at longer ranges, ~400m that I am aware of..., its not the weapon of choice.

Bullet Placement is part of the equation - but at longer ranges, and the lower velocities the 5.56mm is not going to act like it does in close - so your .22 cal hole in AliBaba is a little less effective than a large chuck of fragmented chest.

Most SBR's are not scoped for engaging out past 200m - bullet drop, wind and tgt detection and the adjustment of splash are going to come into play.

Lastly just cause you get a good result at long range (for a SBR) on one tgt does not mean its going to translate into the next tgt's. SBR's are chosen for a mission - units issued them tend to be DA specific - or at least use SBR's when doing DA's and use other weapons when doing other missions. Cardinal rule - use the longest barrel you can get away with to do the job...
I have a 10.5" a 14.5" and a 16" middy on my wall (plus a FN) and I carry the 16" since I can get away with is in my role. I dont like to be constrained into a SBR unless I need it.


* if your using a chopped 7.62x51 - best bet is a 155gr AMAX.
Doc Roberts can over more.

[Robb Jensen]

I was wondering if any knew the effective (the ability to knock down a BG)range of an SBR?

No rifle will 'knock down a BG' (unless it fires Mack trucks) otherwise it would also knock the shooter down (pure physics).