Originally Posted By: yotebuster10What do you think the weight difference is between the 6.5 Ar15 vs Ar10 243..?
If all other things are equal, the 10's are going to weigh in 1-2 lbs heavier on average. You have a longer upper/lower, longer BCG and the barrel profiles tend to be heavier.
Between the .243 and the 6.5G it's six in one, half a dozen in the other. The .243 wins out in the velocity department, but for accuracy and coyote killing power they are similarly capable.
I like the ability to be able to switch out the 6.5G upper onto one of my AR-15 lowers, makes it very versatile.
As for ammo, again they are similar. The .243 has been around longer so there are a lot more factory options. But as the other guys pointed out, there are plenty of 6.5G offerings and the 6.5G is very forgiving for a hand loader. I run 123gr SST's in my 6.5's and I have never had a runner yet. I have heard of runners with the 123gr Amax, but that is a bullet designed for accuracy and not terminal balistics.
We are working on a 129gr Hornady SP hand load that should replicate the 150gr SP results that we have seen from the .308
So I can't really throw stones at either one. I think that they are both great coyote killing calibers.