Now that's a good question, I wasn't sure where the first post was going...
The g1 ballistic coefficient for the 103 eldx is, iirc, 0.512. It does tend to retain KE better downrange, than a lighter bullet, which typically would have a lower BC.
Example, the 95 SST has a BC of 0.355, the 90 gr Sierra TGK (if you can find them) has 0.490.
I refer to the g1's b/c they are the ones most used in ballistics calculators, and are good for example out to, o, 500-600 yds.
In the case of comparing the 103 eldx to the 90 tgk, of course, retained energy also is affected by the lower mass of the 90 grainer.
Because of the 6Arc's small case capacity (small but mighty IMO) powder selection and actual MV's are somewhat constrained, but the original design for the military was for an AR-15 frame that could shoot 105-108 gr bullet out to 1000 yds with retained KE sufficient for long-range, light weight sniper purposes. So those high-BC bullets can definitely rock out to 1K.
Lots of ballistic apps available, couple of free ones are iStrelok, and PointBlank, but there are also others.
I do like the 103 in the 6 Arc by the way...
The g1 ballistic coefficient for the 103 eldx is, iirc, 0.512. It does tend to retain KE better downrange, than a lighter bullet, which typically would have a lower BC.
Example, the 95 SST has a BC of 0.355, the 90 gr Sierra TGK (if you can find them) has 0.490.
I refer to the g1's b/c they are the ones most used in ballistics calculators, and are good for example out to, o, 500-600 yds.
In the case of comparing the 103 eldx to the 90 tgk, of course, retained energy also is affected by the lower mass of the 90 grainer.
Because of the 6Arc's small case capacity (small but mighty IMO) powder selection and actual MV's are somewhat constrained, but the original design for the military was for an AR-15 frame that could shoot 105-108 gr bullet out to 1000 yds with retained KE sufficient for long-range, light weight sniper purposes. So those high-BC bullets can definitely rock out to 1K.
Lots of ballistic apps available, couple of free ones are iStrelok, and PointBlank, but there are also others.
I do like the 103 in the 6 Arc by the way...