02-06-2024, 08:59 PM
(02-06-2024, 06:41 PM)grayfox Wrote: The other consideration for these bullets, in addition to the 1000 ke, is that you are above their min opening speed. To be reliable, and to compensate for ambitious guesses just "slightly" beyond distance, I try to set +150 over the published minimum velocity, to ensure adequate opening. For the eldx, you can check hornady but IIRC they are at 2000, maybe 1800, min opening. So the 90 eldx, just be aware of that. the sierra 90 tgk has some advantage because its BC is .490, where the 90 eldx is .409, thus tgk has more velocity at a given yards than the hdy... I have and like both of them but want to stay inside all of the boundary conditions...I have read or heard for CX and GMX it has to be 2300 or better and on ELDX 103 1900 but I have no idea where to find that information. But that is one reason for picking the 103 ELDX it seems to have the most retained energy and speed out to the 500yd line . But that is pushing it at max pressure.
It's also one reason I went with a 24" barrel so I could wring every bit if range and energy out of the 6ARC and with how short and handy this rifle is I wish I had gone 26" barrel.
Looking at Sierra Bullets the 100gr tsk comes closer to and beats the Hornady 103 ELDX if it can be pushed as. fast as the 100gr Hornady at 2900. With a BC of .515 that it retains down to 1900 fps it looks like it would outperform the 103eldx. It stays over 2000fps beyond 500yds