Quote:
Originally Posted by Nyksta
2700 fps 165 gr accubond in 308 win. Done
|
love it, solid combo right there, no one would argue it's ability...
and in my eyes i see this;
2700 fps, .248 s.d., .475 b.c., 1600 fps impact distance 650 yards, recoil energy 16 ft/lbs(9 lb gun)
Sure makes it easy to now see how anything else with a similar bullet construction compares to that.
ie;
2700 fps, 140 gr eld-x in 6.5 Creedmoor
and in my eyes i see this;
2700 fps, .287 s.d., .610 b.c., 1600 fps impact distance 850 yards, recoil energy 12 ft/lbs(9 lb gun)
*Used nosler load data and found max loads giving 2700 fps on both, the .308 used 46.5 grains of blc2 and the creedmoor used 41.5 grains of one of the 4350's.
and because it's a bit of a pet right now...
2550 fps, 123 gr sst, in 6.5 Grendel
and in my eyes i see this;
2550 fps, .252 s.d., .510 b.c., 1600 fps impact distance 625 yards, recoil energy 7.4 ft/lbs
*used sierra's load data for the grendel load, not much on noslers page
this how to compare a cartridge imo, for the things that matter to us
if max pbr is your priority then you won't want to do it exactly the same as this...tons of powder/light for caliber bullets and then add in the pbr distance variable
some want big ft/lbs, add it in there, i've seen some guys add time of flight(tof) to go with max distance potential....whatever is important to you
you study what you know, then you can see what else will do a similar job etc.
another known one
3000 fps, 100 gr partition, .243 win
or my view again;
3000 fps, .242 s.d., .384 b.c., 1600 fps impact velocity range 625 yards, recoil energy 9 ft/lbs(9 lb gun)
*nosler load data again, but a well known cartridge/bullet combo
**looks an awful lot like that Grendel, and had i not run the numbers i wouldn't have known, but the 6.5's sure show their efficiency
this is just how i compare cartridges, everyone has different needs or desires, choose your own methods but the data to accurately predict cartridges capabilities is available if you know how to use it