Thread: .270 is the best caliber ever made.

Originally Posted by Hermitage

Why put up with the 270's long action, extra recoil and noise over a 6.5 CM which has higher BC bullets, kills just as well with less powder from a smaller case so less recoil.
An example would be the Hornady Precision Hunter line of ammo that uses the Hornady ELD-X bullet. The 6.5 Creedmoor load fires a 143 gr bullet with a muzzle velocity of 2,700 fps, while the 270 Winchester load fires a 145 gr bullet travelling at 2,970 fps.

In a rifle that weighs 6.5 lbs and given the above rounds, the 270 Win will have 26.01 ft-lbs of free recoil and 17.19 ft-lbs for the 6.5 CM. This means the 6.5 Creedmoor will have around 50% less recoil than the 270 when comparing similar bullet weights.

Stop cherry picking,if you want to compare apples with apples do so.a immature granny smith is not the same as a crab apple. That 145grn is better than the 143.... And IF you really want to nit pick my 170s will shit all over the manbun/costsmore all day everyday. Why the hate on the costsmore??? Cause it's marketed as a long range round. It's not. It's medium range round full stop.no better or worse than many others if you stop drinking marketing coolaid.

Originally Posted by Micky Duck

Stop cherry picking,if you want to compare apples with apples do so.a immature granny smith is not the same as a crab apple. That 145grn is better than the 143.... And IF you really want to nit pick my 170s will shit all over the manbun/costsmore all day everyday. Why the hate on the costsmore??? Cause it's marketed as a long range round. It's not. It's medium range round full stop.no better or worse than many others if you stop drinking marketing coolaid.

There’s no denying that the 270 Win and 6.5 Creedmoor have impressive ballistics. The 270 is the obvious choice when kinetic energy is needed, as it fires similarly weighted bullets to the 6.5 CM at higher velocities.
This begs the question as to why the 6.5 CM is so popular? If the 270 has more case capacity, why then do we see the firing line at F-Class competitions flooded with 6.5 Creedmoor?... The answer lies in the barrel and bullet selection.

The 6.5 Creedmoor was designed to shoot long, high B.C. bullets. Long, heavy bullets require a faster twist rate to stabilize properly. Therefore, a 1:8 twist barrel was standardized for the calibre.

On the other hand, we need to remember what the 270 was designed to do; which is provide a flatter shooting alternative to its parent case, the 30-06 Springfield. Back in the 1920’s, it’s highly unlikely that ballistic coefficients were weighing heavily on the minds of rifle makers.

Back then, velocity was king and the 130 grain Spitzer fired by the 270 Win quickly became known as a flat shooting bullet. Therefore, the manufacturers standardized the 1:10 twist rate for the 270, which is good for bullets up to 150 grains, but not much heavier than that (unless you use your rounded low BC 170 grainers) This gives the 6.5 Creedmoor a clear advantage in terms of bullet selection thanks to its faster twist rate.

Originally Posted by Hermitage

There’s no denying that the 270 Win and 6.5 Creedmoor have impressive ballistics. The 270 is the obvious choice when kinetic energy is needed, as it fires similarly weighted bullets to the 6.5 CM at higher velocities.
This begs the question as to why the 6.5 CM is so popular? If the 270 has more case capacity, why then do we see the firing line at F-Class competitions flooded with 6.5 Creedmoor?... The answer lies in the barrel and bullet selection.

The 6.5 Creedmoor was designed to shoot long, high B.C. bullets. Long, heavy bullets require a faster twist rate to stabilize properly. Therefore, a 1:8 twist barrel was standardized for the calibre.

On the other hand, we need to remember what the 270 was designed to do; which is provide a flatter shooting alternative to its parent case, the 30-06 Springfield. Back in the 1920’s, it’s highly unlikely that ballistic coefficients were weighing heavily on the minds of rifle makers.

Back then, velocity was king and the 130 grain Spitzer fired by the 270 Win quickly became known as a flat shooting bullet. Therefore, the manufacturers standardized the 1:10 twist rate for the 270, which is good for bullets up to 150 grains, but not much heavier than that (unless you use your rounded low BC 170 grainers) This gives the 6.5 Creedmoor a clear advantage in terms of bullet selection thanks to its faster twist rate.

Unless you compare apples with apples and give same fast twist advantage to both..... It will happen eventually as the 6.8spc made them a thing lol