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Old August 24, 2014, 12:27 PM   #73
JD0x0
Senior Member
 
Join Date: January 30, 2013
Posts: 1,037
Quote:
the 25-06 would be much better suited for the purpose that you are looking for.
.270 is a 25-06 on steroids. Yes we all know they use the same parent case.

A .270 with a stout load can push a 130 grainer to 3200fps
.25-06 will shoot 100 grainers at about 3200fps.


On top of the .270 shooting a heavier bullet at the same speed. That bullet tends to have a higher sectional density and ballistic coefficient compared to .25 cal.

100 grain .257 SD= .216
130 grain .277 SD= .242


The .270 is so underrated for what it is. Load 83-90 grain bullets, and it's essentially a .243 win, .22-250, .204 ruger on steroids. Similar velocity, similar BC and SD bullets, but the .277 bullets have roughly twice the mass of those other cartridges.

a 180 grain .277 cal bullet has a SD of .335
That's superior to a 250 grain .338 caliber bullet. You'd need a .338 cal bullet at 270 grains to have a comparable sectional density to a 180 grain .277 cal bullet.

IMO .270 Winchester is by far one of the most versatile, handy cartridges ever made. It's arguably more versatile than the .30-06 even though .308 has the widest range of projectiles. The 6.8mm seems to have better light weight spitzers for varminting than compared to .308
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