Originally Posted by Swampman1
Originally Posted by smokepole
I'm talking recoil, which is less with lighter bullets used in either the 7-08 or the .260. You can't cheat physics, even if you say you can't feel the difference.


If you can't feel the difference (and you cant), it's a moot point. As I mentioned .308 reloading components are cheaper. I guess there are reasons for the .260 and the 7mm-08, but i don't know what they are.


Perhaps your shoulder is as numb as your brain. There is a significant difference in recoil given bullets with similar construction, Sectional Densities or Ballistic Coefficients.

Case in point, consider the following, based on Nosler�s fastest published data for uncompressed .260 Rem /.308 Win loads and using an 8.3 pound rifle in every case:

.264�/130g AB, 2847fps, 43.5g powder, SD = .266, BC = .488
.264�/140g AB, 2820fps, 44.0g powder, SD = .287, BC = .509
.308�/180g AB, 2638fps, 42.5g powder, SD = .271, BC = .507

Calculated Recoil
=================
12.60 fp = .264�/130g
13.82 fp = .264�/140g
17.35 fp = .308�/180g

In case you are as bad at simple math as you are a logical arguments, that is a 41.4% increase in recoil when going from the .264�/130g to the .308�/180g bullet. It is a 25.5% increase when comparing the .264�/140g to the .308�/180g bullet.


Zero/Maximum Point Blank Range (6� diameter target)
==========================================
243 yds/286 yds= .264�/130g
242 yds/284 yds= .264�/140g
226 yds/266 yds= .308�/180g


300 yard ballistics (10mph crosswind, Point Blank v1.8a)
==========================================
-4.33�, 2324fps, 1439fpe, 5.94� drift = .264�/130g
-4.45�, 2320fps, 1673fpe, 5.74� drift = .264�/140g
-6.59�, 2156fps, 1858fpe, 6.41� drift = .308�/180g


600 yard ballistics (10mph crosswind, Point Blank v1.8a)
==========================================
-65.90�, 1860fps, 992fpe, 26.36� drift = .264�/130g
-66.23�, 1874fps, 1092fpe, 25.38� drift = .264�/140g
-80.13�, 1730fps, 1195fpe, 28.41� drift = .308�/180g


If you accept 1800fps as the minimum working velocity for the AccuBond bullets, as specified by Nosler, the 130g and 140g .264� bullets add 95 yards and 110 yds respectfully over the 180g/.308� load (130g = 640 yds, 140g = 655 yds, 180g = 545 yds).

Considering that 300 yards is well beyond the range where most game is taken and that the vast majority of game is deer and smaller, the 130g/.264� load seems very reasonable and doesn�t incur the 41.4% increase in recoil that comes with the .308�/180g load. Even at 600 yards the .308�/180g load isn�t providing anything that is needed for most hunting purposes.

As to the recoil, if you can�t feel the a 25% or 41% difference in recoil, you ought to see a doctor.


Last edited by Coyote_Hunter; 04/02/12. Reason: spelnig

Coyote Hunter - NRA Patriot Life, NRA Whittington Center Life, GOA, DAD - and I VOTE!

No, I'm not a Ruger bigot - just an unabashed fan of their revolvers, M77's and #1's.

A good .30-06 is a 99% solution.