[Tomcat088]

I just wanted to clear something up from ALS' post that might confuse some people. The .308 and .300 WM can both fire the same weight of bullets. You can get .308 with 190 grain bullets. The advantage of the .300 WM is that it can fire the heavier bullets faster than the .308. Faster isn't always necessarily "better", but in some areas it does have it's advantages. On longer shots you need to compensate for less drop, or at unknown distances if you're yardage is just a little off, then the advantage will go to the .300 WM. The problem with the .300 winmag is if you're pushing the loads hard, the barrel life will be much shorter than the .308, and with the heavier bullets comes more recoil. Another advantage that the .300 winmag has over the .308 is that since the bullet is moving faster from the muzzle and downrange, it stays super sonic to a longer distance. This means that it will shoot more accurately out to longer distances with a consistent load. This also means that since the .300 winmag is moving faster, it takes less time for the bullet to get to the target once it has left the barrel. This translates to with the same weight of bullet, the .300 winmag will have far less wind drift than the .308.

Also realize that what ALS is talking about his bullet going to "sleep", is different for all rifles, barrels, loads, etc. Whether or not the bullet "sleeps" depends on many different variables which are influenced by the ogive of the bullet, weight of the bullet, twist rate of the barrel, speed that the bullet is leaving the barrel and if this matches the twist rate of the barrel, whether the load is tuned to a "node" for that particular barrel, etc. Not all .300 winmag 190 Sierra Match Kings take out to 300 yards to "sleep", some do.