Originally Posted by Buffalobob
I do not understand the theory behind short barreled 308's for longrange work because like most other cartridges, it will benefit from more barrel length.
Secondly, while the 175 SMK works very well as a hunting bullet for medium sized animals, the 155's in several brands can give you more velocity with almost exactly the same BC. This translates to less drop and more distance before going subsonic.
You are right, a longer barrel would lend itself to higher velocity. This particular rifle is my primary deer gun. Normally I have it loaded up with 150gr nosler BT's. I can get them to about 2700fps or so in that barrel. The short barrel lends itself very well to my style of hunting, and I don't give up much velocity to do so.
The 308 doesn't actually give up much in the shorter barrels compared to other calibers.
I have a surgeon AICS/591/krieger 18" 308 being built at LA Precision right now. Its purpose is not as a competition long range rifle, but a medium range tactical rifle. (800yds) That doesn't mean I can't try to make it go farther. Like to run suppressors, so a 24-26" barrel inhibits me more in the handling than the short barrel inhibits me in velocity.
Your comments regarding the 155's tell me that you've never shot them in an 18"-20" barrel. I have, and thus far, a powder/bullet combination that yields more than 2700fps has eluded me. The larger bullets suffer much less velocity loss than the lighter ones in a short tube.
I am well aware that a 300WM or 338LM would yield itself to 1000yd shooting better than a 20" 308. However, that does not mean the exercise itself is useless. I do not own a larger caliber currently, and I would rather be fluent and capable with what I have than what I might have later. When I practice, it is all about learning and fun. I practice often, and learn often. The 308 is quite possibly the worlds greatest teacher when it comes to long range shooting.