I'd like to build a carry .308 that can consistently reach out to 1027yds (my range). There are going to be trade-offs for sure, so I'd like to try to get a clearer handle of what I should be looking for in an overall system that combines barrel length, twist, bullet gr, and powder burn choices to optimize ranges out to 1027yds within the parameters of a rifle that stays pretty handy. Not looking for a competition gun. My prior experience is 300WM, and 6.5CM, but I am new to .308. I probably went about my introduction to rifle backwards in that regard. I understand that .308 won't share the same BCs of those calibers.

Research I have compiled so far (please correct incorrect assumptions):

Are the above assumptions. correct?

If I were to use that VV N150, should I be looking at something like a 22"-24" barrel, 1:10 twist, 180 gr VLD?

Research I have compiled so far (please correct incorrect assumptions):

- Basic rule of thumb: Shortening the barrel length of a .308 nets a loss of ~20 fps per inch.
- [Edit: corrected]
~~Fast burning powders like short barrels. Slow burn like longer barrels.~~ - Slower burn powders also like heavier bullets(?)
- Twist: 1:10 is recommended for heavier bullets.
- Shorter barrels are stiffer. LL has shown an 18" barrel can make consistent hits at 1k. (Not sure what ammo he was using.)

Are the above assumptions. correct?

If I were to use that VV N150, should I be looking at something like a 22"-24" barrel, 1:10 twist, 180 gr VLD?

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