I own this exact shotgun and it is by far the best shotgun I've ever owned, bar none. Balance and pointing are effortless and it is incredibly well made. GLWS!
I have some 6.5's I am not going to use. Brand new unopened box of 143 ELD-X, box of 87 ELD-X "factory 2nds" from Midway, partial box of 100 TTSX (10 ea) and 120 TTSX's (41 ea)
$80 for all of them shipped to your door.
I keep hearing about these speeds with 20" barrels from a 7-08 but I've owned five 7-08's now and probably loaded 3k rounds with 10 different powders and I've never gotten close. Even my fastest barrel ever - that shot 120 TTSX's over 3100 fps with CFE 223 - would only give me 2800 with 140's...
2720 is about typical for 140's from a 7mm-08 in my experience. I've loaded for that cartridge for about 7 years now, and dozens of loads amounting to thousands of rounds. Some guys can get 2800 (some even claim more) from 140's out of a 7mm-08 but I've never gotten close out of hunting-length...
Almost every backpacking guide you will find recommends a gallon/day. That said, everyone is different. I can get by on 2 quarts/day even in the hottest conditions while a good friend of mine needs at LEAST a gallon if not more.
Also depends on if you're doing any washing or cooking at all...