I'll take the one I'm the most confident with at the time. I've built my own guns since 1992 and have a lot of custom rifles even though I only shoot about 8 or 10 of them. I just built a 300wsm and a 300wm that I will probably use here in ID for elk, deer, and antelope. I have a 6.5x68 Shuler Imp in the works that should push 140's 3300+fps and a 7-338 Norma Imp. that will push 195's 3200+fps. I also have a pretty accurate 6.5saum, 6.5-300wm (I shot a deer at 1006yds with this one 4 years ago but it's pretty heavy), a couple 7-300wm's (I shot my elk at 533yds last year with one of them), and a couple 6.5x47 Lapua's. I'll shoot several of them right up to the time to go and the one that impresses me the most at long range will get the call. Who knows I might build something else in a lighter weight rifle between now and then
. I do have a .277 8.5 twist barrel coming that I will probably make into a 270wsm.
I wanted to go as late as possible because we have other hunts going on here until Nov 8th for elk and Nov. 20th if we get whitetail tags. The rut hunts are almost impossible to draw without points so I searched the latest season dates with good odds of drawing. I wanted to go when it would be cooler down there as well. November is in the 40's and 50's around here versus probably the 70's and 80's down there. I'm sure we will be sweating our butts off hiking around in those temps. Those are our normal temps in September.