That's interesting, Johnn. My two S&Ls (a 65DL in .264 Win. Mag. and a 68DL in 7x61 S&H) have a magazine length of about 3.40". With your .308 NM, how much jump into the lands did your rounds have? I've always loaded hunting ammunition with at least .030" jump into the lands, and usually not more than that. You need some jump (i.e., distance the bullet travels before contacting the lands) with rounds being used in the field to ensure trouble-free chambering, but the accuracy equation normally favours having the jump minimal. With the .264 WM, I can achieve that with most bullets--seating them to about 3.370". With the 7x61, many bullets (Hornady, Sierra, Speer) can be seated to about .030" from the lands, but, for some reason (ogive form), with Noslers, this is a little harder to achieve. They touch the lands at about 3.46" to 3.49", so seating them to fit the magazine would result in about a .08" or .10" jump. Whether that much jump into the lands will have much if any effect on accuracy remains to be seen.