Marcus, I started with the standard 0.050 inches off the lands that Barnes recommends. The load shot so well I could see no reason to fool with over all length. The smallest group I have shot with the 110 TTSX over IMR 4350 measured a mere 0.323" for three shots. (Winchester Model 70 Super Shadow Camo)

I have an aquaintance at the rifle range that contends OAL is crucial to getting the TTSX's to shoot. I have not found OAL to be too critical with those bullets, a gun just seems to like them or not. I usually always wind up using 0.050 or 0.060 inches of the lands.