There seems to be a question of varying opinion on whether to have a 2000 th jump to the lands and option of bullet touching the lands for best accuracy. What's everyone's thoughts here?
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I agree with a few others here. there is no one absolute answer. for example I have 4- 270 caliber rifles. Two 270 Winchesters, two 270 WSM's. My Tikka loves light Barnes TTSX and TSX slugs about 0.035" off the lands (0.065" shorter than loading manuals specs) this gun also loves to over pressure everything you shoot out of it. AKA very small chamber so it gets light powder charges and delivers pin point (0.375" approx edge to edge/ 0.098" C to C) accuracy. my Model 70 Featherweight carbine loves Barnes (TSX 110 grain) and Berger (130 VLD hunter) slugs. TSX slugs 0.075" off the lands, berger it loves them 0.015" off the lands.
My Kimber 8400 Montana rifle loves Nosler (140, 150) 0.015" off lands, Berger (140, 150) 0.010" off lands.
My Winchester 70 270 WSM loves nothing.. this gun would not put 5 rounds on paper if it's life depended on it... no, not really. it likes 160 grain slugs but it depends on the day of the week where the slug should be off the lands, what powder, what charge, and what brass you use. found out the barrel has a soft spot in it and it is off getting rebarreled in Oregon.
Most every other gun I own loves what ever I shoot through them between 0.010" to 0.025" off the lands. That is lead core. when I use Barnes they usually want 0.050" to 0.065" off the lands. I tried the full 0.100" off the lands and regretted it.
Just remember this axiom, the closer to the lands; the higher the pressure for the same powder charge and down load accordingly. If I still had the pic of Craig's gun on my computer I would post it. 7MM Rem Mag, pretty hot H-1000 powder charge, Barnes 150 grain TTSX-BT, 0.005" off lands.. KABOOM! no more Rem 700 Alaskan rifle, no more Leupold scope, Bolt grenaded, Ring grenadaed, barrel stem grenaded, stock vaporized. Remington told him it took a minimum of 500,000 PSI to blow the gun like that. everything blew straight up. good for him.. not good for his trip to Montana for Elk season.