I'm loading a 140 grain hunting VLD with 52 grains of RL22. My overall length is 3.165. This is just touching the lands of a Schneider P5 1:8 twist 26" barrel. 6.5 x.284 Norma. Which way should I set the bullet? As is or +.005 or -.005 to the lands.
Berger says .010 in "jammed" .040-.120 off the lands.I got lucky and just loaded them mag length in my AI AE.I shot a total of about 12 rounds for load development.
For a normal carry about hunting rifle bullets seated into the lands can cause problems. I think for safety you should seat just off and or further back not jammed into the lands.
For ammo fed one at a time in target , varmint and long range guns that don't get carried about in the bush the situation is different.
If you do jam to the lands, back off on your powder a bit.
As to which is best, you will just have to try it. Different rifles, different bullets like different distances to the lands. Sometimes it doesn't seem to matter. Berger says it's bullets like to be close or on the lands. YMMV