Ive had good luck getting them to shoot in the calibers Ive tried (270, 7mm, 30, 35, and 375) by just seating them to the cannelure. Im sure seating them for a .010" jump might shrink groups a bit, just never felt the need. Makes it easy to use ammo from one rifle in another of the same chambering.
Only ones that seemed a fit "finnicky" were the 139 and 154 gr bullets in a couple 280's. IIRC switching powders eliminated the finnicky-ness 😀
