Personally don't agree with this methodology.
Started out reading that this was the way (chase the lands, seat X thou off etc.), didn't have terrible accuracy but not that awesome either.
Learned about bullet designs and Tangent/Secant/Hybrid ogives.
Researched the original cartridge specs.
Then started to load 'jump friendly' bullets to factory length, and magic happens. This was most pronounced on the .308.
Does not help when there are no clear definitions on target vs. hunting loads, seen guys trying to replicate some sort of F-class load on their hunting rig.
If your rifle is wearing a factory barrel then neck-turning/reaming won't do anything and seating to the lands is probably going to make the rifle a single shot due to mag length restrictions.
If I were to start someone off I would say find a factory load that shoots good, then replicate that 1:1 or as close as possible, then progress from there.
Reloading is either about saving money or working up a super-tuned load, trying to do both at the same time usually doesn't work!
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