Haha that's what I did for my 416 rem.
Some head scratching over powder (ended up with 2206 only because it could do lighter bullets-more useful for deer type animals here in nz). Started in the higher level of middle and had loads I reckoned to do 1"ish at a hundy. Only shot at 50 as it was handy and still had some ammo that it was sighted in to use up first.
A couple put over a mates chrony a while later showed very good velocity, actually very close to the full load specs from ADI.
Which is also a classic example of why you are meant to start low lol.
Fast forward to recently, an acquaintance put some down range with his batch of 2206 and went with a mid range load about a grain less than mine.
Applicable drop in speed by about 100-150fps but was shooting moa at a hundy.
Just a good mix of powder, projectiles, cases and rifle
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