so this fancy seating off lands thing........IF you rifle likes a particular factory load...and you using similar projectile...set up your seating die USING the factory load... and go from there...if the roundy bit behind the pointy bit is similar......because the seating die contacts the roundy bit part way down....well it stands to reason your projectile should contact rifling at similar amount of jump from case.... sometimes its way overthought and for bush ranges it wont matter a shit.... sub inch is lovely if you shooting out 400 or more but under 350 an inch or 2" at a pinch will still get your deer IF you dont try fancy stuff and aim centre shoulder.....
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