You simply build ammo in accords to kiss the shortest throat. No thang and the only good move you've got. I segregate ammo for rifles,by different color,shape or style of ammo box and good notes on same. Controlling seating depth,is the single greatest attribute of Reloading. Hint.
Typically,the front of the box is a generality and their tops are particulars,with load notes affixed internally on the underside of the lid. Cain't like stickers there and use markers expressly.
Do whatever it takes,so your schit makes sense to you.
Now as to follower drag,that is no thang. As per always,I'd suggest the "Start At The [bleep] Start" Thread and take notes,then apply same. It well covers most thangs,pertaining to F/F(feed/function).
Your follower is jacked,because you [bleep] sumptin' up.(grin)
After getting a tight fitting magbox married balls deep to the receiver,you always wanna drift your follower through it's internals(upside down spring dangle) and ascertain it flies freely. If/when adjusting poorly oriented OEM magbox feed rails,it is possible to getcha an amidship magbox roadblock,that will impede the follower's travel. I simply take a chunka wedge,set it inside the box and tap lightly,so as to allow more width through the guts...less changing feed rail geometry. 'Bout 3 seconds of "work".
Not all followers is equal and if it ain't milled,it's [bleep] junk. Follower ride height and spring geometry is easily discerned atta glance and if your follower isn't fully kissing parallel on the receiver's underside,when the box has no ammo...you's got f/f issues.
Simply bend the spring so schit is riding square,prior to install and confirm that geometry ain't skewed,after install.
Hit that Thread and thank me later.
Hey...where did all the "Precision" Land Leapers go?!!?
Laffin'!