ORIGINAL: Pavomesa
Recoil? What rifle are you loading for?
Know this that the fastest way to reduce recoil is to simply shoot lighter bullets. Recoil goes up fast as bullet weight increases. On the other hand, varying powder charge a grain or two for any given bullet won't make much difference.
IF you can pull those bullets without dmaging them, so you can put them back into the ammo after you weigh the charges, then do it!
I don't weigh every charge if the powder in use is one that meters uniformly in my old Redding Master powder measure. Mostly, ball powders and some small-grain extruded powders like IMR 4320 do this quite well. Using such powders, I will "sample-check" every fifth round. However, I rarely load more than a max of 60-80 rounds at a session any more, and then only certain calibers. I WILL weigh every charge when using large-grain powders like IMR 4064, or H4831, etc. What I do on these is throw them with the measure set 1-2 grains under the selecteed amount per the powder scale, and then bring each charge up to snuff in the scale pan using a powder trickler. Admittedly slower than what can be done with the new powder dispensing units, but I am in no hurry.
And I do have some very accurate rifle loads in which only a half-grain difference in powder weight can result inan inch or more difference in group size. Believe it or not!