I have one bolt action .223, one 14-inch Contender in .223 and three AR’s in 5.56.
The bolt gun is my hunting rifle for a prairie dog trip once each year. I only shoot it in prep for this trip and on it. All of it’s ammo is neck-sized and relegated to only that rifle.
For the Contender, all ammo is FL sized.
For the AR’s, all the ammo is purchased in bulk.
While I love loading my own, FL sizing and trimming is a-ok for the first two but for high volume bang bang bang AR’s, I would hate life with all that labor.
For my hunting rifle, I get fantastic accuracy with my neck-only sized rounds and I can skip lubing and skip the labor associated with FL sizing AND my brass, formed to that rifle, lasts a long time.