per firearm how many different bullet weights do you have per? although i have many of the same cartridge in the same platform (ar and/or ba) that have the same barrel length and twist i shoot many different weights and types in the same firearm. 26 and 30 cals are the biggest spread of weights i have. back when i only shot a mod70 pre64 in 264wm my preferred weights were mainly sierra 100hp and 140sbt's. both would have the same "0" @ 100 yards as not to change that. i've changed a lot on the way and how i reload due to having a variety when it comes too more than 1 firearm in the same cartridge. with having 5 different 26cal (6.5gren, 6.5creed, 260rem, 6.5prc & 264wm) cartridges that have a total of 12 firearms in that caliber and can tune 1 or 2 bullets per firearm. 30cal is my next variety in cartridges of 3 for now (300bo, 308win & 300wm), but will add 2 or 3 more (300wsm & 300nm and maybe 300saum). other cartridges i have in rifles are 1 or 2 per caliber (5.56, 243win, 6.8spc, 270win, 338lm & 45-70gvt).