I've used W748 and H335 for over 30 years in my bolt gun (Rem 788 in .223 Rem) shooting cloverleafs @100yds using 40, 50 & 60gr SPs, HPs, V-Maxs, & B Tips. Lately I have discovered Benchmark & H4895 for the 60-62 gr V-Max & Varmageddon in the AR.
As to metering: I don't bother to weigh 748, 335, & Benchmark. Once I get a good load established I set the Redding powder measure and load up. I'm torn on weighing H4895. It is a very fine, needle-thin stick powder that meters much better than the usual stick powders like 4350 or 4831 that I use for bigger bores.