A dispenser does indeed measure powder. It measures it by volume. A scale measures it by weight. A balance measures it by mass.A powder dispenser doesn't measure anything. Use a scale(is a powder measure) and trickler. Either way, the type of powder doesn't matter.
Almost.....A dispenser does indeed measure powder. It measures it by volume. A scale measures it by weight. A balance measures it by mass.
If you find a good sweet spot load, barring extreme temperature shifts, it should tolerate at least ±0.7% charge error without any issues showing up until you get well past 600 yards. In one instance, I had a .308 W load with the 155-grain Sierra Palma bullet over Brigadier 3032 that kept its group size anywhere within ±1.25 grains. You may be surprised to learn the tens of thousands of rounds of 1992 Palma match ammo were all loaded on two Dillon 1050s, and it did very well and was considered by many the best Palma Match ammo ever loaded up to that point in time. The lesson is, find a sweet spot load with a wide charge tolerance, then exact charge ceases to matter for the majority of practical purposes.
A lot of bench rest shooters swear charges neasured by volume are more consistent than weighed charges.I pretty much proved this to myself a few years back, i think i actually posted about it on here. It was with a .308, a 175 gr match king, and imr 4064. I threw something like 50 rounds, and hand weighed 50 rounds. I found no statistical difference in velocities, or group size despite my thrown powder being +/- 0.3 gr. In fact, i pulled apart some federal GMM .308 ammo before and found as much as .6 gr difference. ... which is now why i load it all on the dillon 550. In fact, in much of my experiments, i have found consistency in seating depth and crimp to have a greater impact than slight variability in powder charge, but thats a conversation for another thread
I was one of 6 or 7 former USA Palma Team members who developed the 1992 Palma ammo load in early 1991. We used new unprepped cases, 210M primers, Sierra's first production run of 155 grain bullets and several different powders and charge weights. 20-shot test groups with our Palma rifles with metallic sights were shot at 1000 yards. We settled on 45.3 +/- .2 grains of IMR4895.You may be surprised to learn the tens of thousands of rounds of 1992 Palma match ammo were all loaded on two Dillon 1050s, and it did very well and was considered by many the best Palma Match ammo ever loaded up to that point in time.