Re: Powder scale
I own two throwers and three electronic scales, plus a Pact auto measurer. All work well for their intended purpose. I don't own a beam scale anymore, but have thought about buying another 10-10 now and then. Now I check one scale against the other when I feel it's needed (almost never). Interestingly the Pact has been used maybe five times as I just don't need it much. But did have it out a couple months back with my brother in law. (he liked it so well, he bought a new one)
I've used throwers made by just about all the big players and maybe a couple others. The best one I've owned is a Harrell, but also much different as it's a true Culver style measure. (you count clicks with it). But on the other hand I've used the original Sinclair and another for long stints, and these are fantastic. At the range I use a Harrell and a small Pact BBK scale. With ball powders, it's good for +/- 1/10th grain or less, or a two tenth grain window. On the other hand with something like 4350, it's all over the place, so I throw a full grain short and trickle. The Lyman is slightly worse, but actually favor it for long grained course powders. I've used the Reddings (both 3BR and BR30), the Lee, and the RCBS. All were fairly good, and would rate the Redding BR30 the best of that lot. But I like my Lyman better!
To be fair to the rest, my Lyman has had some mods done to it. It has the Sinclair bottle adapter kit, and several different Sinclair drop tubes. I think the Redding and the RCBS would have been better with these drop tubes. The screw in bottle adapter is a must have for any of them! I also like the powder baffles they sell for some of them. (I don't use them with the Lyman as they don't work with it). The Harrell is like moving into a Cadillac!
If you use an electronic scale, I recommend using two scales in tandem. I use two Pacts plus the BBK. I always calibrate with the exact same weight (they do slightly vary). What you buy is your choice, but I always try to look for something U.S. made.