I am like downwindtracker2 - in the past I used RCBS Uniflow and now have a Lee brand machine. I found is a "trick" to getting those machines to throw identical weights - was nothing to it with fine ball powder like old time 748 or 760, but I never could get to trust what I threw with IMR 4064 and similar "log powders". Most of my loading was for 243 Win or 308 Win - if I just wanted "blasting away" ammo and knew that I was several grains below Max in that rifle, I would get the powder measure set as desired and throw directly into the cartridge case - even at the worse, I was sure that I was not getting to or over Max loading, but likely every 10th throw was onto scale pan of beam scale and I would weigh it to check.
Set up your powder measure - throw 10 or 15 cycles - weigh each one on your beam scale - you will figure out the plus and minus range that you are able to throw with that powder - might discover alterations to your technique that reduce that spread - tapping it on down stroke; tapping it on up stroke; no tapping, etc. - is what you and it are capable of with that powder - have to load your cases within that capability. That "old days" Lee Loader kit was entirely using volume scoops - was no weighing, ever - except I think those loads listed were pretty mild - might have even been Start level loadings. There used to be old timers like Richard Lee and Elmer Keith that claimed "volume" of powder was more significant that "weight" of powder - or at least "as good as" for re-loading - not sure where that thinking went - does away with "need" for better and more expensive scales - so might be what happened ...
Funnels - currently the one that I use says it is "Herter's, Inc." It is clear plastic. Formerly was RCBS green plastic - not sure where that one got off too. Funnel spout is tapered upper inside end - so it does sit fully on the upright case, "sealed" against various size of case mouth - taper means that powder falling through is centered - smallest I reloaded was 22 caliber - so like .223 Rem and 22-250; largest that I loaded was 45 caliber - like 45-70 and 458 Win Mag - same funnel used.
Powder measures - I am actually set up for two ways to meter powder - for decades, I used the powder measure into scale pan, then onto beam scale and use trickler to bring up to desired weight - so tried to get powder throw 0.3 grains or so less than what I wanted to end up at. Excuriatingly slow way to do it. Once to weight, then dump scale pan into funnel on empty brass - do about 5 like that and then seat bullets. Repeat. I also have an RCBS Chargemaster Light - is a powder measure, trickler and scale all in one - touch buttons to get desired weight - is what you get. When it says 43.2 grains, is also 43.2 grains on the Hornady beam scale - close enough for me and the rifles that I use. When running the Chargemaster, I usually seat the bullet while the machine is dispensing the next load. Many times for batch of 50 or 100 rounds, I will not cross check loads from Chargemaster to Hornady beam scale - I just load what the Chargemaster dispenses. Is typical to go through calibration sequence at start of each session - unlike the previous Lyman that seems to want to re-calibrate about every 5th or 6th load.