I have been using a Lyman 55 powder measure over 40-years. The standard powder reservoir is more then adequate when loading pistol powders, but I find I need to refill it to get those last few cases when loading a one hundred 270/30-06/7MM Magnum cases.
The standard powder reservoir is rated at 2500 grains of powder and an optional reservoir is rated at 7000-grains of powder. It is my assumption the ratings are based on the density of fast burning pistol powders. There is no-way that you can get 2500-grains of H4831/H4350 or H870 into the standard reservoir.
The standard reservoir in my old Lyman 55 easily screws out of the cast body. I order and received the new 7000-grain reservoir the other day. It is not threaded and will not slip into the body. I called Lyman support and was told to heat the reservoir in a pan of warm, soapy water and it will self-thread into the unit. After an hour or so of failure, I tried holding the unit in a vise and screwing the reservoir into it. The unit fell out of the vice striking the cement floor. The handle on the drum broke off. The vise stunt was my fault.
I cut a jig in a cardboard box and I have the two parts in it, held with a C-clamp. I am using JB Weld to stick them together. Hopefully it works.
I have read a number of complaints about the Lyman 55, but I have gotten a lot of years of good service from it. I have found that when loading Red Dot, WW231, Bullseye, Unique, 700X, 800X, Alcan 5,7,8, PB, and 2400 all I need to do is set it up, and check the load every ten rounds. I might be checking it too often and every twenty rounds might be adequate. It is very consistent when using pistol powders.
It is real smooth with slow burning ball powders, but it does crunch some sticks when load H4831, but no big issues when loading IMR4064, or IMR4320. I have an old Lyman reloading manual from the early 1960’s that gives the settings for most of the powders I load. It allows for a quick setup, followed by fine turning.
I am not happy with the 7000-grain reservoir. I will be writing Lyman regarding my negative experience.
This is the time of the year I do most of my loading. The loss of the powder measure is a hang-up. I have a few other options but I prefer the using the powder measurer. I could go back to the days before I had a powder measurer, using scoops and spoons to feed the pan on my scale.
I check the price of a new Lyman 55 and it varies from $80 to $100 with shipping added on. I checked e-bay and there were a few offered. I made a run at the nearest gun shop, and pawnshop, no such luck. I came across a new-old one in the box. It has never been used and the asking price was $40. I bought it; I believe that Lyman has changed their manufacturing process of the model 55 a few times over the years. I am happy to get a new, old 55. If the JB Weld works I will have one 55 set up for pistol loading and the other for rifle.
I will be following up with a letter to the vendor.