Hey all a newbie here. I am looking for some load data. I am using 55gr M193 bullets with Ramshot X-terminator powder. I am confused about what disk size to use on the Lee Auto disk powder measure. It is currently on the 1.57 hole. Is that too much or too little of a charge? The powder chart that lee sent with the kit is not very helpful. Any info is appreciated. Thanks.
Welcome to the forum and to reloading. Thanks for asking our advice.
The Lee Auto-Disk (and their volume-calibrated dippers, too) seem to deliver (drop) lesser weights of most powders. This behavior is fairly widely known in the reloading community and it is generally accepted (well, accepted almost as a fundamental dictum) that all charges should be verified as to weight.
The fact is that all mechanical powder measures deliver powder by volume, but almost all powder recipes are specified by weight.
Thus most loaders verify that their powder measure setting or chosen disk cavity is delivering the amount of gunpowder desired (which was chosen from a manual that specified weight).
Scales, of course, are not affected by the settling of powder (packing ratio) due to vibration or granule shape.
It is possible to load safely without a scale, relying only on volume measurement and density figures, but it is more convenient and saf
er to load with charges verified by weight.
Electronic scales are convenient, but most of the cheaper ones are not reputed to be reliable, especially in the face of uncertain battery voltages (as they lose charge), "dirty" AC power or near sources of electromagnetic flux (flourescent lights, electric motors or power cords, principally). Gravity-powered scales are generally the most reliable. Among them, the Lee Safety Scale is the least expensive at around $25 to $30. But it only weighs up to 100 grains, so if you ever want to weigh bullets heavier than that, it won't. It is as accurate as any common scale, but uses a vernier to determine tenths of grains. Many people find verniers difficult to read and hard to understand. Most other beam scales sold in this country are made by Ohaus and carry RCBS, Dillon, etc nameplates and paint. They are easier to use than the Lee and can weight heavier weights but are no more accurate and cost at least twice what the Lee does.
Good luck
Lost Sheep
p.s. I notice that no one has given load data, expecting that you have a manual from which to choose a load. Most reloaders consult several sources while choosing a load. Published manual(s), web site of the powder manufacturer and web site of the bullet maker are the most likely places to find load data. Casual sources (like forum postings) need to be vetted before they are relied on. Many loaders have a rule against sharing loading data because if something blew up for a reader of what they wrote (for any reason whatsoever), the would feel (partly) responsible.