I have used nothing but Thummler's & wide-mouth (1 gallon) "pickle jars" since I began making bullets some thirty years ago, sans any modification of the jars -
just fill them 3/4 full. For some applications, I use tin coffee cans, which also, "never wear out" (well, not thus far). I all that time, I have cracked one jar - my clumsy handling caused a little too much BUMP!
The Thumler's work almost daily, tumbling up to 24 pounds,
but usually about 9#, without a single failure to operate in all that time. The new one (same model as AL & Dave have) is only about 15years old now -
the OLD, most used one is a one level down grade!
Oh, I forgot, the jars and cans simply replace the containers, which I use only for "other stuff".


The only wear has been the rubber drive collars (the cans cause that) and a couple of drive-ring (belt) replacements. Nothing else (other tumbler's/vibrators) has worked as hard, or, as long as the "lowly" Thumler's Tumblers.

RG