I use a Hornady LnL progressive press, and a Lee Classic Cast. The Classic Cast can use an insert which then allows reloading dies with the LnL bushing to be used in that single stage press. I like the LnL bushing system.
Every time I go to Cabelas I look for bushings; there is a package that contains six (6) bushings plus an insert, for $19.99. I look at the other package which contains ten (10) bushings for $44.99, and wonder who is buying that when they can get six for less than half price.
Each time, of course, I have an orphan bushing insert. I have been puzzling on those inserts as they seem like they should be useful, but for what?
Finally, it dawned on me. I'm always swapping reloading dies, laying them on the bench, a shelf, wherever. They want to roll, and it's not an effective organizing system.
So I went looking for something that would accept the inserts and guess what? You can buy couplers at the local home store (mine is Menards) which have the same threads as the press.
You can see below what I do with them. Originally I wanted to mount them in a board that I would suspend from a shelf, but it turns out the couplers work just fine on the bench.
There are two tips here: one is to use the inserts for a use such as this; the other is that you can get the bushings cheaper if you buy them this way. There are a lot of those kits that show 3 bushings and the insert for $10.99 or so, but the
Cabelas kit has 6 bushings and the insert for 19.99.