I have 3 of them, 38/357 mag, 30-30 and 308 Winchester.
Mainly I use them to do de-capping when I am in the mood to have my brass de-capped in advance.
Also use the 308 to prep some brass for neck size only loads.
I dont have a collet die so this works well for that.
I also like to take some pre- prepped cases and the loader to the range while doing some load work ups.
That way I dont have to take a whole bunch of loads that dont work.
I just shoot my 5, Reload another 5 and repeat until I find my load.
And some times I just reload with it, because I can.
They make good ammo.