Ysterhout Dot Net
This unit works well where a free-standing, stable base is needed where a bench is not available. It works equally well with a Lee Loadmaster and Lee Challenger.
This size unit it too light for any press that primes on the upstroke, like the Hornady LnL. Priming on the upstroke required a force that acts to tip the press backwards, which this design does not compensate for.
The Lee Loadmaster looks like a large press, but it is aluminium, and so it's light. My Lyman T-Mag II is heavier. The weight of it, together with it's compact dimensions make it a good choice for a portable press.
The Challenger is a bit smaller, but unless you need to load longer rifle cases, the progressive capability of the Loadmaster makes reloading more convenient.
Volumetrically, the difference between the Lee Loadmaster and Challenger that I have with their mount plates attatched is not enough to make one preferable to the other.
The field trial of the setup went smoothly. Using the Lee Loadmaster, I get a little flex on the downstroke, which is because of the resistance of four cases in four dies simultaneously. Cycling the press with one or two cases on the shellplate at a time goes very smoothly without the flex, so if I lube the cases before reloading I should get no flex at all with a full shellplate.