I've used the UCB for years on my MEC juniors and love it. That said, certain conditions prevail when I use it.
1) the powder and shot bottles cannot go too low, not less than an 1-1/2" of each in the bottle.
2) once the powder and shot cavities are fine tuned, tighten the set screws
3) do NOT use for the 410 or at least be VERY careful!! particularly for 2-1/2" shells. the cavities are so small and at times do not line up perfectly (squarely) under their respective bottles. I had experimented with center screw with a smaller head to allow the bar to center under the bottles better. I found it better to just have a special non-adjustable charge bar for each 410 load; provides peace of mind.
Jack Kuzepski
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