I load both 2 1/2" and 2 3/4" 16 loads on the same MEC Sizemaster. The penny/quarter spacer works nicely with no adjustment needed (other than the powder bushing) between the sizes as I roll crimp my 2 1/2" loads.

I have several 16s and have found that the hulls do need to be resized at each loading.

Nothing wrong with a MEC Jr but my advice is to purchase a MEC Sizemaster. Much better setup in my opinion but it is your money I'm spending.

Mike