Re: Harrells Combo Press
I use the HP Combo Press for Neck sizing 270WSM cases with RCBS dies. Works perfect. Solid. Lash-free stroke. Smooth and consistent. Have recently FL-sized 270WSM cases. Although the leverage is there, my belief is it's a bit on the "light" side. It would NOT be my go-to press for FL sizing cases. For reference, SAAMI specs for 270WSM cases and .308 cases are 2.100" and 1.920", respectively.
Have NOT yet used the arbor side of the press. The channel (arbor side) clear-height is 5in. Was exploring use of the arbor side for seating bullets on 300WM cases via a Wilson Chamber-Style Bullet Seater. The Wilson Bullet Seater requires approx. 5.5in of vertical height (with a tolerance of 0.25in) to seat a bullet. If the channel were 0.5in greater (in height), the arbor press would do the trick. No such luck. Goin old-school using a wooden mallet.
Talked with a mechanical engineer at HP and inquired about a "heavier-duty" version of the Combo Press. Again, motivation for use w/ 300WM cases. No dice. I estimate a 10-15% increase in the size of the press's sub-assemblies (e.g. channel, caming mechanism, main shaft, handle), along with a change in the material properties for the channel (i.e. from Al to mild steel) would yield one bad-a$$ press. IMHO, the market is just not there for HP to re-tool to produce a "heavier-duty" Combo Press.
Differ in opinion to what "memilanuk" states re the clamp. I find the clamp retains positive x-y-z alignment to my B&D Workmate-based reloading bench. Clamp works perfect when interfaced to the bench top (1in. thick) with a 1in. block of woood (spacer).
In the near future, I plan to design/build a modified version of the Combo Press that can Neck/FL-sizes 300WM cases using threaded dies and Wilson-type dies. Need to convince my buddy for after-hours access to his machine shop......