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Join Date: Jun 2009
Location: Northern Berks County, PA
You can sort of do the same thing with just brass and bullets, but it's a major PITA and uses up components. The Hornady set is very valuable to get your distance to the lands.
The nice thing is...if you also get and use their bullet comparator collets for your micrometer, you can take that measurement to the ogive and then you have it REGARDLESS OF BULLET TYPE. You then know the distance the ogive needs to be from the casehead in order to touch the lands, and then you can quickly and precisely load to get specific distances off the lands.
I use those two tools plus the headspace collets to measure shoulder setback. I size my brass, especially belted mags, to have minimal shoulder setback (just enough to function well, which is usually 2-5 thou'). That will also help your accuracy a bit, in addition to more specific control over the jump to the lands.