Some years ago I bought one of the Load Force instruments from Shootingsoftware.com. They don't seem to have it available currently, but the basic tool is a transducer that measures the force applied to the base of a case during seating. Some folks sorting by seating force claimed an advantage and others said they couldn't see it. I didn't see much initial difference and laziness set in and I didn't finish studying the idea. I should get it out again.
The AMP press needs the Wilson or other inline arbor press type dies. I don't own those, but German Salazar's tests showed they didn't outperform the Redding Competition Seating Die for finished round concentricity, and I have had great luck with that product and wouldn't switch to a press I couldn't use it with.
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