I guess I've go something to look forward to, my 550B only has about 120,000 rounds thru it, but that took 28 years come Christmas. at my age I may never get to 300,000 for the failure unless I quit doing everything except shooting and reloading.
I see in the latest Blue Press that they now have a RL 550C, I noticed a different arrangement on the powder measure, are there other changes?

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Certified NRA rifle instructor