There are many knowledgeable reloaders on this forum. What is your response to this situation. The same standard large rifle primers are used in the following cartridges: .30-30 Win, .270 Win, .30-06, 7mm Rem Mag, and .45-70 Gov. Numerous reloading books, articles, and internet documents warn of "signs of high chamber pressure", "flatened primers", and "primer flow".

Without quoting numbers and pressure units, the ascending chamber pressure, lowest to highest, for the above cartridges would be: .45-70, .30-30, .30-06, 7 mm Mag, and .270 (the data I looked at gave .270 Win higher values than 7 mm Rem Mag).

My discussion point: How does primer condition give pressure warnings for .30-30 and .45-70 loads when .30-30 chamber pressure is ~1/2 and .45-70 is ~1/3 that of 7 mm Mag or .270 Win? I ask this in the context of a new reloader trying to comprehend the wealth of information available in a few keyboard clicks, while trying to make "safe" reloads. I consider myself informed about reloading, but not an expert.

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S&WHF 366