Happy2Shoot Wrote:Unless you are recording pressure vs time, you are only guessing about safety.
That said, start with a reloading book from the bullet manufacturer you are using.
If you only make one or two small changes at most, you should be fine.
If you make many changes, even small changes, you will be in unknown territory. (Example: If you change the brand of the cartridge case, brand of primer, seating depth, and brand of bullet (still the same weight), you could easily be off by 10kPSI.
OK, so with the old time EXPERIENCED reloaders here, can someone please explain how switching brand of primer can do to the PSI and actual changes if they are all supposedly are to be to SAMMI specs? I have Federal and CCI mainly but have been using my few Remington primers up. And lots of people were saying during the shortage to substitute magnum for regular with no issues which i DID NOT. Or am i just ignorant? (Yes I know how the other parts of the cartridge can.)
Thanks & much appreciation for the answers.
Humbly,
Frank
Live life to the fullest.