Muddyboots
Well-Known Member
Pretty simple philosophy, read pressure signs based upon your understanding and experience. Velocity is NOT a pressure standard indicator period. There are too many variables that contribute to velocity. Longer action, freebore, better brass, longer barrels, different primers, different powder lot, different bullet lot numbers, different environmental conditions such as temperature ad nauseam. Read all pressure indicators to understand what you load is doing. I have a 1968 Savage 110C in .270 Win that could NEVER reach a max load due to VISIBLE pressure indicators. Could NEVER reach the published velocities by Hodgdon, Nosler or Hornady. So in this case velocity was lower than expected but pressure indicators showed it was topped out. No pressure instrumentation but just experience said otherwise. I swapped barrel out 5 years ago and voila! Now it gets there.
Every bullet generates a different pressure curve that is also different for every rifle. You as a reloader are required to understand these concepts. Pressure instrumentation on a highly specialized pressure barrel designed differently than a standard rifle barrel. Rifle manufacturers and associated rifles off a production line are all different. Reamers wear, workers maybe not in their game, barrels that less than expected ad nauseam. So how in hello can they duplicate a designed pressure barrel that is not even a rifle by definition!
Those who choose to learn prosper.
Every bullet generates a different pressure curve that is also different for every rifle. You as a reloader are required to understand these concepts. Pressure instrumentation on a highly specialized pressure barrel designed differently than a standard rifle barrel. Rifle manufacturers and associated rifles off a production line are all different. Reamers wear, workers maybe not in their game, barrels that less than expected ad nauseam. So how in hello can they duplicate a designed pressure barrel that is not even a rifle by definition!
Those who choose to learn prosper.