Re: Gunsmith recommendation to chamber AR 15 to 223 AI
223 Ackley at 55kpsi will push a 40 gr bullet 50 fps faster than 223 at 55kpsi.
223 Rem at 75kpsi will push a 40 gr 300 fps faster than 223 Rem at 55kpsi.
223 Ackley at 75kpsi will push a 40 gr 350 fps faster than 223 Rem at 55kpsi.
Conflation occurs when the identities of two or more individuals, concepts, or places, sharing some characteristics of one another, become confused until there seems to be only a single identity — the differences appear to become lost.
Case capacity increase from Ackley improving a chamber would be an independent variable.
Velocity would be a dependent variable.
Peak pressure would be another independent variable.
If we measure the effect of case capacity increase on velocity, but do not control [have unknown change in] peak pressure, then we have an out of control variable.
Out of control variables have been associated with bad science, cheating, and having a screw loose.