01-30-2014, 05:49 PM
I've been doing some research based on some of the statements that have been made about the Liberty barrels dating back through last year.
If anyone remembers, Xcountryrider posted a thread advertising Liberty Barrels as having consistently higher than average velocities due to 5R rifling, and a significant effort was made to try to get the point across that pressure is what drives higher velocities.
It all makes sense if you consider that a shorter throat is resisting projectile jump, so the start pressure builds faster, and thus generates more velocity.
The next question is, how much more pressure do you need to achieve 300-420fps faster than industry published and piezoelectric meter tested loads that are under 51,800psi.
If anyone remembers, Xcountryrider posted a thread advertising Liberty Barrels as having consistently higher than average velocities due to 5R rifling, and a significant effort was made to try to get the point across that pressure is what drives higher velocities.
It all makes sense if you consider that a shorter throat is resisting projectile jump, so the start pressure builds faster, and thus generates more velocity.
The next question is, how much more pressure do you need to achieve 300-420fps faster than industry published and piezoelectric meter tested loads that are under 51,800psi.