07-29-2020, 09:38 PM
(This post was last modified: 07-29-2020, 09:45 PM by Lemonaid.
Edit Reason: X should of been M
)
I'm going through the same thing in reverse! Comparing the 6mm ARC data to what I'm getting in my 6 PPC. I am reducing the Max charges from the ARC by about 1.5 grains to get close to the velocity that the ARC data for 24" barrels are listed.
Perhaps someone with QuickLOAD could check if the difference in case capacity/volume is enough to be why.
Empirically when enough ARC reloaders compare their number it might point out if the Hornady data is reliable or needs adjustment.
Next Range day (Saturday) I'm testing the Hornaday 108 ELD M and CFE 223 at 27.0 grains and will post the numbers for anyone interested.
Perhaps someone with QuickLOAD could check if the difference in case capacity/volume is enough to be why.
Empirically when enough ARC reloaders compare their number it might point out if the Hornady data is reliable or needs adjustment.
Next Range day (Saturday) I'm testing the Hornaday 108 ELD M and CFE 223 at 27.0 grains and will post the numbers for anyone interested.