|
The 7.5 is a harder cup ( they often recommend the small rifle magnum, or bench rest for 223 semi autos, to prevent slam fires )... I would suspect that with the super high pressures of the 454 ( I have one that I have all the stuff to load for, but so far have not found the time ) that Freedom Arms thinks the harder primer cups, might be safer / hlp prevent pierced primers on this very high pressure round... the only negitive, would be if the revolver didn't have a heavy enough hammer spring to reliably ignite the harder cup... but assume since they are recommending the harder cup, they have already seen to that...
|