According to the manual this is all it says
“Plus-P’, “PIus-P-Plus” or other ultra or high velocity ammunition generates
pressures significantly in excess of the pressures associated with standard
ammunition. Such pressures may affect the useful life of the firearm or
exceed the margin of safety built into many pistols and could therefore be
DANGEROUS.
“Plus-P’, “PIus-P-Plus” or other ultra or high velocity ammunition generates
pressures significantly in excess of the pressures associated with standard
ammunition. Such pressures may affect the useful life of the firearm or
exceed the margin of safety built into many pistols and could therefore be
DANGEROUS.