TomJ
Contributing Member
Attached is the link to an article from Buffalo Bore regarding the New Vaquero as well as a warning from Underwood's website for their +P ammunition. If I have time I'll call Ruger during the week to clarify what ammo could be used. My gut is telling me to err on the side of caution and listen to the ammo manufacturers when they tell us not to use their ammo in a gun.
https://www.buffalobore.com/index.php?l=product_list&c=153
These loads are safe in all large frame Ruger revolvers, TC Contender, and Colt Anaconda. These loads are safe in all modern Model 1892 leverguns as well as all Winchester & Marlin 1894's. These Heavy 45 Colt +P loads are NOT intended for the New Model Vaquero (small frame). DO NOT USE IN ANY OTHER FIREARM. THESE ARE NOT STANDARD PRESSURE CARTRIDGES! Do not use +P ammunition in firearms that are replicas of early designs, such as rolling blocks, Sharps and Colt-style single action army revolvers.
https://www.buffalobore.com/index.php?l=product_list&c=153
These loads are safe in all large frame Ruger revolvers, TC Contender, and Colt Anaconda. These loads are safe in all modern Model 1892 leverguns as well as all Winchester & Marlin 1894's. These Heavy 45 Colt +P loads are NOT intended for the New Model Vaquero (small frame). DO NOT USE IN ANY OTHER FIREARM. THESE ARE NOT STANDARD PRESSURE CARTRIDGES! Do not use +P ammunition in firearms that are replicas of early designs, such as rolling blocks, Sharps and Colt-style single action army revolvers.