I recently took on the task of reloading for and shooting the 460 S&W magnum in a 15 inch encore with iron sights. I started with some 200 grain bullets and H110 powder. I had heard that I should use magnum rifle primers due to the high operating pressures of this round. I had already loaded 20 rounds of ammo using large magnum pistol primers. I made 30 more rounds using large magnum rifle primers. Next, my 300 grain Hornaday XTP bullets arrived so I loaded 5 of them.
I finally got to go to the range. I was aprehensive about the recoil of this weapon so I shot the first two rounds off hand. No pain but it did drive me back a couple of steps. I am 6'2'' and 285 lbs so I was surpised at the amount of push of this round.
The fourth round went poof!! When I opened my chamber, lumps of melted H110 powder fell out and my bullet was lodged just in the rifling. I left the range and went to a freinds who took a brass rod and tapped the bullet out. I then remebered having the same problem with a 45 LC, many years ago.
I went back to the range and selected the rounds with the large pistol primers, they all fired. Next, I selected the 300 grain loads, with H110 and not only did they fire (omg) but all powder burned clean, unlike the 200 grain bullets that left unburnt powder in the chamber and made extraction of the cases difficult at times.
Finally I began fireing the 200 grain loads with magnum rifle primers and soon I got another poof-faliure to ignite. I took the firearm home and used a brass cleaning rod to tap out the bullet.
Yes, I did us a heavy roll clrimp. Please share your experiances and favorite loads & bullets.
Thank you.