Well Iâ€™ve been altering 22 ammo for awhile now. Anything from flattening the heads of the bullets with a file or nail when I was a kid to using commercial tools as an adult. I bought a Paco Kelly tool years ago; this thing is literally a blast!!! I take it to the range with me & play around with it. The main shaft of the tool has 2 different sizes, the 3 ringed side is .223 & the 4 ringed side is .224. So when I alter bullets or just want to make sure that the bullets are round, this tool comes in handy. The kit comes with 3 different pins to alter the tips of the bullets, a hollow pointer, a scorpion nose (this thing is devastating on game) & a dish nose. From left to right: a resized bullet/plain head, a small hollow point, the scorpion nose, a small dish/swc, a large dish nose & a large dish nose hp. These altered bullets allow me to make excellent hunting ammo & really put the smack on game at further distances than Iâ€™d normally shoot due to the extremely effective design for expansion with the soft lead 22 bullets. The hp tool can make small holed hp to large holed hp. I normally donâ€™t use that tool to much because of all the readily available hp ammo out there. But used in conjunction with a dish nosed bullet, it makes a real nasty hard hitting hp. The scorpion nose design is devastating on whatever it hits. That bullet just shreds as it penetrates & basically implodes whatever it hits. I love to shoot crows with this bullet, it literally lifts them up a foot in the air then they explode throwing feathers everywhere. The dish nose/nasty nose design is something else with its concave design. It just digs into whatever it hits just like a wc bullet does to paper. When I add a hp to the dish nosed bullet I end up with a wicked hard hitting varmint killer. When I first got the Paco Kelly tool I took it to the range with a pistol to play around with. Out of the corner of my eye I saw a groundhog at the far end of the range just eating away & watching me. I made up 1 of the nasty nosed hpâ€™s & waited for it to stand up. It didnâ€™t take long & I hit him right in the chest with that bullet. It was pretty slick to watch, everything was in slow motion. There was the pistol & a click of the trigger, then I could hear a slap when the bullet hit the groundhog & it fell straight back with its arms going straight out at the same time. It was only a 25yd shot but that groundhog was dead before he ever hit the ground. Iâ€™ve taken several more with this same bullet; it really thumps whatever it hits.