Velocity, using 25 grain Hornady hp, mine is right at 3400 fps, lighter bullets, 18 - 20 grains,you can expect slightly higher. 200-250 yard coyotes could be killed, and I have, but thats a long shot with any calling rifle. If your calling them, shots should be in the 25-75 yard range most of the time, just no need to shoot much farther.
Mine is on a T/C action, with a Bullberry barrel, I don't like the longer barrels, so I use 18-20 inchers, makes for a real handy overall length package.
There are one or two places where you can obtain sized brass if you dont want to go to the trouble of forming your own, otherwise, you need a form die, you can buy one on the Bullberry website, then just use over the counter Redding loading dies for reloading. I used to use the suggested method of stuffing pistol powder topped off with tissue paper for fire forming, but now I just laod them up with 25 grain bullet....they are very accurate, they just look odd with the two shoulders and odd shape, but shoot fine.
A great caliber,and good shooter, I love mine.