Those are very good bullets. They used to be cheap, but not so much any more. You just have to be careful not to run the velocities up too high or too fast. They were designed to give 22-250 like blow up in a 1-14" twist barrel at 222 velocities. If you run them up to 3400 fps and with a 1-9" twist rate, they will probably blow up coming out of the barrel. Even if they hold up to make it to the target, they may blow up on the surface if they are on the ragged edge of blowing up to start with. I know at around 3000 fps muzzle velocity in a 1-14" twist they go into a wood chuck and do not come out the other side from 10 feet to out past 250 yards on body shots. I red misted a woodchuck at 100 yards with a head shot, not body shot. At 100 yards they will make a pile of feathers out of a crow.
It is very hard to get a bullet that will perform just the way you want over an extended range. Get it too soft and it will blow up on the surface, but penetrate well and not go through at 200 yards. If the jacket is a little too tough, it will whistle through at extended ranges, but perform OK at closer ranges. The key is bullet rotation and velocity. Bullet are designed to work with a certain velocity range. Much lower or much higher, then they will not perform as wanted.
BTW - the 50 grain SPSX were very accurate out of my Remington 700 in 222.