I can also recommend the DPT, mine has a couple of extra baffles on but, it's a 308 cal, for my 308... I've another 308 cal mod that I mostly use on it and it's an Atec maxim. These are what I use on my 22-250. Haven't got a 224 specific mod for the 22-250, never thought I needed one. Like has been said, the DPT can be a bit on the long side if you add baffles but, they are a smidge quieter. I know Atec have had a knocking but mine is five years old and had a few hot rounds through it and it's as good as the day I bought it. These are used for stalking and a bit load development, I'm not a target fan. Bit of bike inner tube stretched over them takes the ping out of them and quietens them up if you bash them about a bit, like I seem to do...
cjs