Thread: Anyone crimp

I had a .22 Hornet for a while, ordered some .223 bullets in specially for it. Stupidly I checked them with the mic - no difference to the .224 bulk pack ones I was using prior to getting them in. I had used half of the pack at that stage - from that I'm not really sure that the 0.001" difference is actually that important if you work up the load properly. Fairly soft bullets, and the bullet has to mash into the rifling etc so I guess it all comes out in the wash...

As far as the question, crimping for subsonics - found it makes quite a difference to the velocity spread. I think that the primers create a wee bit of pressure and with lubed cast bullets it's probably shifting the bullet forwards on some of the rounds and altering the ignition.