Squib loads are all the rage in most range competitions..... IPSC has a minimum power factor so one tries to download to it but not less than..... In PPC, the squib loads are so pronounced that it has been known to have a lightly charged bullets get stuck in the bore on occasion...... I'm not personally against squibbing for practice because any practice is better than none, but if one can't take a full power load when it counts in the field, then it becomes problematic. I think that the notion of having a competition like the double rifle big bore shoots in Australia are great, and maybe extra points or some scoring accelerator factor should be awarded to those who bruise up..... It's a hard thing to measure and police though......