Jon Beanland just cut my HSP to hold a Krieger MTU profile. Sits in there perfect, and floats like it should. For all the heck the HSP get's they do a good job. I have Hart HV in 6mm that's lived in an HSP for years of BR shooting and groundhog shooting, and it still put's em in the .2"s @ 100, and still rigid. My 260 "will" go in a chasis one day, but as long as it's doing like it does I'm happy.