Squib round shoots through magazine of competitive shooter's rifle - GIF and video

[Frank S]

A lot of guys who own .357's will buy .38 special ammo to fire through them because it is cheaper has 1/3 the recoil Their problem arises when they go too light like ammo that would be better suited for a short barrel snub nose than a 6 or 7" barrel both likely have the same 1-16 twist rate but the longer barrels can require more pressure than the light load low grain weight bullets could develop Not so much problem with store bought ammo but many hand loaders don't get their powder grain correct all of the time. Guys who load dumb-dumb rounds or rounds that have deeply hollowed out bases often load too hot for the weight remaining in the bullet causing them to over expand and squib.