Excerpt from Fouling Shot 267 By Larry Gibson In the past I have posted this explanation of why I drill out flash holes for use with low end reduced loads: "I shoot many thousands of squib loads in various calibers but mostly in .30s. Many of these are rimless cartridges; 30-06, .308, .308 CBC, 7.65, 7.62x39 etc. The squib loads I shoot most often is a Lee 314-90-SWC-TL over 2. 7