We shoot a winter skeet league here in northern Wisconsin, so we get plenty of opportunity to test loads in cold weather. I've switched to Extra-Lite pushing 7/8 oz shot in my vintage Brit 12. Pressure runs around 7500 psi, very clean-burning, no bloopers at all. Sometimes up to an ounce for some Sporting Clays targets. Powder charge is relatively light, in the 15-16 grain range, depending on the specific load. I'm a big fan.