Blue Dot was primarily designed for magnum hunting loads in 12ga shotshells ranging from 1-1/4 ounce to 2 ounces of lead shot. Blue Dot is unbelievably elastic and this attribute has allowed numerous different loadings in different gauges and varied weights. Blue Dot encompasses a wide range for magnum loadings. It is a very slow burn rate powder with a wide variety of uses. One idiosyncrasies is that Blue Dot is a bit temperamental in cold weather.