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Message: <blockquote data-quote="Master Carper" data-source="post: 4101307" data-attributes="member: 15527">I had two calls late this evening, with both guys wanted to know why I used such an odd powder like  SR4756 instead of something else like Blue Dot, 800X or Longshot powder.From "my" reloading standpoint, here is why:1 - SR4756 is a single base powder...2 - Depending on loading components used in a particular load, SR4756 is a relatively low pressure powder, as compared to the other three powders listed...3 - SR4756 is kind of a bulky powder...4 - Most importantly, SR4756 has a long pressure curve and builds pressures more gradually down the barrel, as compared to powders like Blue Dot, 800X and Longshot...5 - SR4756 has a wider range of "workable loads" as compared to the other powders listed.The only downside to using SR4756 powder, is that with it being a single base powder, you have to be mindful of the outside temperatures. Once the temperature drops below the freezing mark, this powder will leave a lot of unburnt powder in the barrel, and as such, velocity and pressure will drop down dramatically, depending on the exact temperature...So, when the temperature starts getting close to the freezing mark, I'll switch to my 7/8 oz. high velocity load using Red Dot powder, which does very well in freezing temperatures. This load is also loaded with copper plated #6 lead shot and for a relatively light load, this load does perform very well!</blockquote>