highlander 5
Member
5744 might work as well for cast bullets as well.
Please don't shoot any more 777 loads with less than a full case, especially with as much air space you are creating. You're lucky you used a BP substitute because I'm sure by now you would have kboomed already with real black powder.I am trying to find some trail boss online. I just cannot find any place that has any in stock.
....I do find it hard to believe that 7 grains of powder would even have enough energy to blow up a rem 700.....