I am trying to work up a load for my Marlin 45-70 CB. So far I've used Rapine 250, Lee 340, Ranch Dog 350, Ranch Dog 425. I've also tried Reloader 7, 4198, 3031, Varget, and now 5744. Best results so far is Ranch Dog 350 and 5744. BUT I am having a heck of a time trying to sort out why I constantly get a FIRST SHOT FLYER. And its always high bringing a 2 1/2 to 3 inch group out to 5-7 inches. If I shoot 4 five shot groups in an evening, letting the barrel cool between groups, the first shot of each group will go high, the remaining 4 will cluster into an acceptable group. Velocity is just under 1700 fps. If I ever get this worked out I plan on using this for Lever Action Silhouette. Thanks in advance for your suggestions. Doug