Yup, did last year, but the opportunity to harvest and elk did not present itself. Will try again this year.
If you intend to use one, from what I have read on other forums written buy old timers who hunt with the 45-70. They say, it is best to use the 405 grain lead or jacketed bullets moving at around 1350FPS rather than a 300 grain bullet moving at 2000FPS. It is suppose to do less damage.
Ruger made Marlin 1895GBL