Looking for feedback on this. I have a new 45/70 1895 and 336w 30-30. I heard that the Hornady Leverevolution was the cats meow for lever guns, so got 200 rds for each. The 45/70 loves this stuff 10 shots at 100yds shoots the 1" bull right out, wish I could find the magic combination on my reloads, getting close but not there yet, talked to Hornady and they won't say what powder they use other than it is not Leverevolution that is specifically formulated for the 30-30 and maybe another caliber can't recall now. Alas to my issue with the 30-30 and micro goove barrel. I can not get the Hornady Leverevolution to stay on the paper let alone group. Thought it was the scope twice, on 3rd new and different brand of scope. Got some rem, win, federal in 150 and 170's to run tests on them all, each gun is unique, it is not the scope as the other brands I can get groups with and keep on the paper at 100. I did find that this gun seems to like the 170's best. The Federal factory 170's gave me the best group at 1 1/4 -1 1/2" at 100yd. Factory 150's came second. I then started load developement. Again 170's came in with the best groups, got a 170 load with 1" grps worked out so that's a keeper. On to the FTX 160 with the Leverevolution powder. I started mid range and worked up, loads where as dismal as factory, started working down. I finally got a decent grp 1 1/2-1 3/4" at the very least listed powder charge. Now that load is hitting 9" below factory Federal 170's and 8" below my 170 developed load. This is my theory. The boat tail ftx bullet with less bearing surface than the 170 coupled with the micro groove barrel with the lands not as high as a standard rifled barrel will not stabalize the ftx bullet at the higher velocities. (That may also be why the 170 factory beat out the 150 factory as the 150 probably has less bearing surface and is certainly going faster). Any one out there finding similar results, or experience. I have seen utube videos of 30-30 shooting the horn lvr ftx ammo out to 300yds however they where not using Marlins. Safety Note: I found that the Hornaday Leverevolution was giving primer flow and some extractions where very very hard, indicating that the loads are too hot. I found this also to be true with other Calibers and Hornady Superformance Ammo that I have used.