I have a "thing" for marlin 1895's, 1894's, 336's, and Winchester levers. Some love the Leverevolution ammo, some are neutral, and some will give you 12" groups at 100 yards. From my experience, the Winchesters are the most negative, but most of my Marlins are good with the new ammo.
My .450 GG with the ported barrel will cloverleaf 3 rounds at 100 off the bench. Forget a 4th or 5th shot until the barrel cools.
My .444 with the 22" barrel will do the same.
My 45/70 ported GG, and .444P 18" will give 2" groups for 3 shots.
My 336 30.30 trapper (16.5" barrel) will cloverleaf cheap Federal 150 and 180 grain rounds, but only 3" with the Leverevolution. My other 336 prefers the Leverevolution, and shoots better with it.
ONE MAJOR COMPLAINT THAT I HAVE IS THE EFFECT IT HAS ON GAME AT SHORTER RANGES. With a RNFP in .450, 45/70 or .444, every deer or moose shot with it has fallen over on the spot. Ranges from 10 feet to 150 yards away. With the LR, every animal under 100 yards has run before falling over. The LR ammo has such a higher velocity, and with the pointed bullet the energy transfer is not as good at shorter ranges. In fact, one doe that I shot through the heart at 85 yards had her intestines sucked through the diaphram and out the exit wound in her chest. She then ran over 100 yards and gutted herself as she stepped on her own inards.
I have always liked big bore as it typically drops animals on the spot - and NO, with a properly placed shot I have no more meat damage than with a smaller calibre bullet. BUT, from my experience the LR behaves much more like a spitzer magnum bullet at the closer ranges (unless you go for a head or neck shot).