My rifle is pretty heavy with a light Palma 9 twist Bartlein plus a brake. Recoil is pretty much nonexistent even shooting the heaviest bullet available. I think the A3-5 will be awesome when it's here. The plastic factory stock sucks but it still shoots well in it. I'll know more when it's totally the way I want it.
My Mashburn is just a M700 on a HTG with a No3 Chanlynn. Not a flyweight by any means but not as heavy as yours. Mine is a 1-10 twisted. I run the 168g Berger Classic with H1000. Dang thing almost shoots with my bench guns. I get a kick out of you running 195s in the MSM. dave