I've only one 300 RUM, a M700 LSS.
The recoil is fast, but not overly heavy, IMO.
I love what can do with a 200gr partition or accubond at 3200fps.

I wouldn't mind trying one of the heavier, sleeker projectiles at some point, either.

"For joy of knowing what may not be known we take the golden road to Samarkand."
James Elroy Flecker