70 gr Berger VLDs shoot very well in my 1 in 9" Kimber Montana 22" barrel...better than Hornady 53 gr V-max.
I'd shoot the heavies if and when possible. My suggestion for that bullet was to the guys running the 55's and 60's thinking they are doing themselves any favors when they aren't. The 53 has a better bc, even though it is lighter. Then again, there are guys that have a hard time getting any bullet to shoot well. There's that.. Saw that today in competition...