Nope. Is not only the Power. You need oil for the bar to.
Would do 40 but not 60.
The 395 have 95cc
The 880 have 121.6 cc (7.42 cu. in.)
Bid different on the 2 saws.
The 3120 is 118.8cc close to 880 but the manufacturing recommend only 42" Max, don't know why.....
Here is what Stihl claim for...