Most of my rifles have been pro bedded,I cant remember what medium was used but it adds to the weight of course,but then helps them to shoot better.
The little 6 pounders in 300 mag certainly will want to jump out of ones hands at the shot.

I remember freaking out at using a long barrelled HS Precision 300 WM with a monster Swaro on top in the Wicklow Mountains in Ireland.
The fukn thing weighed around 11.5 lbs from memory! My mate carried it into the zone,I shot the Sika,he carried the deer out in a deer sack (great idea) and I carried the fukn rifle back about three kilometres in some shit walking terrain.
Even though in a buoyant mood with my good shot and the whole overall experience that fukn fluted giant was fukn heavy!Way over the top for a sambar hunters bush.

I also took sika with a sister rifle in .270 Win that was a tad lighter,not much!The Irish boys,both hard tough hard walking bastards took it in their stride.

Its everyone to their own of course with their needs and having done the south island NZ fun walks Shanks style carrying several different rifles I doubt if I actually would have noticed whether my 7mm would have benefited me a pound lighter..a toothpick in that alpine terrain is too heavy.
There are some sambar hunters that carry O+U double rifles..like wtf for!
One barrel is heavy enough for me!