Rifle chambered in one of the cartridges named Winchester Magnum- such as the .300 Winchester Magnum- or .300 Win mag for short.
3500.00
Only what it is chambered for.
You need to know the make, grade and model. 270 mag rifle could be anything
300 Win Mag would be one.
No
100-450
There is no "one" better anything- including rifle calibers. The .300 Win Mag can fire a heavier bullet a longer distance, but is generally a heavier rifle, has more recoil, and you can carry less ammunition.
A Sears Model 300 Winchester Mag rifle could actually be worth several thousand dollars. A rifle in very good condition can sell for up $3,500.
100-450 or so
.22 mag and .22 LR are not the same. So, no.
30 caliber bore brush.
The question can't be answered unless you specify whether you mean centerfire or rimfire. .22 LR 30-06 375 H&H 270 win 308 win 7.62+39mm 7.62+54R 300 win mag 22 win mag 223 rem etc.