Hi All,
IF you are capable of putting the bullet in the correct spot at 800 yards, then the 270 Win will kill the beast just as dead as the 300 WM. Yes the 300 produces more power but it does not make the beast more dead....................after all dead is dead. I no longer have a 300 WM...................no I have nothing against the cartridge at all. The rifle was traded in a deal to get some collectable rifles, funnily enough for my collection
I still have some ammo for it including some Lapua 200 gr loaded with the MEGA bullets. Ideal Elk recipe
I have 2 rifles in 270 Win, the BSA CF2 is the first centre fire rifle I brought, the other I picked up a little while ago, calibre was unimportant. I wanted a good BSA Majestic and this one was the best deal so I got a 2nd 270 Win rifle. However I have yet to kill an animal with either of the 270's. Had Deer in the sights............ but it was an unsafe shot, or the wrong species or sex

Oh well one day it will happen. I have shot the CF2 at 600 yards and it was very accurate using a handload with 130 Gr Balistic Tip bullets and Rel 19.
Yes the 270 Win is an excellent game cartridge but as has already been stated it depends on the terrain and area it is used in. Personally I would not want it in close wood/timber, there are better cartridges suited to this work. Most hunting is a compromise. If I had a place like this, like in fact the place I hunted Wgitetails in 2003 where long shots 500+ could be taken in the fields and close dense thickets where 40 yards was a long shot then the 270 loaded with 150 gr bullets would suffice. I actually used a 7x57mm due more to it's scope moutn set up being a QD one against the fixed steel mounts on the 270 win. Sighted in for 200 yards and the longest shot I took was 65 yards