I would like to conduct a survey as to which .300magnum chambering AR folk would be most likely to buy if a used rig came on the market.Lets assume your looking for a used .300magnum and a rifle with an action /barrel/stock you like came on the market, which chambering would you most prefer it to be in?300H*H308 Norma magnum300 Winchester magnum300 Weatherby magnum300 WSM/SAUM300 RUM300 Wilcat of choice300 Lazeroni long/short, 300 Dakota

The 300 win is such a good cartridge.
The others are good too !
but I Can't see me shooting far enough to need anything bigger , and while the short mag works well enough , I just don't like anything that is so damn hyped when it reall does nothin new.
Argued about this with a guy trying to sell me a rifle the other day , swears up and down the 300 WSM is much better than the 300 win.
I said If I point a 300 win mag at an animals front shoulder crease and pull the trigger, tell me how the 300 wsm will do better.
he tells me about a more efficiant powder collom a little less powder a little shorter action , I said great if you are trying to win a match, I,m a hunter. I,ll take the better heavy bullet performance.
...tj3006

In an ORIGINAL chambering, it would have to be the .300 H & H or the .308 Norma due to their relative scarcity and/or history. However, a custom-built rifle (non-original chambering) in either caliber would likely be a much slower sell than something more common like .300 Winchester Magnum.

Good or bad, a wildcat is a very slow mover on the open market and can be expected to sell at a discount.

The poll says it all. Tried quite a few and guess what i just bought the other day? Yep a used 300 win mag(again) in a Browning a-bolt .Was a little surprised by the 300 H&H showing that good

You left out the best with the 30/378 Weatherby.

The 300 Winchester hands down of the ones you list.