I have a remington 700 6mm in good condition and my dads friend is finishing a remington 700 collection and wants the rifle.

He wants to trade a .308 weatherby for it (dad says its in great shape with nice nikon scope)

I hunt hardwood forests for deer and coyotes.

Good deal or should I hold out?

I'd hold out though the weatherby is a nice rifle. I used to use a .243 same bullet as the 6mm rem.

I just don't believe in getting rid of guns but I do trade like your saying though like I just traded a first gen savage 11 204 that had been used and abused for a brand new savage axis in 22-250. I traded the 243 mentioned above for the savage 11 204.

I'd keep the 6mm. One of the all time great cartridges. The shoulder is sharper than the .243, which allows for more complete powder burn in the case. And the neck is longer which facilitates reloading. Great long range (300 - 400 yrds.) chuck rifle. In the Remington 700, this combination is hard to beat.

Im keeping the 6mm.  Thanks for thoughts.

I bought my first Remington 6mm in 1969, a model 788.  I have since done two model 700's in 6mm.  I have over 30 long guns, rifles and shotguns, and don't even own a 308. 

So, just in case you can't figure it out, I wouldn't even trade my old 788, 6mm for his 308. 

I own three 6mms. I think they're an excellent caliber for deer, groundhogs and coyotes and are just plain accurate. I have never gotten rid of a firearm that I didn't regret at some time in the future...............well, maybe just one.