Re: If you had to lug around one rifle for distances..
Im going to have to go with something tired and true, something I know is going to go "BOOM" when it needs to and stop whatever it may need too. While I like my 16" AR, I wouldn't want to or have the resources to keep it as clean as it should be, or deal with a swelled round (jam), dirty round (Jam), bent mag (Jam),........I think you can see where this is going....... Now as for my M700 sps Varmint in 308, I like the cartridge, accuracy outstanding, weight though a little ruff, and sorry but as dependable it may be, most were not built to with stand survival conditions, meaning I need to use this as a walking stick/support for my body weight at some point, or I may need to get out of this situation in a hurry and rifle care is second to surviving this, what ever it may be. So my choice would be my trust Yugo Mauser M48 and heres why......
Iron sites - never fog, always on call, mostly never shift zero, hooded front site, adjustable to 1000 meters
Accuracy - Fully guarded barrel, nothing getting between it and stock and shifting zero, good to around 200yrds (realistically), thick barrel can take good abuse and never move, thick as well weather has very little change in zero because of all around design stock and barrel are practically one all the time
*Dependability* - no little parts in/on bolt to wear out and not eject, rounds dont have to be precisely place for everything to function the way it should just slam the bolt fwd and do the deed, enough play in parts to allow for freedom of movement in soiled conditions, Ammo can take some good abuse and still be ready to roll, stock well constructed w/ steel but plate for "WHAKEN" stuff, trigger assy beefy as well as safe, safety as well,
Others - No mags but the weapon can be loaded w/stripper clips making quick reloads, good all around round, built in cleaning rod so you dont have to carry it somewhere else, short carbine size, weights not bad but not too good, dependable sling attachment, cleaning and take down are a snap as well as not a necessity all the time
Just my opinions I think in a real "survival" condition I wouldnt take anything lesser