The M-70 push feed still has a flat bottom bridge which some folks, myself included, believe makes a better bedding platform than the round recievers like Remington and Savage bolt guns. Winchester's post 64 extractor is better than Remington's as well. It seems to me that there was a run of M-70's and 670's in the 1970's that had an issue with the bolt handles coming loose, but even if you had one of those it would be a simple fix to resolve. Because the M-70's bolt handle swept back, although ###y, some found that it banged against their knuckle of their shooting hand when the rifle recoiled. The M-70 stocks from those years were horrid, but then so were Remingtons. Ruger's M-77 was a faint light in the darkness in that their stock had cut checkering, but the quality of their wood was inconsistent.
If it was my money I'd pass on the push feed Winchester. You can buy a nice used Brno 602 or a new CZ 550 either of which can be had in .375 H&H, both or which have CRF, and either one will put change in your pocket from $1500. There is no need to compromise for something that is alright when something that is excellent is available for less money.