Some interesting thoughts and observations on this thread so far. Contrary to a few comments berating second-hand rifles, all of mine are second-hand blued steel/wood and have turned out great. My brother has also bought a number of second-hand rifles, including a Varberger on this forum recently. He’s pleased with them all.
Like previously mentioned I think brand, model and calibre are important aspects to take into consideration when buying second-hand. Generally, I’ve found more expensive brands and their respective models (e.g., Mauser 66, Heym SR20, Varberger 757 etc.) will more than likely not have been bought by professional stalkers, or gamekeepers and alike. Similar concept for less mainstream calibres such as the 7x57. 22 centerfires is a different ball game though!
The last second-hand rifle with an unknown round-count I bought was a Heym SR20 in .243 Win. It's blued steel, iron sights, unthreaded and topped with a Swarovski Habicht. All for just under £400. At this price I thought it was worth the trip to view it in person.
Upon first seeing the rifle my father and I both came to the same conclusion; given its age (1987), likely cost at the time of initial purchase, and the glass sat on it, this was probably an older gent’s regular stalking rifle, and not a ‘foxing’ setup. Sure, it had seen some use. The stock was scratched and dinged, the lacquer/varnish finish partially rubbed off, the bluing on the bolt handle and end of the barrel was worn. The scope was in similar condition. However, all that cosmetic wear would be expected for a 30+ year old stalking rifle.
The action though still felt smooth with nothing untoward, the bore was free from pitting, the trigger crisp, no rust was present on the rifle, jewelling on the bolt still clear, and the glass unscratched. The reputable RFD had also tested the rifle and said it was “very accurate” and easily produced sub-inch groups for them. The rifle also came with their 3 months warranty for extra piece of mind. The deal was done.
Shortly after getting the rifle, I confirmed that it grouped within an inch for factory lead bullets, and then trailed the 80gr Fox factory ammunition from Edinburgh Rifles. After the first group of the latter I was pleasantly surprised – a cat’s hair under half an inch at 100 m. Not bad for an old rifle, and good enough even for the snipers on the forum! That degree of precision is perfectly adequate for most stalking needs within 200 yards. Over time all I’ve done is remove the old finish, steamed out scratches/dents, and re-applied the oil finish.
From my experience there is a lot of value to be found in the second-hand market, but as previously mentioned, you should do your research. If possible, always go view and try the rifle for yourself. Many of these older rifles were built to a standard first, then a price. The days before bean counters ruled the roost.
it's like when you read on guntrader 'borescoped by us'... 
sometimes it even says, borescoped by us and found to be as expected 
