This is not the first time I’ve seen a supposedly inaccurate 20th century rifle turn in very good groups when fed modern ammo.
Check it out:
Recently, Dave Hurteau and a number of other Field & Stream editors got together for a rifle-testing project so bold in its conception and so startling in its conclusions that the world of the spiral tube will never be the same.
In the course of this event, Hurteau showed up with a Winchester Model 100 carbine, a true inanimate hideosity that was not part of the test, but which Hurteau had just purchased and wanted to try out.
The Model 100 is easily the best-looking semi-auto sporter ever made but, from my recollection, one of the most inaccurate. This stems from its detestable trigger, and from the fact that so much wood is hogged out of the stock that it’s impossible to get any kind of satisfactory bedding arrangement. The rifle was produced from 1961 when Winchester was going into the sh***er to 1973 when Winchester was well and truly in the sh***er. Roughly a quarter-million were made, and there were problems. Some 100s jammed. A lot. Some were OK. The stock was finished in what appears to be lacquer, which flaked over time. Some 100s would fire with the bolt not fully closed, and in 1990 Winchester issued a recall, which was nice of them. The standard rifle had a 22-inch barrel and the carbine had a 19-incher, clamped to the fore-end with a barrel band, which made it even more inaccurate.