Did the Long Branch prototypes have the same accuracy, felt recoil, and wandering zero problems the British-made Jungle Carbines did?
No5s were not known for precision accuracy. I've owned and shot a number of them over the years and have to say that they all kept their zero. I still have a JC that I got back in the early '60s. I put a Bishop buttstock on it, scoped it and kept the original fore stock. It always kept it's zero and will shoot a 2.5 in group @ 100 yds. It is a great timber rifle and has gotten me a few truckloads of game over the yrs incl moose, bear and my best whitetail.