I owned a No5 Mk1 for a while. It was a 1945 Fazakerly. At the time, I was able to buy British surplus cordite loaded .303 ammo.
No wandering zero at all, and I was firing pretty tight 100 yard groups offhand.
Of the guns I have owned and foolishly sold, that jungle carbine is one of my regrets...wish I had kept it.
I consider it one of the best combat bolt actions ever.
Still waiting for my Flashback...I would like it now, please.