Rob, the finish on the tip of the stock is much different from the rest of the stock. In fact it doesn't look like it received any coating (linseed oil, etc.) unlike the rest of the stock. The "fatso" features of the stock had been professionally removed (if we didn't knew the stock originally was different, we probably wouldn't notice this) and refinished and is homogeneous with the rest of the stock - completely opposite of below the bayonet lug, where it looks like a shortening was started by Bubba and not finished yet. Wood chips are missing and it looks like someone cut it in shape with a knife, just allowing the bayonet lug to be mounted over the stock.
Sorry for the confusion with the magazine. I also properly identified it as being a SMLE magazine. I misunderstood your answer. And we both came to the same conclusion, that this would date the rifle prior to No. 4 rifle. I might read it wrong, but does anyone else also read the date on the barrel as '27 ... or is it just a badly stamped '17?
Does anyone have information upon the Ainley rifle and the scope? Is the scope for the Ainley rifle exactly the same as on the No. 3 T rifle (except for being calibrated for a different round), and does this also apply to the scope mount?
If the Patt'18 scope also had been used on this rifle, why would it have such a long cutout on the rear handguard? Wouldn't this rather indicate a scope with a large objective lense? Which scopes were used from 20s to the 30s in the UK?
To the pictures of the scope "base" on the rear: they were made with additional light which has a different white color than the one I have in my light box. Therefore it shows what I'd call non-existing miscolorations. This is something I forgot to mention.
I'm not sure if the rear foot itself was fully circular (could have had a flat side at the rear also) and if the circular hole is only a result of being easier to mill, or if it had a flat backside. Being circular, all it would need were some v notches on the bottom and it would be possible to lock it in various positions, so making it more independent from the dovetail in the front. I think that this rear foot most probably would have looked like the front foot of a WWI German "Semi-Turret" called scope mount. I might try and see if in fact this one would fit, who knows?
Regarding the front base: I do not believe the front base was damaged, but I agree that it might look differently in the pictures. The top is completely flat, as are the sides of the bases. I in fact believe the juvenescent dovetail was a feature, as it was known from US WWI Neidner modified Winchester scopes, which used recoil to lock themselves. And the Neidner scope rings don't feature more "flesh" around the necks than this scope base. The force is anyway held at the back with a really massive base, while the front only serves to lock it in position. And for this the dovetail as it's now is perfect.
It might have been possible that they used the original rear sight holes for a small "emergency peep sight", similar to the later fixed rear sight on the No. 4 (where you're only able to flip it between two positions), or they simply had an original P.14 rear sight cut down, so that only the peep sight is left in place.