The .30-06 SMLE is the British designated No 3 Mk I and I* and were the US designated M 17 or M1917 rifle and sometimes refered to as P 14s in British service. Yes, they are different creatures from the No 1 Mk III and III*.
And yes, all the WW 2 made SMLEs (except for the few No 5s made were No 4 models.

Anyway, the point I was making was not to pick nits on the model of the rifle but to highlight its caliber. If let's say 100,000 were delivered with 10,000,000 rounds of ammo that only gives 100 rounds per gun right off. Since the ammunition is not interchangable with standard British service ammunition that left the Home Guard with another problem...an ammunition shortage.

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Truth is stranger than bullshit!