Point taken but the L8 markings are well marked on the rifles and he'd certainly have seen the markings - if they were present. I saw several L8's that had come through on a workshop refurbishment programme from Ordnance among another 20 or 30 No4's. I really don't think they knew what they'd sent down. At the same time another batch of rifles came down for cannibilisation for spares and conversion to L59 spec. At the time, thie workshops were being switched to civilianisation mode and so the time management was strictly controlled. Conversion to DP was quite labour intensive at the 'civilianised' workshops but not the REME controlled workshops so they were done there.
There's absolutely no doubt(?) that it's a bog standard rebarrel with a Belgian or Canadian7.62mm barrel.