However, because the scope mountings on the poorer rifle were fitted by Hollands, at the request of Pechenart, when the rifle was re barreled in the 50's, then it is this proven.......

should perhaps have said

because the rifle was rebarelled by Hollands at Pechenarts request in the 1950's, and because it is Pechenarts rifle then the provenance.....

Kuduae.....I have to admit I am no authority on mounts and scopes..