hi there, a differen type of HT low mount and history??

[Surpmil]

....The vast majority of the rifles were converted from WW1 manufactured rifles. The reason was that they "flexed better due to superior metalurgy". Also the machining tolerences in the actions were tighter originally making them easier to work into an individually fitted and finished unit for accuracy.....

This is rather surprising to say the least. Were Lithgow actions built in peacetime not in all respects superior to anything made during WWI? That defies logic.