I concede to the British "Oiled ctg" Woolwich testing of breech thrust, which was done in a controlled (fairly) environment, but it does nothing to test the barrel & chamber.

Considering that testing the action was the primary goal, perhaps it's just fine - however the question of loads and what load was used is also important in the equation. One man's maximum load is sometimes not equal to what a maximum load actually is - not suggesting Bramble loads lightly - but - perhaps it's all relevent, perhaps not.

I'm not sure I'd want my actions submitted to 'over 30%' more pressure than they will ever experience - in reality, my improved ctg. actions experience very little pressure - virtually. Does this 'stree' the action for future failure? If oiling a tapered round produces the same pressure increase as oiling an improved ctg. then the increase in pressure against my actions would probably be over 100% of normal - something they will never experience and have no need to.

I guess it works for them, the actions of the DR's being the weakest part of the gun.