This has probably been done to death already, but anyway.....
Reading through my DSC1 book, I get to page thirteen (carrying the rifle); there is a photo and description of three 'accepted' methods of carrying the rifle.
I do not have a sling on my 243, and although I have one on my rimmy, I rarely use it, preferring instead to carry my rifle in what might be termed the 'military patrol stance' - a method that soldiers and ex soldiers will be very familiar with.
As this method is not mentioned, or shown, does that mean it is NOT an accepted method of carrying, even though the muzzle is always pointed at the ground, and well away from the shooters feet?
I realise that some methods of rifle use/safety etc may be perfectly acceptable in a military scenario, and completely the opposite in a civillian setting.