Quote Originally Posted by Alan de Enfield View Post
You are wasting your time looking at the muzzle - it is the 1st 3" of the barrel where all 'the action' takes place - read the first paragraphs that I quoted in Post #3. A rifle that has fired cordite will be worn at the chamber end and due to the way that Nitrocelulose works the bullet will not have suffcient 'kick up the bum' to upset into the rifling.

What makes it 10x worse is the fact you have the war-time expedient 2 groove barrel.

The only way you will get any sort of accuracy is either to use the correct MKVII (not MKVIIZ) ammunition, or home-load a full-power, open ended, parallel sided 174g bullet
Yes, will check the throat on this one.

I read the 5 groove barrels are more forgiving.