I happened upon this scope mount recently. I have one of those blonde Irish Contract No.4MK2. I shoot Sierra Pro Hunter 150gr, with the iron sights and all bagged up on the bench I can get touching groups. 1/2-3/4 MOA. (AA250, N540, N140 running 2650fps @ 75F.) Now, that is all calm, warm, fed, fat & happy. I've only used the rifle for fair weather recreational iron sight shooting on steel IPSC plates to 400yds. With all that word salad, I am intrigued at the proposition of shooting my rifle scoped and then use it for coyotes and more precision shooting. Constructive criticism here, fire with the forend bagged in a butterfly sandbag, (Bulls Bag) and use a rear bag to steady the shot. Square the chest and shoulders more to the target and I bet one will see these rounds stack in the same ragged hole. Of course this is only to shoot benched and test the rifle's potential, and not the shooter.
The No.5 Mk 1 wandering Zero is caused by the lightening cuts in the reciever. The British discovered that the rifle would wander off zero like a No 4 rifle with bad headspacing and after extensive testing, they determined that the lightening cuts allowed the reciever to flex too much when fired. This caused the chamber and bolt face to not get a perfect alignment.
Did you ever experience any probleme after shooting a lot of round whit the NDT mount for the #4 I want to set a scope on mine and be accurate at 300 yards
I just got my hands on a #5 finally. I've read reports to support either conclusion but, apparently they have tested #5s from a mechanical rest and the "wandering zero" did not occur. My theory is given the poorly designed butt "pad" the shorter sight radius and the pronounced recoil, the wandering zero was not mechanical but human induced. I have a #1 MK 3 made in 1918 and she shoots as accurately as I could possibly ask for. Not bad for a 105 year old warhorse. Cheers from Canada.
