Quote Originally Posted by jmoore View Post
If you have a spare, go ahead and try it out. Don't change anything else that doesn't require it for a correct fit, and see what happens. At least you'll have some more to go on.

Other thoughts-

Have you checked your fore stock tip up-pressure at both the start and finish of the string?

Also, the nature of the stringing suggests that your dramas are either in the barrel itself, or in the front end of the rifle, not the back, as it seems heat influenced. The crack in the back would seem to me to add randomness to the situation, not a repeatable phenomenom(enomenom).

The rear sight isn't one of those sheet metal jobs, is it?
Mr. jmoore

The "rear" of the Enfield fore stock at the draws area controls vertical stringing, if the draws area is loose the fore stock can rock or pivot at the forward trigger guard screw. Meaning low or very little up pressure at the fore end tip or inconsistent up pressure at the fore end tip due to bedding shifts.

Below, up pressure is controlled and adjusted at the "rear" of the fore stock in the draws area.



On the Enfield Rifleicon a loose fore stock causes vertical stringing and a loose butt stock causes horizontal stringing.

Below, top photo, loose fitting draws area and a trigger guard bushing that is too long, bottom photo tight fitting draws area and proper length trigger guard bushing. All these areas are in the back of the fore stock or are you going to "fix" this by putting cork under the barrel at the fore end tip like someone else we know.