David,
No problem ... it's not just a local maker thing though although the incidence seems higher ... stuff ups do slip through. A local gunsmith I now use has had both local and imported barrels with bloopers ... he got that nervous that he purchased a borescope and inspects ALL barrels and slugs them prior to touching them.

Slugging the factory Ruger barrel would be worthwhile just to rule out the possibility ... but I reckon its an ammunition issue rather than rifle.

I whole-heartedly agree on the 416Taylor ... which 'smith built the BLRs? I'm ordering a 416cal blank later in February/March.

Dont know what I'll do with it yet ... but at $150 delivered ... it can sit in the cupboard.
Cheers...
Con