I got hold of a ex BSA gunsmith to get soom parts & ended up with express sights , dustcovers & a BSA sporter wreck or at least the barrel of one on a action .
He told me how to lead lap the bore & in his day they forced a hardened steel ball bearing down the bore to square up the rifling (I think that was it) .
Well I took the old girl home whacked a bolt in it her (Oh, spent 2 hours getting most of the rust out of the barrel frist) & shot a 3 shot group (patten) , group 1 , you can see , not too good tumbling all over the place , well I had some Norma 196Gr "318" diam 8mm slugs that I had gotten for my worn 303 Cape Gun , I loaded up 3 & shot them out of her , this is group 2 , to say I was surprised would be a understatment , this is at 25yds by the way .

Well now bugger me I have another bloody BSA to rebuild , I think I have 6 actions and bits , ever time I get some parts for one I end up getting another wounded one to revive LoL !