I have a model 1936 and before that a model 1896 Swede. In both cases I found that the most accurate loads were with jumped bullets, and not the long high BC ones. Having many other rifles with scopes, I have preferred to keep my Swedes as issued, except for a little minor trigger and very minor bedding work. Because of the limitations of the issue sights, I have not contemplated much long range precision shooting, and for that reason have little concern with BCs. The two most accurate bullets that I have tried have been the Sierra 100 grain hollow point, over a load of IMR 4350, and the Hornady 140 grain RN seated to the middle of the cannelure shooting surplus H4831. I have shot five shots under 3/4 with the Sierra, and the same with the Hornady. Once when doing tests while adjusting the front sight on my 38 I shot a couple of honest half inch thee shot groups with the Sierras. That was some years ago. In my experience, a lot of shooting well with open sights is believing that it can be done. If you really do not believe that it is possible, then you will not put the effort into perfecting your sight picture, and trigger pull.