We have done extensive testing with M96s, M41bs, M38 with every ammo available over the last few years. Lots of different rifles with exc. bores, crowns, trigger pull, no throat erosion, and bedded properly.
The Hirtenberger 160 grain SP from CIA is hands down the most consistant and accurate in all Swedesl we tested.
It is the ammo of choice for those that use the Swedes for hunting in our club.
Our more talented shooters can do one ragged hole at 100 yds. on a good day. To take out the human factor as much as possible, we used bench rests also.
If anyone needs serious accuracy, I would highly recomend buying a box or two to test it in your rifle. It is $16 per box, which is cheap compared to other quality ammo on the market. Lapua is very expensive, but in the ball park also.
We have never found this ammo anywhere else. Century seems to be the only source.
Only those who have tried it and had different results should respond with the B.S. routine.
Of course custom hand loads are as good. This is comercial ammo that I am refering to.
Ingman, Wolf, various Hotshot (century house brand) are not even close to Hirtenberger. Others are OK for plinking only.