Sycamore I had a classic also and agree. True the specs are larger but typically works w/o mods in many actions. That said, brass does vary among brand as above mentioned. Recall someone - perhaps Seafire who talked about the 'fit' of various brass in Swede, esp. in an M70 IIRC. Thinking that was a PF under discussion, but perhaps a 'claw' model.
If you go to the trouble of building as JB said, set up for Any/All brass as a Saami factory rifle will do, yet I'd likely run either Lapua or WW brass in handloads.
If you are struggling Bob, do this:
Pop an Aderall, grab a Ruger 77 in 6.5 Creedmoor, the sporter Hawkeye, if desired for handling and a tad less weight, feel free to have the bbl shortened to 22-24" as some came 24, some 26, but you can choose what YOU like.
Run factory 120/140 amax for paper and coyotes, and 120 GMX ammo for anything larger. The 140 amax and 129 SST load will do fine on deer but avoid shoulders or hind end shots to max penetration and minimize meat damage.
Swede Performance!!!! Headache over!!! Now go buy the rifle/ammo and shoot sub MOA and perhaps 1/2 MOA out the box if you do your part. You won't be disappointed.
Bob, your tag line is understood by many here