I been pondering that too about the barrel length and i hoped that someone would respond with some knowledge they wanted to share, thanks.
The 1900 obie swede i'm getting is cut down to 22" already and i been thinking of leaving it that way and just finishing the stock so its as close to orginal looking. The swede m38 husqvarna barreled action i may put in a 38 stock that i have sitting here. I just ordered another barreled receiver from sportsmansguide its a '95 chilean dated 1898 in 7mm mauser. I'm not sure about that one yet. I also have a complete swede m94 stock set with metal on the way too, these are as rare as hens teeth if we can find one, i found a guy and got two from him. I did turn one sporter m94 back to its orginal condition, last year. They have an orginal 17" barrel. I would really like to have a south american m94 in 7mm mauser but i'll make my own stock for it, so i just need some metal parts. On the other hand my russian saiga's with there 16" barrels are really accurate in 223 and in 308win.
In the future i don't want to send my grandson in the woods with an orginal swede m94. I'd rather give him a build to use thats my point. Plus i can shoot them too at the range and to play with too.
Some of these short south american mausers are priced in the thousands of dollars. I really don't want to go in the woods with those.