So, what are the best (in terms of quality and accuracy) of the surplus Mausers?
If you are really interested in the
best in terms of quality and accuracy, you have to go with the 98/29 Persian Mauser. I have several, including one that was D&T'd by the previous owner.
I use it in a vintage military rifle silhouette match in the "open" category (as issued, with scope). It usually shoots around 1 MOA or a bit better.
Recently I took the Persian to the range to check zero before the monthly match. It shot a 5-shot, .9 MOA group at 300 yards with the 200 grain Nosler Custom Comps. This is typical for the rifle. I've shot a number of 39/40's with this rifle in the match, which includes 10 rounds each at 220, 330, 420, and 550 yards.
Here is the auction pic of the Persian...(just to prove that I wasn't the one that D&T'd it

)
When it arrived, I found it to be an all matching, excellent condition, Persian Mauser with an excellent bore.. I mounted a Bushnell 10x40 Elite 3200 scope, developed a 200 gr handload for it and the "Ayatollah" has done quite well at the match.
Here is the target from my 300 yard zero session...