I have a barrel band drilled the same as the spiegel serial number 357431
You could possibly letter that rifle. It is believed ~371xxx is the low cutoff for the gap in the ledger. Mine is 377xxx so I haven't tried. (yet)
My 99R in 250 with the holes is 369,5xx. Been meaning to letter it..
“The Savage 99 Pocket Reference”. All models and variations of 1895’s, 1899’s and 99’s covered. Also dates, checkering, engraving.. Find at www.savagelevers.com