Home Forums Hunting & Shooting Mausers and Military Rifles 6.5x55 Mauser question

I've seen the ROT for Swedish Mausers listed as being 1 turn in 200mm (7.87") and also 1 turn in 220mm (8.66").

The original barrels on my M38 Husqvarnas measure about 8.5". Maybe the M38 were made with a slower ROT because the Swedish military was shooting shorter/lighter bullets than those that they started with in the 1890's.