A co-worker has both a 7.7mm Type 99 and a 6.5mm Type 38 that his father brought back from WWII. I have a Type 99 and reload for both my co-worker and myself. My friend is more accurate with his 7.7mm Type 99 than the 6.5mm, although the recoil is nicer.
A would echo the it probably depends on the rifle, his is stock military issue, no floating of barrel, no modest tricking out, just a plane piece of history that should stay that way.
My Type 99 was purchased at a gun show and Bubba owned it first, it has a bent bolt, shortened barrel, special williams type sights, and a sporter stock. It is glass beded and as accurate as a nice commercial rifle. I has no scope mounts, but it does have a nice full mum that is still there.
Get yourself a 6.5mm and see if it shoots well. If it doesn't sell and get a different one, until you find one that shoots well.
Good luck