@Hogpatrol I suggest, firstly: that you adhere to the common standards of courtesy that are observed on this forum; and, secondly: do some research.
Service rifles do count, in my opinion, because there are plenty of sporterised and original Swedish M94 carbines and M96/38 military rifles in hunting and target use.
The 1-8.66 twist rate was used by BSA in their 6.5x55 rifles, it is used by CZUB who supply barrels to other gunmakers and by Voere. USRAC used 1-8.66” barrels for their 6.5x55 Featherweight Model 70 rifles. It was printed on the factory swing-tag.
You should also be honest in what you are talking about. I always endeavour to be and ... yes, I make the occasional slip when posting whilst tired. You are talking, in your intemperate post (reply #28) about twist rates for VLD bullets (but do not elect to make that clear), Such bullets are, and in all probability will remain, a specialised, as opposed to common, type of projectile for hunting with 6.5x55SE rifles. Yes, 1-8 is a very good choice for target rifle and other long range shooting with VLD bullets BUT be honest about the context that you are referring to and do not try to bully me or anyone else. I do not bow down to libellous language nor I am afraid of tackling abusive language and/or behaviour.
The 1-10’ twist rate obviously worked perfectly well for hunters in Scandinavian forests, because, not only did Sako use it for their two-lug hunting rifles; Norma also used it in the Norma rifles that they sold in the late 1980s. Norma needed a way to keep their gunsmiths busy in the off-season and taking in outside repair work was not sufficient, so ... they sporterised some Swedish military actions, fitted them with Schultz and Larsen 1-10’ twist barrels and fitted them in sporterised stocks. All those rifles have jewelled bolts and the stocks carry medallions with the Norma logo. They were beautiful stalking (NOT TARGET) rifles and I wish that I had had the spare cash to buy one when the then Norma agent imported some to New Zealand.
State your context clearly, be courteous in your language and I will be happy to debate with you. Have a good week.