Couple things , if I may .
I wonder if the issue here isn’t just one terminology and a confusion between modern and historic reference.
not to also mention an issue of metals that are no longer avalable and thus possably wrongly assumed to be steel in the modern context ?
As I understand it . Steel was considered anything with a 2% carbon level .
But it wasn’t actually steel in the since of steel today , at least past Mild steel
wasn’t this called blister because the pig iron was then turned to wrought iron . Then the wrought had had to be carbonized to get the 2% level to make blister ?.
Most of truly controlled “steel” in the modern since , again as I understand it ,didn’t take place tell late in the 19thcentury thus well down the road for a Wheelock . Though most certainly some items like springs , and strikers and such had to be a type of iron with a high carbon level so as to be able to temper .
So now my question . If this is wrong then was also Swinney’s wrong in his findings on the subject : Gun Iron and Mild Steel by H.J. Swinney .
Which was printed in MB some years ago
Here is a link to that article from the MB archives back in 1999
http://www.muzzleblasts.com/archives/vol4no3/articles/mbo43-3.shtml