This question comes up a lot, what does ASL mean? 
 American Semi Longbow
OrionNov 19, 2020That's what it means. Howard Hill coined the term. Writes about it in Hunting the Hard Way, page 91 in my paperback edition.
That is my impression
That's what it means. Howard Hill coined the term. Writes about it in Hunting the Hard Way, page 91 in my paperback edition.