No real way to tell, obviously. Unless some other folks have 1938-1941 99's with T7's and Weaver 330's? I think I saw a post where David has a 99T with them. If anybody does have pics, please post them up.
Heck, if you have a 30's 99 with T7 and 29S post up pics. We can use this thread as a reference in the future.
In 300:
[img]
http://www.savagefest.net/my_99s/1941_99EG_300/IMG_20150205_081210.jpg[/img]