tag:blogger.com,1999:blog-5030145265861917845.post3922736215651101268..comments2024-03-28T14:35:30.147-04:00Comments on Tank Archives: 100 mm Tank Gun, First AttemptPeterhttp://www.blogger.com/profile/09622237223229485503noreply@blogger.comBlogger1125tag:blogger.com,1999:blog-5030145265861917845.post-17505183097171136152021-09-03T11:26:37.907-04:002021-09-03T11:26:37.907-04:00Are their "412" number relative to GAU i...Are their "412" number relative to GAU index "412" for 100mm BS-3 years later?<br />Or just a different naming method like 57mm "413"?st741963456https://www.blogger.com/profile/01778051534364038133noreply@blogger.com