Will STI 2011® magazines hold any ammunition loaded longer than SAAMI spec of a specific caliber? Rachel Zorn September 18, 2017 16:07 Updated Follow Yes, but the .38 Super and 10mm versions will not accept ammo longer than 1.250″. Related articles What sight cuts and heights does STI use? What is STI's front sight blade width? What can I expect the trigger pull weight to be on an STI handgun? What is the recoil spring weight in my gun? How do I take my STI firearm apart and reassemble? Comments 0 comments Please sign in to leave a comment.