This TFB TV video provides an expert-level ballistic gel test of Federal 147gr HST 9mm ammunition, specifically evaluating its performance from short-barreled concealed carry pistols. The test highlights the challenges heavy bullet weights face in achieving optimal expansion from shorter barrels, especially when passing through heavy clothing. The instructor emphasizes that while the ammunition meets FBI penetration standards, its expansion can be inconsistent under these conditions, suggesting it's better suited for service pistols than micro-compacts.
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