Is there an ideal number of grooves in a rifle barrel? What difference do different numbers of grooves make? - Quora
![Amazon.com: Marlin Micro-Groove Rifles Which Rifle Barrel Has Micro-Groove Rifling? The Marlin Golden 39-A America's Finest .22 Lever Action Repeater 1959 Vintage Antique Advertisement : Sports & Outdoors Amazon.com: Marlin Micro-Groove Rifles Which Rifle Barrel Has Micro-Groove Rifling? The Marlin Golden 39-A America's Finest .22 Lever Action Repeater 1959 Vintage Antique Advertisement : Sports & Outdoors](https://m.media-amazon.com/images/I/51EqdAtkGZL._SR600%2C315_PIWhiteStrip%2CBottomLeft%2C0%2C35_SCLZZZZZZZ_FMpng_BG255%2C255%2C255.jpg)
Amazon.com: Marlin Micro-Groove Rifles Which Rifle Barrel Has Micro-Groove Rifling? The Marlin Golden 39-A America's Finest .22 Lever Action Repeater 1959 Vintage Antique Advertisement : Sports & Outdoors
Did the Micro-Groove barrels on old Marlin rifles actually do anything? Or was it a marketing gimmick? - Quora
Firearms Info from Various Websites (Hard copy) Rifling consists of grooves cut or formed in a spiral nature, lengthwise down th
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