文章基本信息

标题：Trajectory tag
作者：Johnson, Norman E
期刊名称：Sports Afield
印刷版ISSN：0038-8149
出版年度：1998
卷号：Apr 1998
出版社：Sports Afield, Inc.

Trajectory tag

Johnson, Norman E

It's all on the cards

To make memorizing the trajectory for a number of rifles and cartridges easier, inscribe or type them on a small card and wear it around your neck like a dog tag. You'll be able to refer to the tag until you've learned the trajectories by heart.-Norman E. Johnson.