没有容易的办法，练枪得经常练，而且必须under stress，警察报告有很多例子两人相距10尺互射把子弹打光了啥事没有。

自己看吧：

from Plantinga "400 things cops know"

“Most bad guys can’t shoot for spit. They’re about as accurate as the stormtroopers in Star Wars. You’re thankful for this, except when they miss their intended target and hit a bystander. I once responded to a shots-fired call where six men on a front porch were shot at half a dozen times by three other men from about eight feet away. It happened so fast, the guys on the porch didn’t even have time to duck. But no one was hit. Not even a graze wound. I was at another scene where five bullets were recovered inside a living room and fourteen shell casings were found outside, which meant the shooter had aimed at a target literally the size of a house from fifty feet away and went five for fourteen. 35.7 percent accuracy. Shaq used to do better than that at the foul line. It speaks to the fact that if you don’t know what you’re doing and you rush a shot, it’s pretty easy to miss, even up close. People who haven’t handled weapons much don’t understand that. They don’t put time in at the range and tend not to practice the fundamentals of shooting such as stance, grip, sight alignment, and trigger control. Instead, they adopt a different kind of technique, one known in police circles as Spray & Pray. If the average criminal ever decided to take formal shooting lessons, this nation’s homicide rate would quintuple.”

我觉得不管练什么，如果真想有用的， 得每天练，随便挑一个大家推荐的， 但每天都得练，就算是pepper spray, 也得找堵墙每天对着喷一下。

不见得，同一本书里的例子：

Good cops practice religiously at the shooting range. They perform drills where they draw their firearm across their body and shoot it with their off hand in case their dominant hand is ever incapacitated in a gunfight. They practice chambering a round by using the heel of their boot to rack the slide. Other officers’ lack of preparedness is dismally clear. I was at a firearms training years back where a coworker fired off a full clip at a close range target of a glowering, armed thug. He missed with every bullet. He then turned towards the class and quipped, “Threw a hell of a scare into him though.”

对，买100瓶也比烧子弹便宜。

说得很好，智取为上，有暴力做后盾更好。

练枪你每次至少得打100发，按瓶子如果每天按太贵，就隔几天按一次吧。那个东西得在户外按，还得看风向，不然自己就中招了。

是为了熟悉武器，不然过两个月连pepper spray 放哪都忘了。

枪给人很多false confidence，我觉得真想练还不如练刀，每天象织毛衣一样扎100次，加上跑步，日久就可以用了。不用花钱买子弹，不用上靶场。

https://www.youtube.com/watch?v=js0haocH4-o