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And 40 ammo is not twice as much as 9 mm if it is you're buying it at the wrong placehttp://gundata.org/ballistic-calculator/
Go to the ballistic calculator and click Compare 2 bullets... compare 9mm and 40 S&W
read the history of the 10mm https://en.wikipedia.org/wiki/10mm_Auto and figure that the 40 S&W is a cut down from the 10mm. 9mm and 40 S&W the ballistics are nearly identical and 40 S&W ammo is 2x as expensive as 9mm.
Unless you get box of 50 .40 S&W for $10 and a box of 50 9mm for $5 you need to stop buying ammo from wherever it is you buy ammo.http://gundata.org/ballistic-calculator/
Go to the ballistic calculator and click Compare 2 bullets... compare 9mm and 40 S&W
read the history of the 10mm https://en.wikipedia.org/wiki/10mm_Auto and figure that the 40 S&W is a cut down from the 10mm. 9mm and 40 S&W the ballistics are nearly identical and 40 S&W ammo is 2x as expensive as 9mm.
I like 40 for the simple reason with a barrel swap your gun's a nasty 357sig
I have not heard 1 legitimate answer Regarding why the 40 is a bad choice , so it seems it is just all hype from people that have not owned or shot one ,
ok ammoseek has a current price difference of 5 cents per round for brass. https://ammoseek.com/ammo/40swAnd 40 ammo is not twice as much as 9 mm if it is you're buying it at the wrong place
I like 40 for the simple reason with a barrel swap your gun's a nasty 357sig