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Re: 147 grain - a better 9mm cartridge?
Posted: Mon Dec 31, 2012 11:21 am
by Dave2
nitrogen wrote:If anyone ever doubts the power of self defense 9mm rounds (I personaly use 124gr +P or +P+) I ask them if they want to go downrange and hold my targets while I practice.
In physics, you learn that kinetic energy = mass times velocity squared (when we're going signigicantly slower than c) so personally, i'll go for the lighter round that moves faster.
It's (1/2)m*v^2. Momentum is m*v
Re: 147 grain - a better 9mm cartridge?
Posted: Mon Dec 31, 2012 12:40 pm
by JALLEN
Dave2 wrote:
It's (1/2)m*v^2. Momentum is m*v
Yes, but m is in kilograms, v is in meters and the answer comes out furlongs per fortnight or something like that.
I'd prefer a formula that takes the gun goes bang, and gives the odds the perp falls dead, and how long it takes!
Re: 147 grain - a better 9mm cartridge?
Posted: Mon Dec 31, 2012 12:59 pm
by G26ster
JALLEN wrote:Dave2 wrote:
It's (1/2)m*v^2. Momentum is m*v
Yes, but m is in kilograms, v is in meters and the answer comes out furlongs per fortnight or something like that.
I'd prefer a formula that takes the gun goes bang, and gives the odds the perp falls dead, and how long it takes!
You'll never get that answer. Too many long time veterans of the "Great Caliber Wars" out there
BTW, I enjoy your posts Sir, so please accelerate your move to Texas, if at all possible

Re: 147 grain - a better 9mm cartridge?
Posted: Mon Dec 31, 2012 1:32 pm
by JALLEN
G26ster wrote:JALLEN wrote:Dave2 wrote:
It's (1/2)m*v^2. Momentum is m*v
Yes, but m is in kilograms, v is in meters and the answer comes out furlongs per fortnight or something like that.
I'd prefer a formula that takes the gun goes bang, and gives the odds the perp falls dead, and how long it takes!
You'll never get that answer. Too many long time veterans of the "Great Caliber Wars" out there
BTW, I enjoy your posts Sir, so please accelerate your move to Texas, if at all possible

That is very kind of you to say.
All you have to do to hasten my move is find somebody with a lot of money to buy my house, and I'm outa here!
Coronado is exceedingly pleasant, and our house is on a channel to the bay, with a dock in the back that handles 2 <62' boats. The ocean and beach are mere steps away. Full disclosure: We did have 2-3 minutes of hail yesterday at the end of the Chargers game, very unusual. The ice here stays in the glass.
Bring money!
Re: 147 grain - a better 9mm cartridge?
Posted: Sat Jan 12, 2013 4:56 pm
by longdog
J. Allen,
I'll echo that. Hope you can return to Texas soon. A couple of years ago, on another forum, I told you I planned to retire to the Wimberley area. I did and don't regret it except that I don't have access to a range within reasonable driving distance. I was spoiled by PSC outside of Alvin, Tx. A group inDripping Springs is in the process of putting together an NRA range and I hope that happens soon.
Incidentally, my next door neighbor just moved here from Catalina, up the coast from you and has quickly adapted. He choose to move here when he retired and has no regrets.
Hope to see you i the area soon.
Re: 147 grain - a better 9mm cartridge?
Posted: Sat Jan 12, 2013 9:25 pm
by JALLEN
longdog wrote:
Hope to see you i the area soon.
Same to you, buddy!
If you are there in the hill country, enjoy the Gemütlichkeit, but try not to get any on ya!
