Rock-throwing prompts border shooting
#61
Join Date: Dec 2010
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The site Firebug linked to does a comparison of a 1 pound rock thrown at point blank range to a pistol. Now details are emerging that an AR15 rifle was used, and we know the location of the incident and can estimate distances based on where the legal midpoint of the river was and where the victim was when he was shot. So, here are my numbers (with open invitation to better them by my superiors in terms of physics)
With an AR15:
velocity =
3200 feet per second if they used standard M193 ball military grade ammo or 3000 feet per second if using SS109 (M855 ball) combat grade
the ss109 will penetrate 10 gauge steel plate up to 623 yards distance, the 193 ball will do the same up to 400 yards.
Typical accuracy of AR15 rifles with either types of ammo is about 1MOA, which means a competent shooter can put bullets within a 1-inch circle of aimpoint at 100 yards. at 100 yards, the kinetic energy of the ss109 is 1430 foot pounds (enough energy to move a 1430 pound object one foot)
If the CBP were on the US side of the river, as legally required, they are probably at least 105 feet from the spot where Guillermo Arvalo Pedroza was shot, at the water's edge on the mexican side. At that distance, we can safely rule out a 1 pound rock that Firebug's linked site used. We're talking at most a 5 oz baseball weight (sized smaller than a baseball) rock.
Let's suppose Guillermo Arvalo Pedroza were as accurate and strong in his arm as Roger Clemons at his steroid-pumped best. He's throwing 142 feet per second at 65 feet, which carries a kinetic energy of 0.35 foot pounds (if I'm doing this correctly), and both speed and kinetic energy will be dropping rapidly, probably by 30%-40% at 105 feet. Estimating MOA is 3 inches at 65 feet, 12 inches at 105 feet.
So, if the rock thrower were lucky enough to even hit the CBP at this distance, the KE is probably 0.20 foot pounds.
Baseball hitters are routinely hit by pitches at 97 mph and survive with permanent injuries being vary rare. The CBP agents were being pelted by rocks at 62 mph at most, at these distances, IF Roger Clemons were throwing. Most likely, the speed developed by these rummies on the mexican side was half that, say 31 mph.
Still say lethal force was justified, and rocks were comparable to what the agents used?
With an AR15:
velocity =
3200 feet per second if they used standard M193 ball military grade ammo or 3000 feet per second if using SS109 (M855 ball) combat grade
the ss109 will penetrate 10 gauge steel plate up to 623 yards distance, the 193 ball will do the same up to 400 yards.
Typical accuracy of AR15 rifles with either types of ammo is about 1MOA, which means a competent shooter can put bullets within a 1-inch circle of aimpoint at 100 yards. at 100 yards, the kinetic energy of the ss109 is 1430 foot pounds (enough energy to move a 1430 pound object one foot)
If the CBP were on the US side of the river, as legally required, they are probably at least 105 feet from the spot where Guillermo Arvalo Pedroza was shot, at the water's edge on the mexican side. At that distance, we can safely rule out a 1 pound rock that Firebug's linked site used. We're talking at most a 5 oz baseball weight (sized smaller than a baseball) rock.
Let's suppose Guillermo Arvalo Pedroza were as accurate and strong in his arm as Roger Clemons at his steroid-pumped best. He's throwing 142 feet per second at 65 feet, which carries a kinetic energy of 0.35 foot pounds (if I'm doing this correctly), and both speed and kinetic energy will be dropping rapidly, probably by 30%-40% at 105 feet. Estimating MOA is 3 inches at 65 feet, 12 inches at 105 feet.
So, if the rock thrower were lucky enough to even hit the CBP at this distance, the KE is probably 0.20 foot pounds.
Baseball hitters are routinely hit by pitches at 97 mph and survive with permanent injuries being vary rare. The CBP agents were being pelted by rocks at 62 mph at most, at these distances, IF Roger Clemons were throwing. Most likely, the speed developed by these rummies on the mexican side was half that, say 31 mph.
Still say lethal force was justified, and rocks were comparable to what the agents used?
#62
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Just my 2 cents - the CBP has no right whatsoever to fire into Mexican (or Canadian, for that matter) territory. They just commited armed aggression an other country.
If they felt threatened, they just had to move 50 yards away.
If they felt threatened, they just had to move 50 yards away.
Last edited by WilcoRoger; Sep 17, 2012 at 5:14 am
#63
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Thank you. My point exactly. Doesn't take a rocket scientist to understand that.
#64
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#65
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Shooting *BACK* isn't armed aggression against another country. The rock throwers are another matter, though.
#66
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don't agree. since the time of David and Goliath, it has been noteworthy and rare for the rock thrower to kill his opponent. use of shields protects against rocks. being hit with a rock *may* result in damage, more rarely result in heavy/lasting damage, and even more rarely, death. being hit with a bullet WILL result in damage, very likely heavy/lasting damage or death. The rock thrower being gunned down is a guaranteed loser in PR terms. Ask the Israelis.
Rocking throwing is the preferred method of execution in many countries.
Rare? Ridiculous.
The rock throwers got what they deserved.
#67
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Was the person killed one of the rock throwers, or was the person killed a bystander?
#68
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True, but we need our border patrol to be smarter than large prey animals.
Good point, but the condemned would probably always survive if the executioners put them on a powerboat in the middle of the river and then started throwing rocks.
Was the person killed one of the rock throwers, or was the person killed a bystander?
Good point, but the condemned would probably always survive if the executioners put them on a powerboat in the middle of the river and then started throwing rocks.
Was the person killed one of the rock throwers, or was the person killed a bystander?
As for the condemned always surviving, how about this? You sign a waiver and you put yourself in a powerboat in a river and promise not to return fire while I throw rocks at you. Rocks are a near infinite supply. What outcome will it be for you? I hope you have life insurance.
If the person killed was an innocent bystander, then he should have ran in direction that was away from both the rock throwers and the CBP.
#69
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As for the condemned always surviving, how about this? You sign a waiver and you put yourself in a powerboat in a river and promise not to return fire while I throw rocks at you. Rocks are a near infinite supply. What outcome will it be for you? I hope you have life insurance.
How about this: if there was a real need for a boat to be in a location where the agents on board are in fear for their lives due to being pelted by rocks then simply install transparent shields on the boat. This way the agents won't get injured and the rock throwers have nothing to gain by their actions.
If the person killed was an innocent bystander, then he should have ran in direction that was away from both the rock throwers and the CBP.
Castle doctrine states that there is no duty to retreat when attacked in ones home and instead the victim has a right to deadly force on the attacker. The CBP has no duty to retreat when patrolling the border.
Last edited by OttawaMark; Sep 17, 2012 at 7:02 pm
#70
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So, what would your reaction have been had the innocent bystanders returned fire on the CBP agents and killed them all outright as soon as they fired on the Mexican shore?
#71
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Humans have been killing each other and animals with rocks for hundreds of thousands of years. You don't become the apex predator while being physically puny compared to many the predators and prey unless you master the rock.
Rocking throwing is the preferred method of execution in many countries.
Rare? Ridiculous.
Castle doctrine states that there is no duty to retreat when attacked in ones home and instead the victim has a right to deadly force on the attacker. The CBP has no duty to retreat when patrolling the border.
The rock throwers got what they deserved.
Rocking throwing is the preferred method of execution in many countries.
Rare? Ridiculous.
Castle doctrine states that there is no duty to retreat when attacked in ones home and instead the victim has a right to deadly force on the attacker. The CBP has no duty to retreat when patrolling the border.
The rock throwers got what they deserved.
Bolding mine.
A person who throws a rock deserves to get shot and killed???
UFB
#72
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Imagine if law abiding Mexicans had been free to carry arms anywhere and everywhere in the manner that US gun carry proponents seem to think all law abiding citizens should be allowed to do - the border agents would be very likely be dead. Oh the irony!
The response by the agents in this incident seems to be just the tip of the iceberg regarding the "I felt slightly threatened so I automatically killed the threat" response that seems to be coming the SOP of more and more American law enforcement officers. It's a slippery slope.
Last edited by OttawaMark; Sep 18, 2012 at 9:57 am
#73
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In the eyes of some groups of people the answer is yes. I mean, if LE is not allowed to shoot and kill someone presenting a minimal threat even when other avenues of response are available then it won't be long before "law abiding armed citizens" will have to follow the same rules. And they simply can't let this happen. Therefore the shoot is deemed justified.
#74
Join Date: Jul 2005
Posts: 861
US Border Patrol agents shoot each other
http://online.wsj.com/article/SB1000...googlenews_wsj
Tragically, the Border Patrol killed another person. This time it was one of their own.
This is unquestionably a dangerous line of work, but it seems the agents are too trigger-happy.
Tragically, the Border Patrol killed another person. This time it was one of their own.
This is unquestionably a dangerous line of work, but it seems the agents are too trigger-happy.
#75
Join Date: Apr 2004
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http://online.wsj.com/article/SB1000...googlenews_wsj
Tragically, the Border Patrol killed another person. This time it was one of their own.
This is unquestionably a dangerous line of work, but it seems the agents are too trigger-happy.
Tragically, the Border Patrol killed another person. This time it was one of their own.
This is unquestionably a dangerous line of work, but it seems the agents are too trigger-happy.