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Subject: 75MM Pack Howitzer
Gilbert    6/1/2005 11:43:50 AM
There is a WWII 75MM Pack Howitzer M1A1 in a park near my house, and I've been wondering how effective a weapon it really was. I found the maximum range to be about 9600 yards, but what I'd like to know is how accurate was it at that range, or any reasonable range for that matter. I see that the accuracy of modern weapons is measured in Circular Error Probability (CEP), but I can't find anything about the 75MM. Is there any data or a person with first hand experience out there who could comment on this?
 
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packhow75    RE:75MM Pack Howitzer   1/23/2006 5:50:51 PM
The website is run by a friend... however am sure he'll be happy to know someone likes it. Cheers Tim
 
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Gilbert    RE:75MM Pack Howitzer   2/22/2006 10:39:11 PM
Gentlemen, I have been trying for months to find out how many of these pieces were produced. In case any of you are interested, here is a paragraph I found in the book "D-Day The First 24 Hours" by Will Fowler. Pg. 113. Amber Books Ltd. 2003. London. "The 75mm (2.95in) Pack Howitzer M1A1 on Carriage (Airborne) M8 was a US design. For parachute drops, the howitzer could be broken down into nine loads. It had a muzzle velocity of 381m/sec (1250ft/sec) and a maximum range of 8930m (9760yds), firing a 6.25kg (13.76lb) M41A1 shell. It originally weighed 588kg (1296lb) but with rubber tyres, this increased to 608kg (1340lb). By the end of the war, some 4939 75mm (2.95in) M1A1 Pack Howitzers had been built." Gilbert
 
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Gilbert    Effectiveness of the 75mm   1/2/2007 6:37:28 PM
Gentlemen,
 
Do any of your have an idea of how effective the 75mm Pack Howitzer was? Suppose 20 rounds of WP or HE were fired from a few miles away into my neighborhood of suburban houses on 80 foot lots, would that be the end of the neighborhood – what kind of damage might I expect to see?
 
Gilbert
 
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Carl S       1/4/2007 5:07:08 PM
The WP (white phosphous) would set any flamable walls, roofs, or vegitation on fire.   The fire fighters would be better off using chemicals than water on the phosphous clumps.  They would problably finish the job by smothering the remaining phosphous with a shovel of sand or other soil.

The explosive rounds damage would depend on the construction of the buildings.   European style masonry or concrete would stand up fairly well to the light explosive charges.   Tho tile & slate or metal roofs would take a beating.

Twenty rounds would be a fairly light suppresion mission.  Enough to make any defenders in buildings or trenches duck for a minute or two.  
 
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Gilbert    Burst Radius   1/13/2007 11:33:05 PM
 

Regarding the WP rounds: What would the effective radius be for an airburst? I've seen photos of villages being destroyed by WP from the 5-inch guns of a Fletcher class destroyer. Of course the effect of a 5-inch shell would be considerably larger than a 75mm, but I'm trying to get a feel for what can be accomplished with a 75mm. Are there any historical reports around giving an account of how effective a weapon it was?

 
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Carl S       1/15/2007 6:23:57 PM
It would take a lot of WP ammo for anything but a hasty smoke mission.  One way to estimate this would be to compare the ammount of WP in the 75mm round vs the 5".  I dont have a refrence for this handy, sorry.  Cant recall any effects table for the WP either.  
 
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Gilbert       1/24/2007 11:06:57 PM
This is interesting. Last week I was talking to a guy who was in the artillery on Iwo Jima assigned to a 75mm howitzer battery. I asked him how much damage a 75mm shell could do, and he said, "not much." However, he did add that he was not on the receiving end.
I guess that my original scenario of 20 rounds was a way too little. While checking around the Internet, I saw an account of the battle of Peleliu at < link which stated that 65,000 75mm rounds were fired during the battle. If one round weighs about 16 pounds, then 65,000 would be equivalent to over 2000 five hundred pound bombs! It seems like that should be able to take out a good part of any city. Isn't there anything out there that illustrates how effective these guns were? I'm trying to make a case that this was a great little weapon.
 
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stbretnco       1/24/2007 11:58:49 PM
Of the Korean War vets I know, I know of none who thought the 75mm pack how was worth the trouble, unless it was a weapon of last resort.
 
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Carl S       1/25/2007 7:13:36 AM
Against infantry & other 'soft' targets in the opean these light cannon & mortars are great.  & the light ones are suitable for difficult terrain.  vs most armor or entrenchments the ammo of this caliber & Mv is usefull only for temporary suppresion.
 
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Yimmy       1/25/2007 4:30:32 PM

Of the Korean War vets I know, I know of none who thought the 75mm pack how was worth the trouble, unless it was a weapon of last resort.

But then, in Korea we didn't have modern air-burst munitions.

Perhaps we could manufacture a light weight gun, which can be broken down for transport, which uses the italian 76mm family of ammunition.

 
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