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My current project
- Thread starter Ammo Rob
- Start date
Sorry for the size. I now know how to post them smaller now.
1. British or Canadian Naval 4 inch 35 pound Star Shell 1943
I am not yet sure about a lot of the stencilling though.
2. 81mm HE M43A1 easy enough
3. 1907 M fuse. Again some of the engraved letters have me stumped.
3-3-93-1
I.A&F.Co
Increments of 2 one hundredths of a second to just over 21 seconds.
4. A.P.C.B.C
6PR 7CWT which from my readings make it a 57mm anti-tank round
Further stencilling is XIT 8995 BS STC 98A 3144 of which I am at a loss.
5. Grenade, Smoke, WP, Hand No. 77 Mk 1 used by the UK and Canada.
6. German Grenade, Hand, Diskushandgranate (my favorite)
1. British or Canadian Naval 4 inch 35 pound Star Shell 1943
I am not yet sure about a lot of the stencilling though.
2. 81mm HE M43A1 easy enough
3. 1907 M fuse. Again some of the engraved letters have me stumped.
3-3-93-1
I.A&F.Co
Increments of 2 one hundredths of a second to just over 21 seconds.
4. A.P.C.B.C
6PR 7CWT which from my readings make it a 57mm anti-tank round
Further stencilling is XIT 8995 BS STC 98A 3144 of which I am at a loss.
5. Grenade, Smoke, WP, Hand No. 77 Mk 1 used by the UK and Canada.
6. German Grenade, Hand, Diskushandgranate (my favorite)
81mm M43A1
If I have something wrong please let me know.
Nomenclature/Model Number/Markings: Cartridge 81mm HE M43A1
Country Of Origin/Brief History: U.S.A.
Shell was designed to replace SHELL, H.E. M43 as the SHELL, H.E., M43
Used in WW2 up until the 1980’s
Main filling/Type of Fusing: Comp B used with a PD M525 or M717 Fuse
Markings/Colour Code: Olive Drab with Yellow Stenciling
Body Construction:
Total length: 13.32 in
Diameter: 81mm
Wall Thickness is:
Total weight is (X% main filling):
7.5 pounds
1.29 pounds for filling
Explain the composition of materials, what the body is made of, driving band(s) composition, fuze design:
Forged Steel
Purpose: Used against personnel and light material providing blast and frag
Functioning: When the cartridge is loaded, it slides down the mortar tube until the percussion primer in the ignition cartridge strikes the firing pin in the base cup of the mortar. The primer ignites the ignition cartridge, and the cartridge ignites the propellant charge. Rapidly expanding gases from the burning propellant expel the projectile from the tube and propels it to the target. The projectile is fin-stabilized in flight. The PD fuze functions on impact, detonating the fuze booster charge and in turn, the high explosive charge. The bursting charge shatters the projectile body, producing near optimum fragmentation and blast effect at the target.
Method of Disposal and environmental considerations:
Do not move
Disposal by detonation: Counter Charge Main Charge
References:
TM-43-0001-28 Chap 4 Pg 4-35
ORDATA II
If I have something wrong please let me know.
Nomenclature/Model Number/Markings: Cartridge 81mm HE M43A1
Country Of Origin/Brief History: U.S.A.
Shell was designed to replace SHELL, H.E. M43 as the SHELL, H.E., M43
Used in WW2 up until the 1980’s
Main filling/Type of Fusing: Comp B used with a PD M525 or M717 Fuse
Markings/Colour Code: Olive Drab with Yellow Stenciling
Body Construction:
Total length: 13.32 in
Diameter: 81mm
Wall Thickness is:
Total weight is (X% main filling):
7.5 pounds
1.29 pounds for filling
Explain the composition of materials, what the body is made of, driving band(s) composition, fuze design:
Forged Steel
Purpose: Used against personnel and light material providing blast and frag
Functioning: When the cartridge is loaded, it slides down the mortar tube until the percussion primer in the ignition cartridge strikes the firing pin in the base cup of the mortar. The primer ignites the ignition cartridge, and the cartridge ignites the propellant charge. Rapidly expanding gases from the burning propellant expel the projectile from the tube and propels it to the target. The projectile is fin-stabilized in flight. The PD fuze functions on impact, detonating the fuze booster charge and in turn, the high explosive charge. The bursting charge shatters the projectile body, producing near optimum fragmentation and blast effect at the target.
Method of Disposal and environmental considerations:
Do not move
Disposal by detonation: Counter Charge Main Charge
References:
TM-43-0001-28 Chap 4 Pg 4-35
ORDATA II
Last edited:
M1907M Combination Fuze
Please point out any errors
Nomenclature/Model Number/Markings: M1907M Combination Fuze
Country Of Origin/Brief History
U.S.A.
Used on 75mm Shrapnel munitions
Used in WW1
Main filling/Type of Fusing
Percussion/Powder Train
Time element
Black Powder
Markings/Colour Code:
21.2 sec time ring
increments of 2 one hundredths of a sec
Body Construction
Total length: 2.57 inches
Diameter:
Explain the composition of materials, what the body is made of, driving band(s) composition, fuze design:
Brass
Purpose: Used to initiate 75mm Shrapnel munitions
Functioning:
Percussion Action:
The percussion action becomes armed shortly after firing, when centrifugal force causes the spring-restrained plunger pins to move forward and release the firing pin. Upon impact, the plunger is driven forward against the percussion primer, initiating the primer and; thereby the magazine charge unless functioning has been caused by the time action.
Time Action:
Upon firing, set-back forces the time-action plunger rearward through the split ring, bringing the time action primer against the firing pin. The flame from the primer passes through the hole in the body and ignites the powder pellet in the fixed upper time ring. The flame from this ring ignites the pellet in the lower ring unless the fuze is set to safe, in which event the time action becomes a dud at this point. When set for other then safe the time of burning in the upper ring before ignition of the powder pellet in the lower ring is determined by the time setting. In the case of zero setting, the flame from the pellet in the upper ring is transmitted directly to the pellet in the lower ring and body and, thereby, to the magazine charge. With this setting, the shrapnel functions within 50 to 75 feet of the muzzle of the gun, with an effect similar to that of canister. With time setting greater than zero, the pellet of the lower ring is so moved in relation to the pellet of the upper ring that the powder train of the upper ring must burn until the pellet in the lower ring is reached. The powder train of the lower ring, in turn, must burn until the flame reaches the pellet in the body. The body pellet then ignites the magazine charge, unless prior functioning had been caused by impact and action of the percussion assembly.
Method of Disposal and environmental considerations
Do not move
Disposal by detonation: quarter block charge near fuze.
References
TM 9-1904 page 392 and 393
TM-9-1901 page 278
Chemical-List Side effects, if applicable when exposed to time
Include photo or photos (also photo credits)
Please point out any errors
Nomenclature/Model Number/Markings: M1907M Combination Fuze
Country Of Origin/Brief History
U.S.A.
Used on 75mm Shrapnel munitions
Used in WW1
Main filling/Type of Fusing
Percussion/Powder Train
Time element
Black Powder
Markings/Colour Code:
21.2 sec time ring
increments of 2 one hundredths of a sec
Body Construction
Total length: 2.57 inches
Diameter:
Explain the composition of materials, what the body is made of, driving band(s) composition, fuze design:
Brass
Purpose: Used to initiate 75mm Shrapnel munitions
Functioning:
Percussion Action:
The percussion action becomes armed shortly after firing, when centrifugal force causes the spring-restrained plunger pins to move forward and release the firing pin. Upon impact, the plunger is driven forward against the percussion primer, initiating the primer and; thereby the magazine charge unless functioning has been caused by the time action.
Time Action:
Upon firing, set-back forces the time-action plunger rearward through the split ring, bringing the time action primer against the firing pin. The flame from the primer passes through the hole in the body and ignites the powder pellet in the fixed upper time ring. The flame from this ring ignites the pellet in the lower ring unless the fuze is set to safe, in which event the time action becomes a dud at this point. When set for other then safe the time of burning in the upper ring before ignition of the powder pellet in the lower ring is determined by the time setting. In the case of zero setting, the flame from the pellet in the upper ring is transmitted directly to the pellet in the lower ring and body and, thereby, to the magazine charge. With this setting, the shrapnel functions within 50 to 75 feet of the muzzle of the gun, with an effect similar to that of canister. With time setting greater than zero, the pellet of the lower ring is so moved in relation to the pellet of the upper ring that the powder train of the upper ring must burn until the pellet in the lower ring is reached. The powder train of the lower ring, in turn, must burn until the flame reaches the pellet in the body. The body pellet then ignites the magazine charge, unless prior functioning had been caused by impact and action of the percussion assembly.
Method of Disposal and environmental considerations
Do not move
Disposal by detonation: quarter block charge near fuze.
References
TM 9-1904 page 392 and 393
TM-9-1901 page 278
Chemical-List Side effects, if applicable when exposed to time
Include photo or photos (also photo credits)
Your camera should have a macro setting which will allow a close up focus shot of any writing.
In this mode, the camera will focus on objects at very close range, often just a few centimetres, enabling extreme close-ups or highly magnified photos of small objects.
It is the small flower symbol.
Hope this helps.
PC
Nomenclature/Model Number/Markings
Grenade, Smoke, WP, Hand, No. 77 Mk1
Country Of Origin/Brief History
U.K.
Developed and used in WW1
Introduced in early 1943, this small white phosphorus grenade was intended for signaling and screening purposes but, like all WP grenades, it found greater battlefield value as an anti-personnel / incendiary weapon.
The grenade was declared obsolete in 1948 and stockpiles were destroyed for safety reasons. During the war, Canada also produced copies of the No.77, which were found to be of better manufacture and remained in service until the 1950's.
Replace by the No. 80 Smoke
Main filling/Type of Fusing
WP: 227 g
Impact Fuze No. 247
Markings/Colour Code
Black Cap
Green Cylindrical body
Stenciling in White
Body Construction
Weight: 383 g
Length: 118mm
Diam: 58mm
Explain the composition of materials, what the body is made of, driving band(s) composition, fuze design:
Thin tinned steel
Purpose: Smoke screens and incendiary effects
Functioning
Having removed the safety cap, the safety tape is kept in position by the fingers. When the grenade is thrown the weight at the end of the tape causes it to unwind, thereby withdrawing the safety bolt. Only the creep spring is now holding the striker apart from the cap. On impact, the striker overcomes the creep spring, fires the cap which sets off the detonator. This explodes the grenade. Immediately on contact with air the white phosphorus ignites and gives off smoke for about 30 sec.
Method of Disposal and environmental considerations
Do not transport. BIP
Disposal by detonation: counter charge bottom center.
References
Small Arms Training Volume 1, Pamphlet No.13 1942 page 35
ORDATA II
Grenade, Smoke, WP, Hand, No. 77 Mk1
Country Of Origin/Brief History
U.K.
Developed and used in WW1
Introduced in early 1943, this small white phosphorus grenade was intended for signaling and screening purposes but, like all WP grenades, it found greater battlefield value as an anti-personnel / incendiary weapon.
The grenade was declared obsolete in 1948 and stockpiles were destroyed for safety reasons. During the war, Canada also produced copies of the No.77, which were found to be of better manufacture and remained in service until the 1950's.
Replace by the No. 80 Smoke
Main filling/Type of Fusing
WP: 227 g
Impact Fuze No. 247
Markings/Colour Code
Black Cap
Green Cylindrical body
Stenciling in White
Body Construction
Weight: 383 g
Length: 118mm
Diam: 58mm
Explain the composition of materials, what the body is made of, driving band(s) composition, fuze design:
Thin tinned steel
Purpose: Smoke screens and incendiary effects
Functioning
Having removed the safety cap, the safety tape is kept in position by the fingers. When the grenade is thrown the weight at the end of the tape causes it to unwind, thereby withdrawing the safety bolt. Only the creep spring is now holding the striker apart from the cap. On impact, the striker overcomes the creep spring, fires the cap which sets off the detonator. This explodes the grenade. Immediately on contact with air the white phosphorus ignites and gives off smoke for about 30 sec.
Method of Disposal and environmental considerations
Do not transport. BIP
Disposal by detonation: counter charge bottom center.
References
Small Arms Training Volume 1, Pamphlet No.13 1942 page 35
ORDATA II
Nomenclature/Model Number/Markings
Diskushandgranate (German Grenade, Hand, 1915)
Country Of Origin/Brief History
Germany
Developed and used in WW1
Main filling/Type of Fusing
Chlorate
Markings/Colour Code
Turtle Shape
6 tubes
Body Construction
Weight: 415 g
Diameter:
Explain the composition of materials, what the body is made of, driving band(s) composition, fuze design:
Tin Shell
Aluminum Striker
Safety Cap covered a safety bar and was held on by a safety pin.
Four primer pellets chambers protruded out the edges of the grenade at equal distance from each other.
Weighted primers were held in by screw plugs
Explosive filling was held in 2 cloth bags and covered by the two piece sheet metal
Purpose:
Anti-personnel grenade
Functioning:
When ready to throw the grenade, the safety bin and cap are removed, the safety bar held in with the finger and the grenade thrown like a discus, in flight the rotation of the grenade causes the safety bar to fall out, exposing the points on the star shaped striker. When the grenade strikes the ground, the primer pellet facing the rear from point of impact is thrown forward into the percussion cap causing the grenade to detonate.
Method of Disposal and environmental considerations
Do not move
Disposal by detonation: counter charge main charge.
References
ORDATA II
Diskushandgranate (German Grenade, Hand, 1915)
Country Of Origin/Brief History
Germany
Developed and used in WW1
Main filling/Type of Fusing
Chlorate
Markings/Colour Code
Turtle Shape
6 tubes
Body Construction
Weight: 415 g
Diameter:
Explain the composition of materials, what the body is made of, driving band(s) composition, fuze design:
Tin Shell
Aluminum Striker
Safety Cap covered a safety bar and was held on by a safety pin.
Four primer pellets chambers protruded out the edges of the grenade at equal distance from each other.
Weighted primers were held in by screw plugs
Explosive filling was held in 2 cloth bags and covered by the two piece sheet metal
Purpose:
Anti-personnel grenade
Functioning:
When ready to throw the grenade, the safety bin and cap are removed, the safety bar held in with the finger and the grenade thrown like a discus, in flight the rotation of the grenade causes the safety bar to fall out, exposing the points on the star shaped striker. When the grenade strikes the ground, the primer pellet facing the rear from point of impact is thrown forward into the percussion cap causing the grenade to detonate.
Method of Disposal and environmental considerations
Do not move
Disposal by detonation: counter charge main charge.
References
ORDATA II
Good evening Ammo Rob,
I'm extremely sorry to say this... but my conscience can't not let you do this...present this item in class and you will have a few questions from your instructor for sure... :tinysmile_angry_t: plus maybe a F (for this item that is... I did not check the other items yet...)
Bud... you need to check your round and tell me what's wrong with this pict... literately!! Unless you're have the round on your desk...
Some of the info is right on but some of it is soo wrong... not by much though. Let’s start with the ID... yes it is a US round but have you notice the lot number???? US are not the only army who used the 81mm mortar system.
Next... the filling... Take a look at your picture again... I'll give you a hint... three letters, stenciled in yellow and quite big too...
Oh! One last thing... :tinysmile_twink_t: Please say hi to RyanA. I don't know him personally but I’m pretty sure I will eventually. The trade is quite small. lol.
Like I said to him... there are lots of good people on this forum with a lot of knowledge. Use it well. It is a good way to get started as for ID’ing the piece that you got… but you need to pay attention to details on your piece and come up with some info on your own as well… don’t need to tell you that as I’m pretty sure you have been on this forum a little bit longer then me… (I been on this forum for about a month now and it almost becoming a tool for me) But the purpose of your exercise is to be able to reseach.
I know that you they are making you answering specific questions on each piece like design, function, etc. Don’t hesitate to go a little more in depth… like the round is in a rain drop shape, the M525 fuze is a single action SQ type, what is the difference between the M43A1 and M43A1B1, (DETAILS...)
This is not just for you but also for your classmate on this as well...
Anyway, Hope for the best and good luck for your course.
We probably gona run in each other as I should be there for my 6A this autumn.
Hope this report is not due for tomorrow!!!
Cheers. TTYL
FCAT.
Last edited:
I had a second look at picture 2 in #10 and the 3144 is really a 3/44.
It is more likely to be a date stamp.
PC