Thought I would post some photos of some of my 20x102mm rounds. No. 1 is a series of aluminum cased rounds. l-r: graphited case T283E1 projo; M55E4 projo; Amron case, M56E5 he projo; "243" headstamp, M56A4 HE projo; Harvey Aluminum case, XM246E1 HEIT-SD projo; Harvey Aluminum case, M56A3 HE projo; "07" headstamp. No. 2 l-r FA *49* headstamp, M99 projo, High Pressure Test (HPT); M54E1 HPT; M54E2, HPT; M54A1 HPT; Plastic body-aluminum based case, M55A2 TP projo; Teflon coated brass case for improved extraction, projo is stenciled "M-55 TYPE", but is actually a T283E1 projo; Fragment simulator carrier with the square fragment it carries. No 3 l-r: Flechette; flechette; M55A2 projo target marker , M55A2 projo target marker, M55A2 projo target marker, PGU 3/B Semi-AP Incendiary, M56A3 HE marked "INERT PROJ CHARGE PROPELLANT TEST"; Experimental projectile, steel lower body with a copper ogive. No. 4 l-r: Experimental machined rotating band that is part of the steel body; Experimental machined rotating band that is part of the steel body variation; Mark 68 Mod OA Phalanx anti-missile round; Phalanx variation; another Phalanx projo; No 5 l-r: T22E3 API; M53 API; M55A1 Ball; M55A2 Ball; M51E8 Dummy; Dummy, cadmium coated, no primer pocket, no markings; XM254 dummy.
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20x102mm Examples
- Thread starter EODGUY
- Start date
20x102mm Examples Part 2
Some more from the collection. No 1 l-r: M56 HE-T, M246 HEIT-SD; M246E1 HEIT-SD; M242 HEIT; M56A4 HEI; M56A3 HEI; M246 HEIT-SD cutaway with M505A3 PD fuze. No 2 l-r: M53 API Belgian; Spanish TP; Dutch MU-10 Break-up; French Paulette blank; French TP; French TPT; Dutch MN 40 AP. No. 3 l-r: Ring Airfoil projo, hollow airfoil profile; Ring airfoil variation; experimental plastic base; experimental plastic base, experimental plastic rotating band; flechette, 9 flechettes; fragment simulator projectile; experimental all plastic incendiary projo. No 4 l-r: experimental China Lake projectile prototype; second design, proof marking; second design; second design cutaway; plastic rotating band experimental; same, stamped "LOT DC-2" just below nose plug. No. 5 l-r: Display board of the FAT 237 HEI with the XM 722 PDSD fuze.
Some more from the collection. No 1 l-r: M56 HE-T, M246 HEIT-SD; M246E1 HEIT-SD; M242 HEIT; M56A4 HEI; M56A3 HEI; M246 HEIT-SD cutaway with M505A3 PD fuze. No 2 l-r: M53 API Belgian; Spanish TP; Dutch MU-10 Break-up; French Paulette blank; French TP; French TPT; Dutch MN 40 AP. No. 3 l-r: Ring Airfoil projo, hollow airfoil profile; Ring airfoil variation; experimental plastic base; experimental plastic base, experimental plastic rotating band; flechette, 9 flechettes; fragment simulator projectile; experimental all plastic incendiary projo. No 4 l-r: experimental China Lake projectile prototype; second design, proof marking; second design; second design cutaway; plastic rotating band experimental; same, stamped "LOT DC-2" just below nose plug. No. 5 l-r: Display board of the FAT 237 HEI with the XM 722 PDSD fuze.
Attachments
20x102mm Examples Part 3
No 1 display board of the AVCO designs for the (l-r) API design B; API design C; M56A3; SAPI design B; SAPI design C. No 2 display board for the SAPI PGU 3/B dummy and PGU 3/B SAPI rounds. No. 3 Harvey Aluminum display board for the T283 TP pilot run of the cold nose process formation. No 4 display board for the (l-r) M220 TP, M56A3 HEI & M246 HEITR-SD. No 5 l-r: T282E1 dummy, no primer pocket; DM 30 dummy; DM 40 dummy; French dummy; Spanish dummy; marked "20mm Dummy Experimental LC-4-1", T283E1 projo; Lake City AAP salt filled, steel case dummy (bad idea because the salt is actively eating away the case).
No 1 display board of the AVCO designs for the (l-r) API design B; API design C; M56A3; SAPI design B; SAPI design C. No 2 display board for the SAPI PGU 3/B dummy and PGU 3/B SAPI rounds. No. 3 Harvey Aluminum display board for the T283 TP pilot run of the cold nose process formation. No 4 display board for the (l-r) M220 TP, M56A3 HEI & M246 HEITR-SD. No 5 l-r: T282E1 dummy, no primer pocket; DM 30 dummy; DM 40 dummy; French dummy; Spanish dummy; marked "20mm Dummy Experimental LC-4-1", T283E1 projo; Lake City AAP salt filled, steel case dummy (bad idea because the salt is actively eating away the case).
Attachments
Dave,
Don't let me be the one to change your life!! I am more than positive that you could post a ton of things that would short circuit my keyboard as I drooled over it. I just thought I would randomly gather like caliber examples of some of the collection and post them. Sit down, grab a pint and take a deep breath.
Bob
Don't let me be the one to change your life!! I am more than positive that you could post a ton of things that would short circuit my keyboard as I drooled over it. I just thought I would randomly gather like caliber examples of some of the collection and post them. Sit down, grab a pint and take a deep breath.
Bob
imaokie2000
Well-Known Member
Hey Bob, Thanks for posting your collection. It's awesome. Have you got any information on the M99 and T283E1 projectiles. ie Ball, years testing, ect? Just about any information you have would be great. Also, I bought two Live "China Lake 20x102mm Experimental rounds" that has percusion primers and M95 projectiles. I came to the conclusion that they never existed and these are either custom loads or whatevers. Do you agree?
Thanks
....JR
Thanks
....JR
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Tony Williams
Well-Known Member
That's a terrific collection, Bob.
I can't see in it the one I'd really like for my collection - the streamlined PGU-28. This really ought to be common, as it's been the standard ammo in USAF and USN planes for decades, but I've never seen one outside of photographs.
I'd also like the two current Phalanx APDS rounds: with a white plastic sabot for the MK149 used in the standard Phalanx and with a red sabot for the MK244 used in the latest Block 1B.
I do have one of the new PELE rounds, though :tinysmile_classes_t
I can't see in it the one I'd really like for my collection - the streamlined PGU-28. This really ought to be common, as it's been the standard ammo in USAF and USN planes for decades, but I've never seen one outside of photographs.
I'd also like the two current Phalanx APDS rounds: with a white plastic sabot for the MK149 used in the standard Phalanx and with a red sabot for the MK244 used in the latest Block 1B.
I do have one of the new PELE rounds, though :tinysmile_classes_t
Here's a not so good pic of the PGU 28. As I said in a couple other popsts I loaded these nd the Phalanx rounds when I worked for GD-OTS. Pics of both the PGU and the newest Phalanx follow. We loaded all the SAPHEI rounds in 20mm and a newer round 25mm for the government, until ATK got part of the contract.
