ThatZenoGuy wrote: ↑
22 May 2021 15:39
critical mass wrote: ↑
22 May 2021 13:25
ThatZenoGuy wrote: ↑
22 May 2021 11:45
That picture interests me, what the heck is a PzGr 42 50mm projectile?
Also I think I've seen a picture referencing a PzGr 44 88mm (?) projectile from one of your posts, what is that? ;v
Which post? This is not a Pzgr.44. Its a 5cm Pzgr.42. These were developed to improve upon the 5cm Pzgr.39 downrange performance and obliquity performance. First delivery was made in august 1943 with proof trials conducting in septemper yielding these G(D) results:
30 deg series
70mm: 905m/s (sic. unknown if typo)
45 deg series
Little improvment had been obtained at 45 deg as compared to the 5cm Pzgr.39...
This one! ;D
Edit: Also did Pzgr 42 50mm ever get used in combat properly?
There is no 50mm Pzgr. 42 in this graph. The drawing shows a 88mm Pzgr. 44 (not standartized). Notice the difference in the headshape. The Pzgr.44 was supposed to have a 0.50 crh hemisspherical noseshape rather than the somewhat pointed Pzgr.39 and -42.
From what I read in the sources, the Pzgr.42 was provided when the 50mm KWK39 was relegated to secondary use. It saw eventually service as AP-ammunition for the feww 50mm FLAK41 guns. It may also have seen service in Spähpanzer, but I am not certain in regard to the latter. I cannot comment on whether or not it saw service in PAK39 but I doubt it.
CM, do you have a firing table for this round? I have nothing on the ballistics.
It's not very different from the graph of the pzgr 39 in Lilienthalgesellschaft-1943
No. the penetration data are retrieved from ADM 213/951. Because both projectiles varied very little in headshape, the differences in cap weight and shape are not large enough to cause substantial differences in 30° obliquity penetration performance, where both Pzgr. 39 and Pzgr.42 can be relied upon to stay intact. The difference are in 45deg obliquity, where the Pzgr.42 can be relied upon to perforate intact, while the then in service 5cm Pzgr.39 could only sometimes stay intact. Because the 5cm calibre was deemed obsolete by late 1943, the imrpovements in heat treatment achieved by the Pzgr.42 program were then simplified and re-applied to the 75mm, 76.2mm and 88mm projectiles in 1944, so that by autumn 1944, new proof specifications were issued calling for 45deg proof.