Two unknown medium caliber cores

[Haenosaki]

Hi All,
I have two medium caliber tungsten cores I cannot identify.
core 1:
Length 4.58cm
width 1.32cm
bottom to shoulder 3.15cm
bottom to 2nd shoulder 4.14 cm
weight 75 gram
Core 1 has 2 distinct shoulders towards de point and a single recessed stripe on the bottom

core 2:
Length 4.16cm
width 1.30cm
edge on the bottom 0.30cm
weight77gram
Kern 2 heeft een afgeschuinde bodem rand en een vlakke bodem. De punt is parabolisch. Met stift staat er de tekst:
Core 2 has an edged lower part and a flat bottom. Point is parabolic. In black marker the following text is written on the side:
wc. core.
20mm
m61
But it doesn't look like any 20mm core I have seen. Seems a bit too big/heavy to be a 20mm core.
Thanks in advance for the help.

 

[stuff]

The second core looks very reminiscent of the APHC KAA.

Here are a couple of pictures of an example in my collection.

The dimensions are a little off but not by much.

Length 40.0mm
Diameter 13.5mm
Weight 72g

I hope this helps.

 

[Haenosaki]

It does look a lot alike, but for me, the biggest difference is the canted part at the bottom. That seems to be a lot bigger on my unknown core.
Thank you for the help.

 

[stuff]

Haenosaki you are correct the bevel at the base of the second core is far more pronounced but in answer to one of your first observations is it too big/heavy to be a 20mm core I would say I is right in the zone.

Two things occur to me when looking at it for a second time.

1. The design of the core looks to be of an older type, modern cores tend to have the double step and flattened cone point of your first core.

2. The surface finish of the core is poor. As tungsten is very corrosion resistant this could indicate a cast core. The weigh is close enough to indicate that it is a tungsten alloy.

I know it doesn’t resolve the problem but might offer a few more clues to follow.

 

[tomsk]

Well stuff thas answered a query iv had for years with the fuzes for your 20x128s ive got some but thought they were some kind of vulcan so thanks for that anyway.
Regards
Tom

 

[Haenosaki]

Haenosaki you are correct the bevel at the base of the second core is far more pronounced but in answer to one of your first observations is it too big/heavy to be a 20mm core I would say I is right in the zone.

Two things occur to me when looking at it for a second time.

1. The design of the core looks to be of an older type, modern cores tend to have the double step and flattened cone point of your first core.

2. The surface finish of the core is poor. As tungsten is very corrosion resistant this could indicate a cast core. The weigh is close enough to indicate that it is a tungsten alloy.

I know it doesn’t resolve the problem but might offer a few more clues to follow.

Thank you for the additional insights.