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I stumbled upon these today.
Bottom L-R:

9mm CP dated 1943, these were manufactured by Crompton Parkinson Co. Ltd 1939-1945
Kynoch 500-416 probably 410 grain bullet
Kynoch 300 magnum
Kynoch 375 Nitro
Kynoch 32-40
Kynoch '44 Winchester
R-P 45 AUTO
.25 rimmed
.22 rimmed

The three bullets top to bottom are a

Top .475" jacketed 485 grains
Middle No idea, it measures from .435" at the bottom through .427" and finally .419" at the top and looks to be a solid in that it has no exposed core either end however I am not convinced. certainly not something I have seen before. 413 grains. Anyone recognise it?
Bottom .420" round nose 400 grains

Probably the most interesting to me was the little 9x19 as it was made by Crompton Parkinson for a limited period only. I have a Hispano 20mm made by Halls Telephone Company in South Wales and it is interesting how many small and better known companies were producing such things from 1939-45 before returning to normal production.

I believe that Crompton Parkinson were manufacturers of electric light bulbs and associated equipment. It is interesting the diversity of manufacturers turning to war time manufacture from quite mundane industries. Quite amazing what we once could do. Unlikely now that a toy manufacturer could quickly turn its hand to firearm manufacture. I suppose that is the price of progress.

Lamps and Motors from memory and I am sure I have come across C-P Switchgear in the past however I may be mistaken.

They were certainly involved with things electrical and in the 70's marketed the first Long Life domestic bulbs. A long stretch from manufacturing ammunition. I wonder if it would happen now - somehow there does not seem the same need, or maybe things military have become so specialised and technically demanding companies would not be able to assume the skills required in short order. Very interesting though.

Wartime production
During the Second World War, Crompton Parkinson produced large quantities of .303 rifle ammunition at its Guiseley and Doncaster factories

An interesting note on Wikipedia

Cool. That R-P .45" Auto looks like an interesting lil' cartridge. Never heard or seen it before. Was it commercial or a military round for the mad and wonderful self-loading pistols of the time?

T75, I think it is military and I have seen similar before however I cannot find anything directly relating to it. The bullet itself looks to be hard and possibly with a visible inner core however I do not want to put a file across it for obvious reasons. I have seen similar armour piercing however I am not convinced with this one.

ovenpaa wrote:I stumbled upon these today.

DSC_2175.jpg

Bottom L-R:

9mm CP dated 1943, these were manufactured by Crompton Parkinson Co. Ltd 1939-1945
Kynoch 500-416 probably 410 grain bullet
Kynoch 300 magnum
Kynoch 375 Nitro
Kynoch 32-40
Kynoch '44 Winchester
R-P 45 AUTO
.25 rimmed
.22 rimmed

The three bullets top to bottom are a

Top .475" jacketed 485 grains
Middle No idea, it measures from .435" at the bottom through .427" and finally .419" at the top and looks to be a solid in that it has no exposed core either end however I am not convinced. certainly not something I have seen before. 413 grains. Anyone recognise it?
Bottom .420" round nose 400 grains

Probably the most interesting to me was the little 9x19 as it was made by Crompton Parkinson for a limited period only. I have a Hispano 20mm made by Halls Telephone Company in South Wales and it is interesting how many small and better known companies were producing such things from 1939-45 before returning to normal production.

Interesting

That flushing sound you hear is the stash I have festering in my cabinet for yours truly going down the pan

Tower75 wrote:Cool. That R-P .45" Auto looks like an interesting lil' cartridge. Never heard or seen it before. Was it commercial or a military round for the mad and wonderful self-loading pistols of the time?

R P or Remington Peters is a commercial make that simply goes under the Remington brand these days. The .45 is what was refered to as a semi-wad cutter bullet. In the good old days when we were allowed to shoot real pistols many .45acp users loaded a similar design in their pistols but they were often cast bullets and they usually weighed 185 gns. The SWC produced a nicer clean cut hole in the paper than a round nosed bullet and it still functioned and fed in a semi-auto pistol which is something almost impossible with a full wadcutter bullet.
I suppose that some still considered the need for plated or jacketed .45 SWC bullets hence the bullet shown here.

Crompton Parkinson had a battery factory in Newport (South Wales) and operated under that name until the latte 1970s or early 1980s when the name was changed to Hawker Sidley following a buy out. I suppose if they were already geared up for handling cast lead as in battery plates changing over to wartime bullet core production wouldn't have been that great of a change.

ovenpaa wrote:T75, I think it is military and I have seen similar before however I cannot find anything directly relating to it. The bullet itself looks to be hard and possibly with a visible inner core however I do not want to put a file across it for obvious reasons. I have seen similar armour piercing however I am not convinced with this one.

Chapuis wrote:

Tower75 wrote:Cool. That R-P .45" Auto looks like an interesting lil' cartridge. Never heard or seen it before. Was it commercial or a military round for the mad and wonderful self-loading pistols of the time?

R P or Remington Peters is a commercial make that simply goes under the Remington brand these days. The .45 is what was refered to as a semi-wad cutter bullet. In the good old days when we were allowed to shoot real pistols many .45acp users loaded a similar design in their pistols but they were often cast bullets and they usually weighed 185 gns. The SWC produced a nicer clean cut hole in the paper than a round nosed bullet and it still functioned and fed in a semi-auto pistol which is something almost impossible with a full wadcutter bullet.
I suppose that some still considered the need for plated or jacketed .45 SWC bullets hence the bullet shown here.

Crompton Parkinson had a battery factory in Newport (South Wales) and operated under that name until the latte 1970s or early 1980s when the name was changed to Hawker Sidley following a buy out. I suppose if they were already geared up for handling cast lead as in battery plates changing over to wartime bullet core production wouldn't have been that great of a change.

Cool. I never knew that.