Synchronised .303

[RogerKP]

I have recently bought an original box of American, made for the RAF, .303 cartridges for synchronised firing. The cartridge cases have all been fired and the bullets replaced - the replacement bullets don't look like .303s ( see picture). They are much shorter. Are they the original bullets that would have been in the cartridge cases? Are they special for synchronised firing? Or are they just replacements that someone has put in? Bullet is about 29mm.
Thanks
Roger

 

[Andysarmoury]

View attachment 196617

I have recently bought an original box of American, made for the RAF, .303 cartridges for synchronised firing. The cartridge cases have all been fired and the bullets replaced - the replacement bullets don't look like .303s ( see picture). They are much shorter. Are they the original bullets that would have been in the cartridge cases? Are they special for synchronised firing? Or are they just replacements that someone has put in? Bullet is about 29mm.
Thanks
Roger

They look like 308 to me. what is the diameter of the bullet ? plus what is the head stamp.

 

[Andysarmoury]

This is a pic of the round with its original 174 grain bullet.
cheers
Andy

 

[URG86-collector]

I also think that this is not an original .303 bullet. As in the example above from Andysarmoury, the .303 bullets I know of have a straight tail and not the torpedo-shaped one. I have attached an x-ray image of a Mk VII projectile also from the Second World War.

Best Regards
urg86-collector