7.62x51 for scale, 6mm Lee, 5.2mm Mondragon, 5mm Sturtevant



Experimentos de 1970: 6mm SAW, 6mm SAW aluminium-cased, 6.25mm British, 6.45mm Swiss, 6.5x43 German, 6.8x43 Remington SPC (commercial soft-point bullet loading: military bullets are shorter to match the overall length of the 5.56x45), 6.5mm Grendel, 5.56x45 for scale



Exotic attempts: 5.56x45 with Monad bullet, 4.5mm Schirnecker, 9/4mm Kaltmann (development round, with part-metal case), 5.56mm Folded, 5.56mm Hughes Lockless, 5.56mm US caseless, 6mm Voere caseless, early HK G11 4.7x21 rounds, final G11 4.7x33




Inexitosos experimentos post guerra: 7x36 Otterup, 7.5x38 Swiss,7.5x45 Czech, 7.5x43 French CRBA, 7.92x40 CETME, .280/30 EM-2, 7mm Compromise, 7.62x47 T65 (predecesor del 7.62x51 NATO), 7.62x51 con bala CETME.




Experimental US flechette rounds: 5.56x45 for scale, sectioned 5.6mm XM216, 5.6mm XM144, 5.6mm XM110, 5.6mm XM645 (all part of the SPIW programme), .330 Amron Aerojet (alloy case, with three flechettes)




Rounds for early automatic rifles: the 6.5x52 Carcano, 7.65 Mannlicher Carbine, .30 Pedersen, 8mm Ribeyrolle (replica), Swiss 7.65x35, .276 Pedersen, Swiss 7.65x38 with bullet alongside, 9x40 Lilja, 9x35 Lahti





Experimental cartridges under 6mm: FN 5.56x45 APDS, .12 US (3x47), 3.5x50 FN, 4.3x45 German, .17 US (4.3x46), 4.6x36 HK/CETME (with spoon-tip bullet), 4.85mm British, 5.56x38 FABRL, 5.6mm Eiger




Some experimental US rounds of the 1950s: .223 Remington (for scale), .224 Winchester E2, .25 Win FA-T 116 (6.35x48), .25 Win Duplex FA-T 127 (6.35x53), .22/30 Homologous (5.56x51), .27/30 Homologous (6.8x51), .25/30 Homologous (6.35x51), sectioned 7.62x51 M198 Duplex (which actually saw service).





Intermediate service cartridges: 6.5mm Arisaka, 7mm Medium, .30 M1 Carbine, 7.92mm Kurz, 7.62mm AK-47, 7.62x45 Czech, 9x39 Russian (silenced AP - replica round), 5.56x45 SS109, 5.45x39 AK-74, 5.8x42 Chinese