The 6,5 Carcano muti ball cartridges are common with variations as well as your 8mm Lebel.

The 9,3x62 mm is still be used and even been tried on M1icon rifles during the past few years

The 303 Mark VI was still being manufactured during WW1 and is common.

I believe your 270 might be Browning maufacture as they did remove their headstamp from alot of their production commerical cartridges (I have some 30-30 with the headstamp removed)

photo shows Italianicon 8x59mm m/g cartridge and 6,5 Carcano muti ball cartridgeAttachment 111432
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