Complex sentence: US.50 cal and Russian 12.7mm ammunition is not interchangeable in either weapon.The russian 12.7mm round holds about 20% more powder than the Browning.50 cal round and has similar down range ballstics to its american round.
Split into simpler sentences: US.50 cal and Russian 12.7mm ammunition is not interchangeable in either weapon. The Russian 12.7mm round holds about 20% more powder than the Browning.50 cal round and has similar down range ballistics to its American round.