.308 inches = 7.62mm & a .223 inch = 5.56mm. The 20 mm caliber is a common firearm bore diameter, typically used to distinguish smaller-caliber weapons, commonly called "guns", from larger-caliber "cannons" (e.g. 20mm Sniper rifle vs Nokia 3310 cellphone. while a .50 CAL gun is a formidable killer even at 1+ Km distances and it doesn't suffer from trajectory drops as much as a 20mm shell fired from a oerlikon type gun (600-700m/s max), if your target is less than 300m away, you're not going to use the ballistic advantage of the .50 CAL boat taile bullet 20mm Vulcan Prius vs Army MICH Helmet 50 Cal. There are numerous accounts of planes making it back across the channel filled with dead and dying crew or piloted by a crew member that's not the pilot after being hosed by 8 gunned Spits and Hurri's. His blog Nextbigfuture.com is ranked #1 Science News Blog. Plus sur. But why define cannons by mass? The .50 BMG cartridge was developed for the Browning .50 Caliber machine gun in the late 1910s, we now take these recycled/once fired rounds and make them into the best man gifts on the market! In 1934 the Air Ministry had decided to accept the advice of the Operational Requirements Branch that in view of the increasing speeds of both fighter and bomber aircraft, gun firing opportunities would be brief, so a six or preferably eight-gun battery should be installed in fighters. The main deciding factor of cannon vs machine guns is in the 'terminal ballistics'. Over 300 hits is the statistical average of what was found it took to shoot down a fighter. See all → Splitting a Bullet on a Knife w/ Viking Tactics Will a 50 cal Bullet Arc on a Stun Gun? Wouldn’t want to get hit with one of those . 20mm, especially those with explosive filler, are underperfoming as they simply do not perform as well as they should, and because they also spark a ♥♥♥♥♥♥♥. LMG's were not as good at this as you may first think. The Axis 20mms hit harder per projectile. .50 Cal Machine Gun vs 20mm Autocannon – Which Inflicts the Most Damage. 1/96 USN 4 inch 50 (10.2 cm) Sub Gun Deck v1 $ 17.32 by diStefan 3Dprint. All rights reserved. The staff at Bottle Breacher used to use .50 Caliber ammunition to defend our country down range, it is now used to provide jobs for our veterans. Your email address will not be published. Sony Playstation PS4 vs .50 cal Slow Mo Desstruction at 50,000 FPS. There were disadvantages, of course. you guys cant aim, i jsut used a stock G14 and tore a p47s wing off in around 5 rounds and remember those are stock belts so 2 HE per 5 rounds, isnt it wierd that you shoot a plane several 20 mm air targets(minegrshoss) at an enemy plane and all you get is hit while you shoot 2 rounds with a 12.7 mm machine and instanlty blow off a wing or start a fire. Even a small charge (5-6 gr) is able to break the bullet into a handful of heavy fragments travelling in a cone volume starting from the point of impact. Which are better/what are their characteristics? Most service 20mm cannon fired at least 500rpm (early German and Japanese guns) while later German (MG 151) and Japanese army (Ho-5 cannon) fired at 700-750 rounds a minute. Currently, .50 cal perform better than 20mm, because .50 cal's got a buff where they penetrate better at longer ranges, and because there's so many of them they are very strong at causing fires. Don’t worry about the one on the left, that’s a round from the old French ‘50’s-era Aden cannon. Use US planes until (if) they buff 20mms. Stuff : https://edwinsarkissian.com Insta : https://www.instagram.com/edwinsarkissian/ . Amazing sniper rifle shot : 500 yards shot without even looking! .50 cals have an advantage at lower ranks, however, 20mm cannons take the lead somewhere in rank 3. À suivre. Didnt they nerfed the 50cals again ? The pilot was a very lucky man. Common myth say's the .303's weren't effective against German aircraft in the BoB because they were fitted with armor, what people fail to realise is the armor was fitted because of the number of pilot injuries and deaths suffered in the Battle of France.