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30-06 and .50 BMG have the same velocity and similar trajectory. In world war II, both pushed their bullet to 2800 fps. At long range the .50 has greater inertia and resistance to windage so it has a flatter and more predictable long range trajectory.Honestly, I don't know. But then freezing wouldn't be such a problem "up there"?
Sorry, what? vrs? What do you mean, the airflow disturbing the trajectory?
I meant the airflow increasing the cooling of the gun.
D@mn, I can't believe I wrote it that way (my apologies, Galileo)! What I meant is that the bigger bullet will be affected sooner, as I believe it's speed usually is lower to start with.
How come a smaller bullet has more drag? It doesn't have so much "frontal surface", so it should be better?
I don't know of any Russian Twin-Engine fighter. If they made their own Destroyer (РАЗРУШИТЕЛЬ?) aircraft with a pair of Mikulin or Klimov engines, it would certainly warrant consideration.
Thanks for letting me know about that. doesn't seem to have had an awesome armament package though. Six Berezin UB or Four 20mm ShVAK in that plane would be pretty scary though.Pe-3 was a twin engined heavy fighter with 2 x Kilmov 1,260hp engines.
They didn't make very many of the Pe-3s though, only about a thousand?Pe-3 was a twin engined heavy fighter with 2 x Kilmov 1,260hp engines.
probably wasn't worth the cost of two engines per AC.Interesting, looks like the Pe-3 had some real potential there...wonder why they never took advantage of it.
the Soviet equivalent to the M2 .50, the 12.7mm Berezin UB was more powerful than the M2 and half as heavy with a better rate of fire. The German 13.1 mm MG 131 was similar in its advantages. Furthermore, the MG 151/20 was probably the best of the 20mm cannons.Remember the p 47 had 8 brownings and no one complained about to little firepower. The .5 outranged the Japanese 20mm because that gun fired with an unlocked breech and was an inferior weapon. The German early 20's also used an unlocked breech and was at best only comparable the multiple .303 brownings used by the RAF.
For its time the .5 was the best gun but the best gun of the war was the developed belt fed Hispano 20mm.
OK, maybe I'm wrong.
the Soviet equivalent to the M2 .50, the 12.7mm Berezin UB was more powerful than the M2 and half as heavy with a better rate of fire. The German 13.1 mm MG 131 was similar in its advantages. Furthermore, the MG 151/20 was probably the best of the 20mm cannons.
The Berezin B-20 was definitely IMO the best cannon to see service in the war. I didn't mention it because it came so late in the process.The German MG 131 also had a few disadvantages-like a lighter projectile and a lower MV.
The German MG 151/20 aso used lighter shells at a lower velocity. It may also have been more difficult to make.
They both came late in the war but the Berezin B-20 and Hispano MK V may have been the best 20mm guns of the war.
Pretty certain it was used through 1945. It was invented in 1944 and basically was a Berezin UB with a different barrel, so existing lines could be converted without any delays.A question, it's certain the use of B-20 in world war II?
The La-7 had it. But not many were delivered.
Kris
True. Only 368 3-cannon La-7s were delivered to combat units before the end of the war, compared with more than 3,000 of the 2-cannon variety.Afaik not from start of La-7 production