[1984]

Originally Posted by gaunt1

Soviet 12.7mm should be much more powerful than now. It was far superior to the Browning .50, and almost at the level of the MG151/15.

compare with what?

well, maybe, .50 too good (i remember here, before some patch .50 was more powerful), but berezin and mg151 very similar and not bad, and mg151 little better... what REALLY wrong here, ub vs. mg151?

mg151 - 2-4,5 g of HE, 960 m/s, 700 shots in min...

ubs - 2-4 g of HE, 860, 700-800...

AP of mg151 little better, especially, "H-Pzgr"...

and? i don't see here any really "wow" in compare with 15 mm, similar guns, but of course it's really good weapon (like in your link - "The gas operated UB was the best gun of its class, lighter (21kg) and faster firing than any other guns with similar ammunition performance.") - and remember this if you want start talking about "bad" soviet weapon of fighters, for example, "only ubs and shvak" (+ this is why i'm talking about differences of yak-7b without gargrot and yak-9, and about yak-3 before 13 serie)...


+ interesting thing about effectiveness -

Пули БЗТ, БЗФ, МДЗ обеспечивали возгорание не только топлива, но и конструктивных материалов самолета, созданных на основе алюминиево-магниевых сплавов.

you know materials of german fighters?

But ShVAK & B20 should be weaker. It had quite low HEI content for the total weight of the projectile.

now shvak weaker than mg151/20, hispano and vya-23, where you see problem here? or it's like what you written here usually?

and mg151/20 better mainly with "miningeschoss", but this special shell and not so obviously, what, mg really more better with this wunderwaffe than shvak (don't want write here now some rumors about this), and other german shells very similar with shvak shells in fact...

early HE shell for shvak (before 40-41) - 2.75 g of he...

late HE shell for shvak (after 41) - 5-6 g of he...


well, i think, maybe need some little corrects, but general problem - all 20mm guns like lasers...

second problem - 37 mm shells of ns-37 and m-4 (maybe, 30 mm too) not so deadly (too much "blank hits" of HE shells without any damage, sometimes help only AP hits... remember, for first yak-9t ONLY he shells, and later can only he too sometimes... and? you understood?)...

maybe, something more...


+ about n-37 and yak-9ut (i can't find time for read this book) -

Согласно описанию пушки, сделанному Нудельманом, темп стрельбы 400 выстр./мин, а средний темп на испытаниях в октябре 1944 г. 311 выстр./мин.