Mosin muzzle blast observation

[603Country]

The neighbor's kid brought over his Mosin yesterday and shot off a few rounds. Dang...that thing (carbine length) really puts out a major muzzle blast. Seems way louder than any rifle I have. I know that this isn't just my imagination, so what (other than a short barrel) makes it so loud? He's shooting steel cased military rounds.

[sc928porsche]

Amount of powder, and powder burn rate.

[Duzell]

it sounds like a m44 or a type 53..?

anyway thats typical of those models. the 9130 dont have that much due to longer barrel length which reduced this. and i have a muzzle break to reduce rise, works fine.

any bayonet mosin can get a muzzle break easy, available on amazon @ decent price and will reduce it by..half id say

[Tempest 455]

Indoors is fun! My M44.

[ttarp]

^Wow I'd almost pick one up just for the muzzle blast after seeing that.

[Whiskeyandbikes]

^+1 now I really need an old Mossin
Whiskey

[Boomer58cal]

My .44 mag handloads with 2400 look like that at night. 3 or 4 foot of flame.

Boomer

[Mobuck]

Many military loads are designed or optimized for long range machine gun use. Most machine guns have longish barrels, therefore the ammo is loaded to produce top velocity in longer barrels. When slower burning powder is combined with shorter barrels the result is ferocious muzzle blast whether it's handgun ammo or surplus ammo.

[Tempest 455]

Correct. That wont do that in my 91/30 but will in my M38 and M44.

Also, when using handloads with faster powder, it will not do that in the M44. That pic was surplus Russian 147g.

[NateKirk]

Too much cosmoline maybe? My brothers first rifle was an M44 and he was ignorant of the fact that the cosmoline should be removed first before firing. The things still shoots fireballs, but not nearly as bad as that first range session.

[Duzell]

if anything you just need to be careful and youtube it?

[JD0x0]

Too much cosmoline maybe? My brothers first rifle was an M44 and he was ignorant of the fact that the cosmoline should be removed first before firing. The things still shoots fireballs, but not nearly as bad as that first range session.

I don't think it has anything to do with cosmoline. But you are very right about removing it before firing. Your bro's M44 throws fireballs because it's an M44 Carbine. Also one of the shortest factory Nagants. All the carbines will throw fireballs with ammo that was designed for longer 30in barrels.

[Justice06RR]

Yep, the Carbine Mosin's will do that.

I also have a AK pistol that does the same.

[jonnyc]

Oooohhh.......you should use some of the Czech SR ammo.....TWICE the fireball!

[SC4006]

The M44 sure will create quite the muzzle blast, but the 91/30 isn't exactly what i'd call quiet. When I let people shoot my 91/30 and im standing beside them, I can really feel the pressure wave hit my chest.

[tobnpr]

It's simply what SC928 said. The milsurp load is optimized for the much more common 28-3/4" (or thereabouts) barrel of the 91/30 and it's variants.

In the shorter carbine barrel, you have excessive powder still burning as the exhaust gases exit the barrel behind the bullet.

Far as handloads, it's basically a .308, though because of more case capacity (8 more gr H20) it can be loaded close to the .06. Most of us that shoot handloads for precision find that when approaching max loads accuracy deteriorates.

However, my long range handload is 43.5 of Varget and the 174 grain SMK...
exactly that of my son's .308 Savage, but with the 175 SMK.

Unfortunately, the 174 SMK is the only game in town when it comes to .311 match grade boolits. If only Berger made a VLD... it could be interesting.