Muzzle blast reduction?

[Rule3]

I was seeking really mild loads for 9mm to get my wife used to shooting it. Someone suggested a heavy bullet with Acc #7, I tried it and the difference was dramatic. So I believe type of powder and bullet as well as other factors such as length of barrel, do make a perceived difference.

Yes, it will, but it is a pea shooter compared to the big bore guns. Plus little to no muzzle blast compared to the big guns.
I shoot a lot of 44 Mag and figured I need a SW 460 Mag. Why? I have no idea I don't hunt. But I bought one. I shot it a few times and it was no fun for me. Even reduced loads. Ruger only 45 Colt in it were OK but a waste for killing paper. Gun was massively big and heavy besides.

A 9mm is not a 480 Ruger shooting a 400 grain bullet with 20 gr of H110

 

[Marcie]

I hear you guys talking about pressure, beeing a citical factor in muzzle blast.. But when shooting my .500-mag with, let's say, a 500 grain Hornady XTP bullet + 31 gr. H110.. i always have WAY less muzzle blast compared to the lighter bullets i use (mainly 350gr. ones).

With the full house 500 grain bullets, pressure is way more than with medium-load 350 grain ones.. BUT those 350 grain bullets + 39,0gr of H110 create a MASSIVE blast, litteraly making the windows shake at our indoor range... again using the same Hodgdon H110.. so i'm not getting the whole 'pressure thing' to be honest..

isn't it just a 'speed factor'? How fast the bullet accelerates from the cilinder through the barrel, in combination with a powder that's known for flash/noise/speed like H110?

Correct me if i'm wrong Greetzzz

 

[aurora40]

You use 31gr of powder with one bullet, and think 39gr of the same powder with a different bullet has less pressure at the muzzle? The 500gr may have more peak pressure, but more powder means more powder to keep the pressure up by the time the bullet reaches the muzzle.