9mm 115 grain or 147 grain, Does it really matter

[SoftPoint]

I my gun, believe it or not, the 147's shot higher that the 115's. The 115's shot POI/POA at 10 yards, while the 147's were 1.5" high.

[camsdaddy]

That was the reason for my asking a frind here at work just had the same thing happen when he changed ammo. We thought the heavier bullet would hit lower guess not

[SoftPoint]

The reason I was given was two fold: 1. The bullet moves slower thru the barrel and is in the bareel longer, so is affected by the muzzle jump more.
2. The bullet is also longer, so more of the bullet contacts the barrel which in then makes it more stable leaving the barrel with more rear-ward weight, thus less bullet flip leaving the muzzle. The heavier bullets tend to have more consistently tight groups. Not sure if this is true, but this is what I was told.

[papajohn428]

We used to call it "Barrel Time", the axis of the bore rises higher from recoil by the time the bullet exits, hence a higher hit.  It took me several tries to get that thru to my son, he was sure something heavier would drop a lot more and hit lower.  Ain't free physics lessons fun?   :grin:

Papajohn

[jeager106]

I guess I'm a dinosaur too cause I feel comfortable carrying a 9mm or a 38spl( I carried a 38spl for years as a LEO, never felt undergunned) :wink:

Amen to that 257roberts!!!  :toast:  :toast:
When I got into police work in 1972 we were issed Smith M-10s and Colt Police Positives.
The load was the 158 grain r.n., a pathetic load but accurate and controlable.
We could HIT the target and we trained back to the fifty yard line as a matter of routine.
Even cops that weren't gun people and there were plenty of them, could hit a torso at fifty yards.
I never once felt unarmed with a .38 spl.
We did get better ammo later on.
We had officer involved shootings and let me tell you the 38 spl. 125 +p hollow point can tear up some real estate!
My "house guns" are an HK USP .45 and Ruger Security Six .357 by choice.
If I had only the .38 spl. or 9mm auto I would feel just as comfortable. :agree:  :agree:

[williamlayton]

The .38 super makes up for much of the loss of a .38 and can be loaded very soft. It is fun and accurate. The game folks like the round and it was the choice for penetration before the .357 was introduced.
Blessings