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Pistol Round accuracy comparisons

Posted on 2/3/22 at 12:15 pm
Posted by spacewrangler
In my easy chair with my boots on..
Member since Sep 2009
9875 posts
Posted on 2/3/22 at 12:15 pm
Which pistol caliber is the most accurate? Is one calber inherently more accurate than another?

9mm vs .40 vs 45acp vs .357sig vs .380acp

Or is it negligible at common pistol distances?

25yds
50yds
Posted by bbvdd
Memphis, TN
Member since Jun 2009
28535 posts
Posted on 2/3/22 at 12:23 pm to
I don't think it really matters at common pistol distances.

More important is the gun you're using. I have a 2011 that I built that is incredibly more accurate than production pistols. That gun however is extremely tight with a trigger that would rival what you would find in a good rifle.

Posted by spacewrangler
In my easy chair with my boots on..
Member since Sep 2009
9875 posts
Posted on 2/3/22 at 12:35 pm to
quote:

More important is the gun you're using


Of course that is more important. But say you have 2 pistols of equal quality, Shooting the sane style bullet. 9mm vs 45acp. Shooting at 50yds. Which round is more accurate?
Posted by DownshiftAndFloorIt
Here
Member since Jan 2011
71857 posts
Posted on 2/3/22 at 12:42 pm to
quote:

negligible at common pistol distances


Likely negligible at any distance.
Posted by kengel2
Team Gun
Member since Mar 2004
33688 posts
Posted on 2/3/22 at 12:43 pm to
9mm is faster. Stability would be better the further you go out.
Posted by DownshiftAndFloorIt
Here
Member since Jan 2011
71857 posts
Posted on 2/3/22 at 12:45 pm to
Neither one. Both are short straight wall cartridges that headspace off the case mouth.

I guess you could nerd out on what the chamber and throat specs of each one are and all that shite, but in reality it doesn't matter. Cartridge and chamber design only come into play when shooting so far that very obscure differences become noticeable. For almost all normal shooters, the particular cartridge used is an entirely irrelevant part of the accuracy equation.
Posted by BAMBAM
Biloxi, MS
Member since Mar 2008
2525 posts
Posted on 2/3/22 at 12:47 pm to
I’d say the pistol has more to do with accuracy and repeatability than the round itself. My guns personally they perform about the same but I have a 9mm sig. with a trigger job is snappier than my stock 45 XDM but I shoot them about the same the 45 maybe a hair better because it’s a bigger gun and. Frame
Posted by kengel2
Team Gun
Member since Mar 2004
33688 posts
Posted on 2/3/22 at 12:51 pm to
Hit Probability Calculator

Fill it out and let us know the results.

Applied Ballistics has a better version, but its $200.

LINK
This post was edited on 2/3/22 at 1:15 pm
Posted by BorrisMart
La
Member since Jul 2020
9026 posts
Posted on 2/3/22 at 1:01 pm to
I think it would be negligible. However, I also think if you are talking firing in succession, different models/brands/calibers/sizes are going to recoil and reset at different angles, or in a different way. Like when you shoot and the gun recoils where does it come back down at? That affects accuracy by a lot if shooting more than once quickly. Trigger weight definitely plays a factor in that as well. I am sure there is a technical term for what I am referring to but idk. However, this is more a form and experience issue and learning the pistol over time.
This post was edited on 2/3/22 at 1:04 pm
Posted by armsdealer
Member since Feb 2016
12295 posts
Posted on 2/3/22 at 4:42 pm to
Accuracy isn't going to change at all. Precision may be improved on quick follow up shots on rounds with less felt recoil. The biggest precision improvement you are going to see in a pistol is going to a bigger, heavier gun. Even the longer barrel for the longer site radius is not as good as a simply bigger, heavier gun to keep the gun flat for follow ups. Compensators are also great, and well suppressors are best for keeping guns flat while shooting.
Posted by spacewrangler
In my easy chair with my boots on..
Member since Sep 2009
9875 posts
Posted on 2/3/22 at 10:09 pm to
quote:

are short straight wall cartridges that headspace off the case mouth.



I did some research and a poster on a 1911 forum stated that the 9mm snd 38 super are actually tapered cases and therefore are inherently slightly more accurate than 45, 40, 380 and etc.

Link for reference to the thread on same subject

LINK
Posted by GREENHEAD22
Member since Nov 2009
20758 posts
Posted on 2/3/22 at 10:35 pm to
Most pistol engagements happen within 5yrds. Get a 45 acp and get good at pulling it quick and unloading it within a 3" group quickly.
This post was edited on 2/3/22 at 10:36 pm
Posted by DownshiftAndFloorIt
Here
Member since Jan 2011
71857 posts
Posted on 2/4/22 at 5:26 am to
Ah, cool. Did not know that. I had heard before that 38 super was supposed to have been designed for accuracy.

Makes sense that being tapered could help a little bit
Posted by EF Hutton
Member since Jan 2018
2366 posts
Posted on 2/4/22 at 5:57 am to
quote:

Most pistol engagements happen within 5yrds


Accurate. I found out why in academy training and requalifying every year, we spent so much time at 2 yards.

Upon signal you will take 1 step back, draw revolver from hoster, and fire 2 rounds from ready gun. Re-holster. ( Ready gun is gun out front but lower than level that you can use sights. Its an instinct shoot. ) This was repeated over and over . I found out why years later.
Repetition develops instinct.

I would think that 9mm accuracy would be good from a Beretta 92F, with the 5 inch barrel, and trial & error test ammo.



Posted by cable
Member since Oct 2018
9735 posts
Posted on 2/4/22 at 8:02 am to
quote:

Most pistol engagements happen within 5yrds. Get a 45 acp and get good at pulling it quick and unloading it within a 3" group quickly.


Yea, I'm not hitting shite with a pistol at 50 yards. Based on the range I'm ok at 30. I'd prefer to not use a pistol at anything over 20.
This post was edited on 2/4/22 at 8:04 am
Posted by biglego
San Francisco
Member since Nov 2007
84155 posts
Posted on 2/4/22 at 8:19 am to
quote:

I'm not hitting shite with a pistol at 50 yards. Based on the range I'm ok at 30. I'd prefer to not use a pistol at anything over 20.


Hell, at my local indoor range I have trouble seeing 25 yards down Bc there’s just not enough lighting and I guess my eyes are weak. Even so, I know I’m not good at that distance with a handgun. But if I had to choose a handgun for that distance, I’d pick the heaviest, longest barrel revolver I could find, and it’d be either 22lr or 38spl. Shoot it single action.
This post was edited on 2/4/22 at 8:20 am
Posted by dawg23
Baton Rouge, La
Member since Jul 2011
5066 posts
Posted on 2/4/22 at 10:30 am to
quote:

I found out why in academy training and requalifying every year, we spent so much time at 2 yards.
I hope y'all shot more at longer distances than 2 yards. I don't think I ever took a class where we shot at distances closer than 10 feet - with the majority at 21 feet.
Posted by dawg23
Baton Rouge, La
Member since Jul 2011
5066 posts
Posted on 2/4/22 at 10:33 am to
quote:

Or is it negligible at common pistol distances?25yds
50yds

Negligible at common pistol distances if you're talking about self-defense.

If you're taking about hunting (and I assume you are, since you listed some pretty long distances), I'd think the gun and your skill set will be bigger accuracy factors - but I've never hunted with a handgun.
Posted by EF Hutton
Member since Jan 2018
2366 posts
Posted on 2/4/22 at 11:48 am to
Post course involved 2 yards, 15 yards, and 25 yards.

I get the 2 yards, because in the field, we maintain a reactionary gap of 6 feet. No one gets closer than 6 feet.

Now, back in the 1990's, every leo underwent in service sensitivity training, that said certain ethnics gesture differently. Arabs like to get close, etc and we were not to take it as a reactionary gap intrusion.

I don't think so !

But i get it, the closeness of a field interview gone bad.
This post was edited on 2/4/22 at 11:56 am
Posted by EF Hutton
Member since Jan 2018
2366 posts
Posted on 2/4/22 at 11:58 am to
That one step back was supposed to create distance.

And knives ? Do not under estimate a knife wielding perp.

Surviving edged Weapons training showed that. A cadet with a rubber knife closed in on you, as you were expected to drop a mag and reload, to kill him. I beat him, but only by back stepping to buy some time. They can be on you in a second. Boom !
This post was edited on 2/4/22 at 12:02 pm
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