{"id":4862,"date":"2026-10-13T17:14:36","date_gmt":"2026-10-13T17:14:36","guid":{"rendered":"https:\/\/www.ammoforsale.com\/ammo-club\/?p=4862"},"modified":"2026-09-30T17:14:53","modified_gmt":"2026-09-30T17:14:53","slug":"22-lr-vs-32-acp","status":"publish","type":"post","link":"https:\/\/www.ammoforsale.com\/ammo-club\/22-lr-vs-32-acp\/","title":{"rendered":"22 LR vs 32 ACP"},"content":{"rendered":"

Overwhelming power: It\u2019s a very handy thing to have at your fingertips when someone means to do you immediate bodily harm \u2013 but it\u2019s not always practical. Some folks just can\u2019t handle a handgun that kicks like a mule. Others need a firearm they can easily conceal on their person, whether it\u2019s inside their pocket or their pocketbook. Still others already have a very powerful primary sidearm, but desire a smaller backup they can strap to their ankle.<\/p>\n

Overwhelming power: The 22 LR and the 32 ACP do not have it. But they are small cartridges, which makes their respective handguns extremely useful for the aforementioned reasons.<\/p>\n

So which of these pipsqueak cartridges would you be better off selecting for personal protection? We\u2019re going to compare the two rounds\u2019 ballistic performance, stopping power, recoil energy and more to settle the 22 LR vs. 32 ACP debate once and for all.<\/p>\n

Cartridge Dimensions<\/h3>\n

\"22<\/p>\n\n\n\n\n\t\n\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t
<\/td>22 LR<\/th>32 ACP<\/th>\n<\/tr>\n<\/thead>\n
Case type<\/td>Rimmed, straight<\/td>Semi-rimmed, straight<\/td>\n<\/tr>\n
Bullet diameter<\/td>0.223 in<\/td>0.3125 in<\/td>\n<\/tr>\n
Neck diameter<\/td>0.226 in<\/td>0.3365 in<\/td>\n<\/tr>\n
Base diameter<\/td>0.226 in<\/td>0.337 in<\/td>\n<\/tr>\n
Rim diameter<\/td>0.278 in<\/td>0.358 in<\/td>\n<\/tr>\n
Rim thickness<\/td>0.043 in<\/td>0.045 in<\/td>\n<\/tr>\n
Case length<\/td>0.613 in<\/td>0.680 in<\/td>\n<\/tr>\n
Overall length<\/td>1.000 in<\/td>0.984 in<\/td>\n<\/tr>\n
Maximum pressure<\/td>24,656 psi<\/td>20,500 psi<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n

Teensy-weensy. That ingratiating adjective applies to the 22 LR and the 32 ACP alike. The 22 LR has a slightly longer overall length, but the 32 ACP is approximately 40% wider in diameter. This means the 32 ACP is able to pack a 60\u201373 grain bullet as opposed to the 22 LR\u2019s usual 40 grains. We should expect the 32 ACP\u2019s approximately 75% heavier bullet to deal significantly more damage.<\/p>\n

We can also reasonably expect a rimfire round to be weaker than a centerfire one. Due to the nature of a rimfire primer\u2019s design, the 22 LR\u2019s case brass cannot be too thick or it will prevent ignition. Its thin case in turn limits the amount of chamber pressure a rimfire-primed round can generate (too much pressure would crack the brass and render the firearm inoperable).<\/p>\n

One more interesting point: the 22 LR is a rimmed round while the 32 ACP is only semi-rimmed. Without getting into too much detail, rimmed cartridges don\u2019t feed and extract as reliably in a semi-automatic firearm. This isn\u2019t to suggest you couldn\u2019t pour thousands of 22 LR rounds through a good semi-auto with zero failures to feed or extract, but the 32 ACP is designed for semi-autos while the 22 LR is not.<\/p>\n

32 ACP vs. 22 Long Rifle – Ballistics<\/h2>\n\n\n\n\n\t\n\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t
<\/td>22 LR - CCI Mini-Mag 36gr CPHP<\/th>32 ACP - Remington UMC
\n71gr FMJ<\/th>		22 LR - Federal 40gr LRN<\/th>32 ACP - Winchester
\n71gr FMJ<\/th>		22 LR - Win. Super Suppressed 45gr CPHP<\/th>32 ACP - Sellier & Bellot
\n73gr FMJ<\/th>\n<\/tr>\n<\/thead>\n
Muzzle velocity (fps)<\/td>1260<\/td>905<\/td>1200<\/td>905<\/td>1090<\/td>1043<\/td>\n<\/tr>\n
Velocity @ 25 yds<\/td>1176<\/td>879<\/td>1130<\/td>879<\/td>1053<\/td>1001<\/td>\n<\/tr>\n
Velocity @ 50 yds<\/td>1107<\/td>855<\/td>1074<\/td>856<\/td>1021<\/td>965<\/td>\n<\/tr>\n
Velocity @ 75 yds<\/td>1051<\/td>832<\/td>1028<\/td>834<\/td>992<\/td>934<\/td>\n<\/tr>\n
Velocity @ 100 yds<\/td>1006<\/td>811<\/td>989<\/td>813<\/td>967<\/td>905<\/td>\n<\/tr>\n
G1 ballistic coefficient<\/td>0.129<\/td>0.133<\/td>0.138<\/td>0.137<\/td>0.188<\/td>0.135<\/td>\n<\/tr>\n
Drop @ 25 yds<\/td>0<\/td>0.01<\/td>0<\/td>0.01<\/td>0.01<\/td>0<\/td>\n<\/tr>\n
Drop @ 50 yds<\/td>-1.34<\/td>-2.55<\/td>-1.48<\/td>-2.55<\/td>-1.73<\/td>-1.91<\/td>\n<\/tr>\n
Drop @ 75 yds<\/td>-4.47<\/td>-8.09<\/td>-4.84<\/td>-8.07<\/td>-5.55<\/td>-6.16<\/td>\n<\/tr>\n
Drop @ 100 yds<\/td>-9.55<\/td>-16.76<\/td>-10.25<\/td>-16.72<\/td>-11.58<\/td>-12.91<\/td>\n<\/tr>\n
Muzzle energy (ft lbs)<\/td>127<\/td>129<\/td>128<\/td>129<\/td>119<\/td>176<\/td>\n<\/tr>\n
Energy @ 25 yds<\/td>110<\/td>122<\/td>114<\/td>122<\/td>111<\/td>162<\/td>\n<\/tr>\n
Energy @ 50 yds<\/td>98<\/td>115<\/td>102<\/td>116<\/td>104<\/td>151<\/td>\n<\/tr>\n
Energy @ 75 yds<\/td>88<\/td>109<\/td>94<\/td>110<\/td>98<\/td>141<\/td>\n<\/tr>\n
Energy @ 100 yds<\/td>81<\/td>104<\/td>87<\/td>104<\/td>93<\/td>133<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n

Disclaimer: Our ballistic data are skewed, because the 22 LR data are taken from a rifle barrel while the 32 ACP data are taken from a pistol barrel. A longer barrel imparts significantly more muzzle velocity to a bullet and as the result better accuracy over longer distances. We can realistically expect a 22 LR pistol to produce a muzzle velocity closer to 990 fps<\/em><\/p>\n

Neither the 22 LR nor the 32 ACP are long-distance cartridges by any measure. That said, the 22 LR does offer better accuracy in spite of its smaller dimensions.<\/p>\n

An exceptional marksman can hit a 150 yard target with a 22 LR rifle; a 22 LR pistol, on the other hand, is generally good for rabbit-sized targets at 50 to 75 yards and human-sized targets at 100 yards. (Please keep in mind that if you disagree with this broad statement, it is only because you\u2019re a skilled shooter \u2013 which is a compliment and not an insult.)<\/p>\n

32 ACP rifles are relics and don\u2019t beg elaboration. 32 ACP pistols are generally accurate enough to strike a man-sized target at 50 yards, but a subcompact purse pistol has a hard time covering even that much distance.<\/p>\n

If you\u2019re wondering whether either of these rounds\u2019 will offer more of the accuracy you would want for reliable personal protection, then you don\u2019t have to worry. It is unlikely that you will have to neutralize a threat that is standing farther than five yards away. If you\u2019re concerned about encountering a threat standing 50 or 100 yards away, then you had better carry a rifle \u2013 and also have good justification for perceiving so distant a person as a threat in the first place.<\/p>\n

Stopping Power<\/h3>\n

\"The<\/p>\n

Many factors determine a cartridge\u2019s stopping power including penetration depth, wound channel diameter, and energy delivery.<\/p>\n

A bullet\u2019s ability to penetrate is measured by its sectional density, which is basically a number that reflects how efficiently it can overcome resistance from soft tissue it meets head on. The 32 ACP\u2019s 71 grain bullet has a sectional density of 0.104; the 22 LR\u2019s 40 grain bullet, 0.115. In effect the 22 LR can penetrate deeper \u2013 but only if it has enough momentum to let its sectional density shine at its fullest potential.<\/p>\n

The 32 ACP\u2019s bullet is nearly 0.1\u201d wider in diameter, so it\u2019s necessarily going to bore a wider, more incapacitating hole into a threat. \u201cBut what about terminal expansion?\u201d you might ask. Good question! Neither the 22 LR nor the 32 ACP bullet really gets enough energy to expand when fired out of a typical pistol barrel \u2013 regardless of whether it\u2019s a hollow point or JHP.<\/p>\n

As for energy delivery, as a general rule you want the bullet to deliver at least 220 to 300 ft lbs of energy on impact. On the best of days, neither the 22 LR nor the 32 ACP will ever deliver that kind of energy. But the 32 ACP does deliver a lot more energy.<\/p>\n

Recall that our ballistic data are skewed because the 22 LR data came from a rifle whereas the 32 ACP data came from a pistol. When a 22 LR is fired from a pistol, its muzzle energy<\/a> drops much lower to around 60\u201370 ft lbs. In effect the 32 ACP is actually about twice as powerful than the 22 LR close up, which makes its stopping power far more debilitating. (But still incomparable to that of the 9mm, which consistently boasts a muzzle energy in excess of 300 ft lbs).<\/p>\n

Recoil<\/h3>\n

Recoil is better known as kick \u2013 it describes how violently a firearm will jerk backward and upward when fired. Less recoil makes a cartridge more comfortable to fire, but it also makes it easier to keep your muzzle trained on the target. Basically, less recoil facilitates faster yet still accurate follow-up shots.<\/p>\n

How much recoil you\u2019ll actually perceive is impossible to calculate, because that is purely subjective. We cannot measure your nervous system\u2019s ability to sense discomfort. But we can objectively calculate recoil energy by taking into account four variables: propellant weight, bullet weight, firearm weight and muzzle velocity.<\/p>\n

Let\u2019s compare the recoil energy of the six cartridges detailed above. For simplicity\u2019s sake let\u2019s assume all 32 ACP loads have 2.3 grains of powder and we are firing a Beretta 3032 Tomcat Inox (14.46 oz with empty mag); 22 LR rounds have 2 grains of powder and we are firing a Glock 44 (14.64 oz with empty mag).<\/p>\n\n\n\n\n\t\n\n\t\n\t\n\t\n\t\n\t\n\t
<\/td>Recoil Energy (ft lbs)<\/th>\n<\/tr>\n<\/thead>\n
CCI Mini-Mag 22 LR 36gr CPHP<\/td>1.06<\/td>\n<\/tr>\n
Federal 22 LR 40gr LRN<\/td>1.17<\/td>\n<\/tr>\n
Winchester 22 LR 45gr CPHP<\/td>1.21<\/td>\n<\/tr>\n
Remington UMC 32 ACP 71gr FMJ<\/td>2.01<\/td>\n<\/tr>\n
Winchester 32 ACP 71gr FMJ<\/td>2.01<\/td>\n<\/tr>\n
Sellier & Bellot 32 ACP 73gr FMJ<\/td>2.7<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n

It\u2019s plain to see that the 32 ACP produces about double the recoil energy of the 22 LR. But here\u2019s the thing: 2 ft lbs of recoil energy is still absolutely negligible. As such neither cartridge offers a real advantage in the form of lower recoil \u2013 even the smallest adult can comfortably fire either one rapidly and still see good accuracy.<\/p>\n

Price & Availability<\/h3>\n

The 32 ACP is not an obscure cartridge. You will find it at brick and mortar stores, and we typically have it in stock.<\/p>\n

But it pales in comparison to the availability of 22 long rifle ammo<\/a>. This is the world\u2019s most popular cartridge, full stop. Unless you\u2019re shopping during the midst of an ammo famine, you will find a wide selection of 22 LR ammo at every store you go to.<\/p>\n

Firearms are the same story. You won\u2019t have to hunt far and wide to find at least a few different semi-auto 32 ACP handguns for sale, but 22 LR semi-auto handguns and revolvers are omnipresent. What\u2019s more, you\u2019ll be able to find every imaginable style of 22 LR rifle: bolt-action, lever-action, semi-automatic, and even AR.<\/p>\n

Finally, 22 LR ammo is much, MUCH cheaper than 32 ACP ammo<\/a>. In short, if price and availability are your main criteria for preferring one cartridge over the other, the 22 LR is by far your better bet.<\/p>\n

Takeaway<\/h3>\n

Looking for a self-defense cartridge? A 32 ACP pistol\u2019s relative lack of power may suit it better as a backup weapon than as your primary sidearm, but even so it delivers about twice as much energy to its target at close range than a 22 LR pistol is capable of. All else aside, this simple fact makes the 32 ACP vastly preferable for personal protection.<\/p>\n

The 22 LR is not useless for self-defense (so long as you have good aim). Its tiny dimensions may make the 22 LR perfect for super-compact handguns and derringers, but where it really shines is as a cost-effective plinking, target shooting and varmint hunting cartridge. In summary, unless you\u2019re already extremely familiar with the 22 LR\u2019s performance and want to rely on that experience for self-defense, we\u2019d strongly advise going with the 32 ACP over 22 LR for personal protection.<\/p>\n","protected":false},"excerpt":{"rendered":"

Overwhelming power: It\u2019s a very handy thing to have at your fingertips when someone means to do you immediate bodily harm […]<\/p>\n","protected":false},"author":8,"featured_media":12210,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[109],"tags":[],"class_list":["post-4862","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ammo-caliber"],"yoast_head":"\n22 LR vs 32 ACP | Calibers Compared<\/title>\n<meta name=\"description\" content=\"We stack 22 LR vs 32 ACP in a head to head comparison. 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