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10mm Auto vs .40 S&W: Maker-Page Loads and SAAMI Specs Side by Side

This page puts 10mm Auto and .40 S&W side by side using only our own ammo guides, 10mm Auto ammo (29 loads) and .40 S&W ammo (63 loads), plus the cartridge specs SAAMI publishes in ANSI/SAAMI Z299.3-2022. The guides copy bullet weights, velocities, energies and test barrels from maker product pages (checked Nov. 4, 2026). We don't rate or rank cartridges, and we don't subtract one maker's velocity from another's, because their test barrels differ.

How to read this page: every number is copied from a maker page or from SAAMI, and a test barrel length sits next to every velocity. A dash (—) means the maker has no load in our tables for that cartridge. Fire only the cartridge your firearm's maker says it is chambered for.

SAAMI specs side by side

These are the figures in ANSI/SAAMI Z299.3-2022, the centerfire pistol and revolver standard (approved Dec. 13, 2022). Pressures are maximum average pressure by transducer. The same figures appear in our 10mm Auto and .40 S&W guides.

Measure10mm Auto.40 S&W
SAAMI name10mm AUTOMATIC [10mm AUTO]40 SMITH & WESSON [40 S&W]
Drawing issued / revised07/18/1989 / 07/16/202102/01/1990 / 07/09/2021
Maximum average pressure (transducer)37,500 psi35,000 psi
Maximum average pressure, +P (transducer)SAAMI lists no +P cartridge for it in this standardSAAMI lists no +P cartridge for it in this standard
Cartridge overall length1.240 in min to 1.260 in max1.085 in min to 1.135 in max
Case length.992 in (−.010).850 in (−.010)
Bullet diameter.4005 in (−.0030).4005 in (−.0030)
Bore / groove diameter.3900 in / .4005 in.390 in / .4005 in
SAAMI velocity test barrel5.000 in4.000 in

Load ranges by maker and test barrel

Each line groups one maker's loads that share a test barrel, so a velocity is only ever shown with the barrel it was measured in. Ranges are bullet weight and muzzle velocity as the maker page prints them. Do not read across makers: their barrels and bullets differ.

Maker10mm Auto loads in our table.40 S&W loads in our table
Federal5 in test barrel: 8 loads, 180 to 205 gr, 1,030 to 1,275 fps
6 in test barrel: 1 load, 200 gr, 1,200 fps
test barrel not listed: 5 loads, 180 to 200 gr, 1,100 to 1,200 fps
4 in test barrel: 20 loads, 120 to 205 gr, 850 to 1,330 fps
test barrel not listed: 2 loads, 165 to 180 gr, 950 to 1,130 fps
Speer5 in test barrel: 1 load, 200 gr, 1,100 fps3.5 in test barrel: 1 load, 180 gr, 950 fps
4 in test barrel: 6 loads, 165 to 180 gr, 1,000 to 1,150 fps
4 in vented test barrel: 1 load, 180 gr, 1,000 fps
5 in test barrel: 1 load, 180 gr, 1,015 fps
Remingtontest barrel not listed: 5 loads, 180 to 200 gr, 1,110 to 1,150 fpstest barrel not listed: 19 loads, 155 to 180 gr, 785 to 1,205 fps
CCI5 in test barrel: 1 load, 180 gr, 1,175 fps
test barrel not listed: 2 loads, 180 to 200 gr, 1,050 to 1,200 fps
test barrel not listed: 6 loads, 165 to 180 gr, 970 to 1,100 fps
Hornady5 in test barrel: 5 loads, 135 to 200 gr, 1,160 to 1,410 fps
test barrel not listed: 1 load, 150 gr, 1,220 fps
4 in test barrel: 7 loads, 135 to 180 gr, 950 to 1,180 fps

Same maker, same line, both cartridges

Where one maker sells the same product line in both cartridges, the loads are listed here side by side exactly as the maker pages print them. We match lines by the maker's own product-line page (Hornady by load name). Compare only within a row, and check the test barrel in each cell.

Maker line10mm Auto.40 S&W
Federal Personal Defense HST200 gr HST Jacketed Hollow Point, 1,130 fps, 567 ft-lb, 5 in test barrel, item P10HST1S180 gr HST Jacketed Hollow Point, 1,010 fps, 408 ft-lb, 4 in test barrel, item P40HST1S
Federal Personal Defense Punch200 gr Jacketed Hollow Point, 1,100 fps, 537 ft-lb, 5 in test barrel, item PD10P1
200 gr Jacketed Hollow Point, 1,100 fps, 537 ft-lb, test barrel not listed, item PD10P1G
165 gr Jacketed Hollow Point, 1,130 fps, 468 ft-lb, 4 in test barrel, item PD40P1
165 gr Jacketed Hollow Point, 1,130 fps, 468 ft-lb, test barrel not listed, item PD40P1G
Federal Train + Protect180 gr Versatile Hollow Point, 1,175 fps, 552 ft-lb, test barrel not listed, item TP10VHP1180 gr Jacketed Hollow Point, 1,000 fps, 400 ft-lb, 4 in test barrel, item TP40VHP1
Speer Gold Dot Handgun Personal Protection200 gr Gold Dot Hollow Point, 1,100 fps, 537 ft-lb, 5 in test barrel, item 54000GD180 gr Gold Dot Hollow Point, 1,025 fps, 420 ft-lb, 4 in test barrel, item 23962GD
165 gr Gold Dot Hollow Point, 1,150 fps, 484 ft-lb, 4 in test barrel, item 23970GD
Remington Golden Saber Bonded180 gr Bonded Brass Jacketed Hollow Point, 1,150 fps, 529 ft-lb, test barrel not listed, item R21368180 gr Bonded Brass Jacketed Hollow Point, 1,015 fps, 412 ft-lb, test barrel not listed, item 29365
165 gr Bonded Brass Jacketed Hollow Point, 1,150 fps, 484 ft-lb, test barrel not listed, item 29363
Remington Golden Saber Defense180 gr Brass Jacketed Hollow Point, 1,150 fps, 529 ft-lb, test barrel not listed, item R21369180 gr Brass Jacketed Hollow Point, 1,015 fps, 412 ft-lb, test barrel not listed, item 27608
165 gr Brass Jacketed Hollow Point, 1,150 fps, 484 ft-lb, test barrel not listed, item 27607
Remington Golden Saber Defense Compact180 gr Brass Jacketed Hollow Point, 1,150 fps, 529 ft-lb, test barrel not listed, item R21370180 gr Brass Jacketed Hollow Point, 785 fps, 246 ft-lb, test barrel not listed, item 27618
CCI Blazer Brass HP180 gr Jacketed Hollow Point, 1,175 fps, 552 ft-lb, 5 in test barrel, item 5251180 gr Jacketed Hollow Point, 1,015 fps, 412 ft-lb, test barrel not listed, item 5241
Federal Solid Core200 gr Solid, 1,200 fps, 639 ft-lb, 5 in test barrel, item P10SHC1200 gr Solid, 1,000 fps, 444 ft-lb, 4 in test barrel, item P40SHC1
Hornady Critical Duty175 gr FlexLock® Critical Duty®, 1,160 fps, 523 ft-lb, 5 in test barrel, item 91256175 gr FlexLock® Critical Duty®, 1,010 fps, 396 ft-lb, 4 in test barrel, item 91376
Hornady Custom180 gr XTP®, 1,275 fps, 650 ft-lb, 5 in test barrel, item 9126
155 gr HP XTP®, 1,410 fps, 684 ft-lb, 5 in test barrel, item 9122
155 gr XTP®, 1,180 fps, 479 ft-lb, 4 in test barrel, item 9132
Hornady Handgun Hunter135 gr MonoFlex® Handgun Hunter®, 1,315 fps, 518 ft-lb, 5 in test barrel, item 91267135 gr MonoFlex ® Handgun Hunter ®, 1,130 fps, 383 ft-lb, 4 in test barrel, item 91361
Federal American Eagle Handgun180 gr Full Metal Jacket, 1,030 fps, 424 ft-lb, 5 in test barrel, item AE10A180 gr Full Metal Jacket, 1,000 fps, 400 ft-lb, 4 in test barrel, item AE40R1
180 gr Full Metal Jacket, 1,000 fps, 400 ft-lb, 4 in test barrel, item AE40R100
165 gr Full Metal Jacket, 1,130 fps, 468 ft-lb, 4 in test barrel, item AE40R3
155 gr Full Metal Jacket, 1,160 fps, 463 ft-lb, 4 in test barrel, item AE40R2
Federal Champion Training180 gr Full Metal Jacket, 1,200 fps, 575 ft-lb, test barrel not listed, item WM5221
180 gr Full Metal Jacket, 1,200 fps, 575 ft-lb, test barrel not listed, item WM52212
180 gr Full Metal Jacket, 1,000 fps, 400 ft-lb, 4 in test barrel, item WM5223
180 gr Full Metal Jacket, 1,000 fps, 400 ft-lb, 4 in test barrel, item WM52232
Federal Syntech Range205 gr Total Synthetic Jacket, 1,150 fps, 602 ft-lb, 5 in test barrel, item AE10SJ1165 gr Syntech Jacket Flat Nose, 1,060 fps, 412 ft-lb, 4 in test barrel, item AE40SJ1
Remington UMC Handgun180 gr Full Metal Jacket, 1,150 fps, 529 ft-lb, test barrel not listed, item 23706180 gr Full Metal Jacket, 990 fps, 392 ft-lb, test barrel not listed, item 23647
180 gr Full Metal Jacket, 990 fps, 392 ft-lb, test barrel not listed, item 23742
180 gr Full Metal Jacket, 990 fps, 392 ft-lb, test barrel not listed, item 23779
180 gr Full Metal Jacket, 990 fps, 392 ft-lb, test barrel not listed, item 23795
180 gr Full Metal Jacket, 990 fps, 392 ft-lb, test barrel not listed, item 23976
180 gr Jacketed Hollow Point, 1,015 fps, 412 ft-lb, test barrel not listed, item 23687
180 gr Jacketed Hollow Point, 1,015 fps, 412 ft-lb, test barrel not listed, item 23694
165 gr Full Metal Jacket, 1,150 fps, 484 ft-lb, test barrel not listed, item 23746
165 gr Full Metal Jacket, 1,150 fps, 484 ft-lb, test barrel not listed, item 23773
CCI Blazer Aluminum200 gr Full Metal Jacket, 1,050 fps, 490 ft-lb, test barrel not listed, item 3597165 gr Full Metal Jacket, 1,100 fps, 443 ft-lb, test barrel not listed, item 3589
CCI Blazer Brass180 gr Full Metal Jacket, 1,200 fps, 575 ft-lb, test barrel not listed, item 5221180 gr Full Metal Jacket, 985 fps, 388 ft-lb, test barrel not listed, item 5220
165 gr Full Metal Jacket, 1,050 fps, 404 ft-lb, test barrel not listed, item 5210

What the sources say when you choose

These are points taken from the figures above, each with the page it rests on. They are not recommendations or scores.

Not yet verified

See the full tables in our 10mm Auto ammo guide and .40 S&W ammo guide, the new ammo of 2026, all ammo releases and 9mm vs 10mm Auto, .45 ACP vs 10mm Auto, all comparisons.

Frequently asked questions

What is the SAAMI maximum pressure for 10mm Auto and .40 SandW?
SAAMI lists 37,500 psi for 10mm Auto and 35,000 psi for .40 SandW, both measured by transducer, in ANSI/SAAMI Z299.3-2022.
Do 10mm Auto and .40 SandW use the same bullet diameter?
SAAMI lists .4005 in (−.0030) for 10mm Auto and .4005 in (−.0030) for .40 SandW in ANSI/SAAMI Z299.3-2022.
Which test barrel do the makers list?
It varies by maker and load. SAAMI's velocity test barrel is 5.000 in for 10mm Auto and 4.000 in for .40 SandW. Our tables show the barrel each maker page lists next to every velocity, and some pages list none.
Which is better, 10mm Auto or .40 SandW?
We don't rate or rank cartridges. This page copies maker-page figures and SAAMI specs side by side, and it does not cover price, recoil or hands-on results.
Where do these numbers come from?
From our own ammo guides (10mm Auto ammo and .40 S&W ammo), which copy maker product pages, and from SAAMI Z299.3-2022.

Sources

  1. SAAMI: ANSI/SAAMI Z299.3-2022 centerfire pistol and revolver standard (checked Nov. 4, 2026)
  2. Federal: Federal Personal Defense HST 10mm Auto 200 gr HST Jacketed Hollow Point, item P10HST1S (checked Nov. 4, 2026)
  3. Federal: Federal Personal Defense HST 40 S&W 180 gr HST Jacketed Hollow Point, item P40HST1S (checked Nov. 4, 2026)
  4. Federal: Federal Personal Defense Punch 10mm Auto 200 gr Jacketed Hollow Point, item PD10P1 (checked Nov. 4, 2026)
  5. Federal: Federal Personal Defense Punch 10mm Auto 200 gr Jacketed Hollow Point, item PD10P1G (checked Nov. 4, 2026)
  6. Federal: Federal Personal Defense Punch 40 S&W 165 gr Jacketed Hollow Point, item PD40P1 (checked Nov. 4, 2026)
  7. Federal: Federal Personal Defense Punch 40 S&W 165 gr Jacketed Hollow Point, item PD40P1G (checked Nov. 4, 2026)
  8. Federal: Federal Train + Protect 10mm Auto 180 gr Versatile Hollow Point, item TP10VHP1 (checked Nov. 4, 2026)
  9. Federal: Federal Train + Protect 40 S&W 180 gr Jacketed Hollow Point, item TP40VHP1 (checked Nov. 4, 2026)
  10. Speer: Speer Gold Dot Handgun Personal Protection 10mm Auto 200 gr Gold Dot Hollow Point, item 54000GD (checked Nov. 4, 2026)
  11. Speer: Speer Gold Dot Handgun Personal Protection 40 S&W 180 gr Gold Dot Hollow Point, item 23962GD (checked Nov. 4, 2026)
  12. Speer: Speer Gold Dot Handgun Personal Protection 40 S&W 165 gr Gold Dot Hollow Point, item 23970GD (checked Nov. 4, 2026)
  13. Remington: Remington Golden Saber Bonded 10mm Auto 180 gr Bonded Brass Jacketed Hollow Point, item R21368 (checked Nov. 4, 2026)
  14. Remington: Remington Golden Saber Bonded 40 S&W 180 gr Bonded Brass Jacketed Hollow Point, item 29365 (checked Nov. 4, 2026)
  15. Remington: Remington Golden Saber Bonded 40 S&W 165 gr Bonded Brass Jacketed Hollow Point, item 29363 (checked Nov. 4, 2026)
  16. Remington: Remington Golden Saber Defense 10mm Auto 180 gr Brass Jacketed Hollow Point, item R21369 (checked Nov. 4, 2026)
  17. Remington: Remington Golden Saber Defense 40 S&W 180 gr Brass Jacketed Hollow Point, item 27608 (checked Nov. 4, 2026)
  18. Remington: Remington Golden Saber Defense 40 S&W 165 gr Brass Jacketed Hollow Point, item 27607 (checked Nov. 4, 2026)
  19. Remington: Remington Golden Saber Defense Compact 10mm Auto 180 gr Brass Jacketed Hollow Point, item R21370 (checked Nov. 4, 2026)
  20. Remington: Remington Golden Saber Defense Compact 40 S&W 180 gr Brass Jacketed Hollow Point, item 27618 (checked Nov. 4, 2026)
  21. CCI: CCI Blazer Brass HP 10mm Auto 180 gr Jacketed Hollow Point, item 5251 (checked Nov. 4, 2026)
  22. CCI: CCI Blazer Brass HP 40 S&W 180 gr Jacketed Hollow Point, item 5241 (checked Nov. 4, 2026)
  23. Federal: Federal Solid Core 10mm Auto 200 gr Solid, item P10SHC1 (checked Nov. 4, 2026)
  24. Federal: Federal Solid Core 40 S&W 200 gr Solid, item P40SHC1 (checked Nov. 4, 2026)
  25. Hornady: Hornady Critical Duty 10mm Auto 175 gr FlexLock® Critical Duty®, item 91256 (checked Nov. 4, 2026)
  26. Hornady: Hornady Critical Duty 40 S&W 175 gr FlexLock® Critical Duty®, item 91376 (checked Nov. 4, 2026)
  27. Hornady: Hornady Custom 10mm Auto 180 gr XTP®, item 9126 (checked Nov. 4, 2026)
  28. Hornady: Hornady Custom 10mm Auto 155 gr HP XTP®, item 9122 (checked Nov. 4, 2026)
  29. Hornady: Hornady Custom 40 S&W 155 gr XTP®, item 9132 (checked Nov. 4, 2026)
  30. Hornady: Hornady Handgun Hunter 10mm Auto 135 gr MonoFlex® Handgun Hunter®, item 91267 (checked Nov. 4, 2026)
  31. Hornady: Hornady Handgun Hunter 40 S&W 135 gr MonoFlex ® Handgun Hunter ®, item 91361 (checked Nov. 4, 2026)
  32. Federal: Federal American Eagle Handgun 10mm Auto 180 gr Full Metal Jacket, item AE10A (checked Nov. 4, 2026)
  33. Federal: Federal American Eagle Handgun 40 S&W 180 gr Full Metal Jacket, item AE40R1 (checked Nov. 4, 2026)
  34. Federal: Federal American Eagle Handgun 40 S&W 180 gr Full Metal Jacket, item AE40R100 (checked Nov. 4, 2026)
  35. Federal: Federal American Eagle Handgun 40 S&W 165 gr Full Metal Jacket, item AE40R3 (checked Nov. 4, 2026)
  36. Federal: Federal American Eagle Handgun 40 S&W 155 gr Full Metal Jacket, item AE40R2 (checked Nov. 4, 2026)
  37. Federal: Federal Champion Training 10mm Auto 180 gr Full Metal Jacket, item WM5221 (checked Nov. 4, 2026)
  38. Federal: Federal Champion Training 10mm Auto 180 gr Full Metal Jacket, item WM52212 (checked Nov. 4, 2026)
  39. Federal: Federal Champion Training 40 S&W 180 gr Full Metal Jacket, item WM5223 (checked Nov. 4, 2026)
  40. Federal: Federal Champion Training 40 S&W 180 gr Full Metal Jacket, item WM52232 (checked Nov. 4, 2026)
  41. Federal: Federal Syntech Range 10mm Auto 205 gr Total Synthetic Jacket, item AE10SJ1 (checked Nov. 4, 2026)
  42. Federal: Federal Syntech Range 40 S&W 165 gr Syntech Jacket Flat Nose, item AE40SJ1 (checked Nov. 4, 2026)
  43. Remington: Remington UMC Handgun 10mm Auto 180 gr Full Metal Jacket, item 23706 (checked Nov. 4, 2026)
  44. Remington: Remington UMC Handgun 40 S&W 180 gr Full Metal Jacket, item 23647 (checked Nov. 4, 2026)
  45. Remington: Remington UMC Handgun 40 S&W 180 gr Full Metal Jacket, item 23742 (checked Nov. 4, 2026)
  46. Remington: Remington UMC Handgun 40 S&W 180 gr Full Metal Jacket, item 23779 (checked Nov. 4, 2026)
  47. Remington: Remington UMC Handgun 40 S&W 180 gr Full Metal Jacket, item 23795 (checked Nov. 4, 2026)
  48. Remington: Remington UMC Handgun 40 S&W 180 gr Full Metal Jacket, item 23976 (checked Nov. 4, 2026)
  49. Remington: Remington UMC Handgun 40 S&W 180 gr Jacketed Hollow Point, item 23687 (checked Nov. 4, 2026)
  50. Remington: Remington UMC Handgun 40 S&W 180 gr Jacketed Hollow Point, item 23694 (checked Nov. 4, 2026)
  51. Remington: Remington UMC Handgun 40 S&W 165 gr Full Metal Jacket, item 23746 (checked Nov. 4, 2026)
  52. Remington: Remington UMC Handgun 40 S&W 165 gr Full Metal Jacket, item 23773 (checked Nov. 4, 2026)
  53. CCI: CCI Blazer Aluminum 10mm Auto 200 gr Full Metal Jacket, item 3597 (checked Nov. 4, 2026)
  54. CCI: CCI Blazer Aluminum 40 S&W 165 gr Full Metal Jacket, item 3589 (checked Nov. 4, 2026)
  55. CCI: CCI Blazer Brass 10mm Auto 180 gr Full Metal Jacket, item 5221 (checked Nov. 4, 2026)
  56. CCI: CCI Blazer Brass 40 S&W 180 gr Full Metal Jacket, item 5220 (checked Nov. 4, 2026)
  57. CCI: CCI Blazer Brass 40 S&W 165 gr Full Metal Jacket, item 5210 (checked Nov. 4, 2026)
  58. Federal: Federal American Eagle Indoor Range Training Lead Free 40 S&W 120 gr Lead Free IRT, item AE40LF1 (checked Nov. 4, 2026)
  59. Federal: Federal Syntech Action Pistol 40 S&W 205 gr Syntech Jacket Flat Nose, item AE40SJAP1 (checked Nov. 4, 2026)

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