Small-bore refers to calibers with a diameter of .32 inches or smaller.[1] It may also refer to small-bore rifle competition. The medium-bore refers to calibers with a diameter between .33 inches up to .39 inches and large-bore refers to calibers with a diameter of .40 inches or larger.[2] Miniature bore refers historically to calibers of .22 inches or smaller.

There is much variance in the use of the term small-bore which over the years has changed considerably with anything under .577 caliber considered small-bore prior to the mid-19th century.[3]

Small-bore competition

Small-bore competition often refers to shooting competitions conducted with .22 Rimfire target rifles.[4][5]

See also

References

  1. ↑ "Medium Bore Musings".
  2. ↑ "Big Bore Rifle Cartridges".
  3. ↑ "Historic small-bore Enfield rifles, training rifles and BSA rifles; plus league competitions".
  4. ↑ "SmallBoreRifle - What is Smallbore Rifle Shooting?".
  5. ↑ http://compete.nra.org/documents/pdf/compete/RuleBooks/SBR/sbr-book.pdf Small-bore rifle NRA rule book
  • Historic small-bore Enfield, BSA and other Service, Training and Target rifles reference pages, with league competitions for such rifles
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