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.218 Bee

Introduced 1937WinchesterCIP standard

Dimensions and pressure

Generated from the schema, like every specification table on this site, so a figure recorded on this entry cannot be missing from the table.

Identity
Designed by
Winchester
Introduced
1937
Production
not recorded
Standards body
C.I.P.
Case type
Rimmed
Case shape
Bottleneck
Dimensions
Bullet diameter
5.7 mm0.2244 insource

C.I.P. G1, maximum bullet diameter.

Bore diameter
not recorded
Case length
34.16 mm1.345 insource

C.I.P. L3, maximum case length.

Overall length
42.67 mm1.680 insource

C.I.P. L6, maximum cartridge overall length.

Rim diameter
10.36 mm0.4079 insource

C.I.P. R1.

Neck diameter
6.15 mm0.2421 insource

C.I.P. H2.

Base diameter
8.87 mm0.3492 insource

C.I.P. P1.

Pressure
Maximum pressure
320 MPa46,412 psisource

C.I.P. Pmax 3200 bar; 1 bar = 0.1 MPa exactly.

Pressure standard
C.I.P.

SAAMI and C.I.P. measure pressure differently and their figures are not interchangeable, which is why the body is always named beside the figure.

Loads

Velocity is recorded per barrel length as published. A gun page interpolates between these points and never projects beyond them.

Hornady 45 gr HP

Hornady

Bullet mass
2.916 g45.00 grsource

Published as 45 gr on Hornady's own product page.

Cartridge mass
not recorded
Bullet type
HP (InterLock)
G1 BC
not recorded
G7 BC
not recorded
Sourced velocity by barrel length
BarrelVelocity
609.6 mm24.00 in838.2 m/s2,750 fps

Chambered in

Computed from every entry that lists this cartridge. Nothing here is hand-maintained.

No entry on the site is chambered in it yet.

Detail

Winchester introduced the .218 Bee in 1937 by necking the older .32-20 Winchester case down to take a .224-inch bullet, producing a small rimmed, bottlenecked round for single-shot and lever-action rifles built to handle a light, fast varmint cartridge rather than the pistol-length rounds those actions had traditionally fired. It arrived alongside Winchester’s Model 65 lever rifle and was later chambered in the company’s bolt-action Model 43, giving hunters a cartridge built specifically to shoot small game and varmints without the report or recoil of a full-size rifle round.

The Bee’s rimmed case suited the tubular-magazine and single-shot actions available when it was introduced, at the cost of the smoother, box-magazine feeding that a rimless case like the .222 Remington would later offer purpose-built bolt rifles. That competition, arriving in the 1950s, left the Bee as a niche cartridge rather than a mainstream one; it survives today mainly through handloaders and a small range of factory ammunition rather than as a widely stocked commercial round.

Case and pressure figures here are transcribed from the current C.I.P. datasheet and are verified. Hornady’s own product page for its 45-grain hollow-point load states both a muzzle velocity and the 24-inch test barrel it was measured from, which is what lets this entry carry a sourced velocity point — most of the loads that appear in reloading tables for this cartridge publish a velocity with no barrel length at all, and those are left out rather than recorded as something they are not. No further factory loads with a stated test barrel were found.

References

  1. .218 Bee · 1316856743 · read 2026-09-01
  2. C.I.P. TDCC datasheet — 218 Bee · 2002-05-15 · read 2026-09-01
  3. 218 Bee 45 gr HP · read 2026-09-01

Last verified 2026-09-01 · review status: agent-populated