What is the .243 Winchester?

The .243 Winchester is a factory rifle cartridge in the Winchester Repeating Arms Company cartridges family, introduced in 1955.

What bullet diameter does the .243 Winchester use?

The .243 Winchester uses a bullet diameter of 0.243 inches.

What is the case type of the .243 Winchester?

The .243 Winchester has a Rimless, Bottlenecked case type.

What primer does the .243 Winchester use?

The .243 Winchester uses a Large Rifle (.210") primer.

What cartridges are in the Winchester Repeating Arms Company cartridges family?

The Winchester Repeating Arms Company cartridges family includes the .243 Winchester and other related cartridges. Browse the full family on OpenCartridge.

.243 Winchester

Rifle Factory

Family	Winchester Repeating Arms Company cartridges
Year	1955
Case Type	Rimless, Bottlenecked
Primer	Large Rifle (.210")

Dimensions (inches)

Bullet Ø	0.243
Case Length	2.05
Neck Ø	0.276
Shoulder Ø	0.454
Base Ø	0.47
Rim Ø	0.47
Total Length	2.71

SAAMI Pressure

MAP (PSI)	60,000
MAP (CUP)	52,000

Parent Cases

.308 Winchester

References

Ammo Ency. 6th Ed. p. 621

Muzzle Velocity across 49 loads: Avg 3112 fps Min 2713 fps Max 3979 fps

Community Load Data

Submit Load

Filter Loads

Bullet Type

Powder (name or brand)

Min MV (fps)

Max MV (fps)

⚠ MAX LOAD — Verify before loading

75.00gr Hornady Round Nose (RN) — 39.50gr

by imported_data · Aug 12, 2026

3367 fps

2.6000 OAL"

N/A Case

⚠ MAX LOAD — Verify before loading

90.00gr Nosler Other — 35.00gr

by imported_data · Aug 12, 2026

2965 fps

2.7350 OAL"

N/A Case

⚠ MAX LOAD — Verify before loading

75.00gr Hornady Round Nose (RN) — 36.00gr

by imported_data · Aug 12, 2026

3324 fps

2.6100 OAL"

Starline Case

PRO

Unlock with Pro

Upgrade to Pro

⚠ MAX LOAD — Verify before loading

65.00gr Hornady Round Nose (RN) — 37.00gr

by imported_data · Aug 12, 2026

3556 fps

2.6000 OAL"

Starline Case

PRO

Unlock with Pro

Upgrade to Pro

⚠ MAX LOAD — Verify before loading

58.00gr Hornady Round Nose (RN) — 39.40gr

by imported_data · Aug 12, 2026

3775 fps

2.6000 OAL"

Starline Case

PRO

Unlock with Pro

Upgrade to Pro

⚠ MAX LOAD — Verify before loading

115.00gr DTAC Other — 39.50gr

by imported_data · Aug 12, 2026

2762 fps

2.8100 OAL"

Federal Case

PRO

Unlock with Pro

Upgrade to Pro

⚠ MAX LOAD — Verify before loading

107.00gr Sierra Match — 41.50gr

by imported_data · Aug 12, 2026

2855 fps

2.8000 OAL"

Federal Case

PRO

Unlock with Pro

Upgrade to Pro

⚠ MAX LOAD — Verify before loading

105.00gr Nosler Match — 41.60gr

by imported_data · Aug 12, 2026

2893 fps

2.8000 OAL"

Federal Case

PRO

Unlock with Pro

Upgrade to Pro

⚠ MAX LOAD — Verify before loading

105.00gr Lapua Match — 40.80gr

by imported_data · Aug 12, 2026

2885 fps

2.7750 OAL"

Federal Case

PRO

Unlock with Pro

Upgrade to Pro

⚠ MAX LOAD — Verify before loading

105.00gr Hornady Boat Tail Hollow Point (BTHP) — 41.20gr

by imported_data · Aug 12, 2026

2881 fps

2.7500 OAL"

Federal Case

PRO

Unlock with Pro

Upgrade to Pro

⚠ MAX LOAD — Verify before loading

105.00gr Berger Other — 42.00gr

by imported_data · Aug 12, 2026

2874 fps

2.8250 OAL"

Federal Case

PRO

Unlock with Pro

Upgrade to Pro

⚠ MAX LOAD — Verify before loading

105.00gr Berger Boat Tail (BT) — 42.30gr

by imported_data · Aug 12, 2026

2910 fps

2.7500 OAL"

Federal Case

PRO

Unlock with Pro

Upgrade to Pro

⚠ MAX LOAD — Verify before loading

100.00gr Sierra Soft Point (SP) — 42.00gr

by imported_data · Aug 12, 2026

2961 fps

2.6000 OAL"

Federal Case

PRO

Unlock with Pro

Upgrade to Pro

⚠ MAX LOAD — Verify before loading

90.00gr Lapua Match — 42.00gr

by imported_data · Aug 12, 2026

3090 fps

2.8000 OAL"

Federal Case

PRO

Unlock with Pro

Upgrade to Pro

⚠ MAX LOAD — Verify before loading

77.00gr Lapua Hollow Point (HP) — 45.80gr

by imported_data · Aug 12, 2026

3178 fps

2.7250 OAL"

Starline Case

PRO

Unlock with Pro

Upgrade to Pro

⚠ MAX LOAD — Verify before loading

95.00gr Soft Point (SP) — 41.70gr

by imported_data · Aug 12, 2026

2854 fps

2.6378 OAL"

Sellier & Bellot Case

PRO

Unlock with Pro

Upgrade to Pro

⚠ MAX LOAD — Verify before loading

95.00gr Soft Point (SP) — 35.50gr

by imported_data · Aug 12, 2026

2788 fps

2.6378 OAL"

Sellier & Bellot Case

PRO

Unlock with Pro

Upgrade to Pro

⚠ MAX LOAD — Verify before loading

107.00gr Sierra Match — 34.20gr

by imported_data · Aug 12, 2026

2792 fps

2.8000 OAL"

Federal Case

PRO

Unlock with Pro

Upgrade to Pro

⚠ MAX LOAD — Verify before loading

105.00gr Lapua Match — 33.80gr

by imported_data · Aug 12, 2026

2815 fps

2.7750 OAL"

Federal Case

PRO

Unlock with Pro

Upgrade to Pro

⚠ MAX LOAD — Verify before loading

105.00gr Hornady Boat Tail Hollow Point (BTHP) — 34.30gr

by imported_data · Aug 12, 2026

2825 fps

2.7500 OAL"

Federal Case

PRO

Unlock with Pro

Upgrade to Pro

⚠ MAX LOAD — Verify before loading

105.00gr Berger Other — 34.80gr

by imported_data · Aug 12, 2026

2864 fps

2.8250 OAL"

Federal Case

PRO

Unlock with Pro

Upgrade to Pro

⚠ MAX LOAD — Verify before loading

105.00gr Berger Boat Tail (BT) — 34.30gr

by imported_data · Aug 12, 2026

2802 fps

2.7500 OAL"

Federal Case

PRO

Unlock with Pro

Upgrade to Pro

⚠ MAX LOAD — Verify before loading

100.00gr Sierra Soft Point (SP) — 34.50gr

by imported_data · Aug 12, 2026

2865 fps

2.6000 OAL"

Federal Case

PRO

Unlock with Pro

Upgrade to Pro

⚠ MAX LOAD — Verify before loading

90.00gr Lapua Match — 35.50gr

by imported_data · Aug 12, 2026

3045 fps

2.8000 OAL"

Federal Case

PRO

Unlock with Pro

Upgrade to Pro

⚠ MAX LOAD — Verify before loading

85.00gr Sierra Boat Tail Hollow Point (BTHP) — 36.50gr

by imported_data · Aug 12, 2026

3123 fps

2.6100 OAL"

Federal Case

PRO

Unlock with Pro

Upgrade to Pro

⚠ MAX LOAD — Verify before loading

75.00gr Hornady Round Nose (RN) — 38.60gr

by imported_data · Aug 12, 2026

3361 fps

2.6000 OAL"

Starline Case

PRO

Unlock with Pro

Upgrade to Pro

⚠ MAX LOAD — Verify before loading

65.00gr Hornady Round Nose (RN) — 40.50gr

by imported_data · Aug 12, 2026

3611 fps

2.6000 OAL"

Starline Case

PRO

Unlock with Pro

Upgrade to Pro

⚠ MAX LOAD — Verify before loading

58.00gr Hornady Round Nose (RN) — 42.00gr

by imported_data · Aug 12, 2026

3763 fps

2.6000 OAL"

Starline Case

PRO

Unlock with Pro

Upgrade to Pro

⚠ MAX LOAD — Verify before loading

105.00gr Berger Other — 34.80gr

by imported_data · Aug 12, 2026

2895 fps

2.8250 OAL"

Starline Case

PRO

Unlock with Pro

Upgrade to Pro

⚠ MAX LOAD — Verify before loading

87.00gr Hornady Round Nose (RN) — 36.20gr

by imported_data · Aug 12, 2026

3068 fps

2.6700 OAL"

Starline Case

PRO

Unlock with Pro

Upgrade to Pro

⚠ MAX LOAD — Verify before loading

85.00gr Sierra Other — 37.60gr

by imported_data · Aug 12, 2026

3112 fps

2.5750 OAL"

Starline Case

PRO

Unlock with Pro

Upgrade to Pro

⚠ MAX LOAD — Verify before loading

75.00gr Hornady Round Nose (RN) — 38.70gr

by imported_data · Aug 12, 2026

3420 fps

2.6100 OAL"

Starline Case

PRO

Unlock with Pro

Upgrade to Pro

⚠ MAX LOAD — Verify before loading

65.00gr Hornady Round Nose (RN) — 41.40gr

by imported_data · Aug 12, 2026

3664 fps

2.6000 OAL"

Starline Case

PRO

Unlock with Pro

Upgrade to Pro

⚠ MAX LOAD — Verify before loading

60.00gr Sierra Hollow Point (HP) — 43.00gr

by imported_data · Aug 12, 2026

3807 fps

2.5800 OAL"

Starline Case

PRO

Unlock with Pro

Upgrade to Pro

⚠ MAX LOAD — Verify before loading

55.00gr Sierra Other — 44.80gr

by imported_data · Aug 12, 2026

3979 fps

2.7000 OAL"

Starline Case

PRO

Unlock with Pro

Upgrade to Pro

⚠ MAX LOAD — Verify before loading

58.00gr Hornady Round Nose (RN) — 42.60gr

by imported_data · Aug 12, 2026

3851 fps

2.6000 OAL"

Starline Case

PRO

Unlock with Pro

Upgrade to Pro

⚠ MAX LOAD — Verify before loading

115.00gr DTAC Other — 35.80gr

by imported_data · Aug 12, 2026

2713 fps

2.8100 OAL"

Federal Case

PRO

Unlock with Pro

Upgrade to Pro

⚠ MAX LOAD — Verify before loading

107.00gr Sierra Match — 37.50gr

by imported_data · Aug 12, 2026

2820 fps

2.8000 OAL"

Federal Case

PRO

Unlock with Pro

Upgrade to Pro

⚠ MAX LOAD — Verify before loading

105.00gr Nosler Match — 37.20gr

by imported_data · Aug 12, 2026

2843 fps

2.8000 OAL"

Federal Case

PRO

Unlock with Pro

Upgrade to Pro

⚠ MAX LOAD — Verify before loading

105.00gr Lapua Match — 36.50gr

by imported_data · Aug 12, 2026

2820 fps

2.7750 OAL"

Federal Case

PRO

Unlock with Pro

Upgrade to Pro

⚠ MAX LOAD — Verify before loading

105.00gr Berger Other — 37.30gr

by imported_data · Aug 12, 2026

2854 fps

2.8250 OAL"

Federal Case

PRO

Unlock with Pro

Upgrade to Pro

⚠ MAX LOAD — Verify before loading

105.00gr Hornady Boat Tail Hollow Point (BTHP) — 37.00gr

by imported_data · Aug 12, 2026

2835 fps

2.7500 OAL"

Federal Case

PRO

Unlock with Pro

Upgrade to Pro

⚠ MAX LOAD — Verify before loading

105.00gr Berger Boat Tail (BT) — 37.60gr

by imported_data · Aug 12, 2026

2839 fps

2.7500 OAL"

Federal Case

PRO

Unlock with Pro

Upgrade to Pro

⚠ MAX LOAD — Verify before loading

100.00gr Sierra Soft Point (SP) — 37.00gr

by imported_data · Aug 12, 2026

2873 fps

2.6000 OAL"

Federal Case

PRO

Unlock with Pro

Upgrade to Pro

⚠ MAX LOAD — Verify before loading

87.00gr Hornady Round Nose (RN) — 39.20gr

by imported_data · Aug 12, 2026

3030 fps

2.6750 OAL"

Federal Case

PRO

Unlock with Pro

Upgrade to Pro

⚠ MAX LOAD — Verify before loading

100.00gr Sierra Soft Point (SP) — 28.50gr

by imported_data · Aug 12, 2026

2803 fps

2.6000 OAL"

Winchester Case

PRO

Unlock with Pro

Upgrade to Pro

⚠ MAX LOAD — Verify before loading

75.00gr Hornady Round Nose (RN) — 34.00gr

by imported_data · Aug 12, 2026

3287 fps

2.6100 OAL"

Starline Case

PRO

Unlock with Pro

Upgrade to Pro

⚠ MAX LOAD — Verify before loading

65.00gr Hornady Round Nose (RN) — 36.00gr

by imported_data · Aug 12, 2026

3503 fps

2.6000 OAL"

Starline Case

PRO

Unlock with Pro

Upgrade to Pro

⚠ MAX LOAD — Verify before loading

58.00gr Hornady Round Nose (RN) — 36.50gr

by imported_data · Aug 12, 2026

3688 fps

2.6000 OAL"

Starline Case

PRO

Unlock with Pro

Upgrade to Pro

PRO

47 more loads hidden

Free accounts see the top 2 community loads. Upgrade to see all 49 loads, compare up to 5 in the ballistics calculator, and more.

Upgrade to Pro — See All Loads

No discussion yet. Be the first to start a conversation about .243 Winchester.

More from the Winchester Repeating Arms Company cartridges