What is the .270 Winchester?

The .270 Winchester is a factory rifle cartridge in the Winchester Repeating Arms Company cartridges family, introduced in 1925.

What bullet diameter does the .270 Winchester use?

The .270 Winchester uses a bullet diameter of 0.277 inches.

What is the case type of the .270 Winchester?

The .270 Winchester has a Rimless, Bottlenecked case type.

What primer does the .270 Winchester use?

The .270 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 .270 Winchester and other related cartridges. Browse the full family on OpenCartridge.

.270 Winchester

Rifle Factory

Family	Winchester Repeating Arms Company cartridges
Year	1925
Case Type	Rimless, Bottlenecked
Primer	Large Rifle (.210")

Dimensions (inches)

Bullet Ø	0.277
Case Length	2.54
Neck Ø	0.307
Shoulder Ø	0.44
Base Ø	0.468
Rim Ø	0.473
Total Length	3.28

SAAMI Pressure

MAP (PSI)	65,000
MAP (CUP)	52,000

Parent Cases

.30-06

Muzzle Velocity across 16 loads: Avg 2994 fps Min 2769 fps Max 3319 fps

Community Load Data

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Bullet Type

Powder (name or brand)

Min MV (fps)

Max MV (fps)

⚠ MAX LOAD — Verify before loading

150.00gr Nosler Soft Point (SP) — 55.30gr

by imported_data · Aug 12, 2026

2860 fps

3.3000 OAL"

Remington Case

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140.00gr Hornady Soft Point (SP) — 57.20gr

by imported_data · Aug 12, 2026

2973 fps

3.2100 OAL"

Remington Case

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130.00gr Hornady Round Nose (RN) — 56.70gr

by imported_data · Aug 12, 2026

3046 fps

3.2100 OAL"

Remington Case

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130.00gr Hornady Soft Point (SP) — 58.50gr

by imported_data · Aug 12, 2026

3097 fps

3.2100 OAL"

Remington Case

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140.00gr Hornady Soft Point (SP) — 45.50gr

by imported_data · Aug 12, 2026

2850 fps

3.2100 OAL"

Remington Case

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130.00gr Hornady Round Nose (RN) — 45.10gr

by imported_data · Aug 12, 2026

2922 fps

3.2100 OAL"

Remington Case

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130.00gr Hornady Soft Point (SP) — 47.00gr

by imported_data · Aug 12, 2026

2996 fps

3.2100 OAL"

Remington Case

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120.00gr Hornady Soft Point (SP) — 47.80gr

by imported_data · Aug 12, 2026

3124 fps

3.1650 OAL"

Remington Case

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110.00gr Hornady Round Nose (RN) — 50.00gr

by imported_data · Aug 12, 2026

3319 fps

3.1650 OAL"

Remington Case

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100.00gr Hornady Round Nose (RN) — 48.40gr

by imported_data · Aug 12, 2026

3283 fps

3.1300 OAL"

Remington Case

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150.00gr Nosler Soft Point (SP) — 49.10gr

by imported_data · Aug 12, 2026

2787 fps

3.3000 OAL"

Remington Case

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150.00gr Hornady Soft Point (SP) — 48.50gr

by imported_data · Aug 12, 2026

2769 fps

3.2100 OAL"

Remington Case

PRO

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140.00gr Hornady Soft Point (SP) — 50.00gr

by imported_data · Aug 12, 2026

2883 fps

3.2100 OAL"

Remington Case

PRO

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130.00gr Hornady Round Nose (RN) — 50.50gr

by imported_data · Aug 12, 2026

2994 fps

3.2100 OAL"

Remington Case

PRO

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130.00gr Hornady Round Nose (RN) — 50.50gr

by imported_data · Aug 12, 2026

2987 fps

3.2100 OAL"

Remington Case

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130.00gr Hornady Soft Point (SP) — 51.30gr

by imported_data · Aug 12, 2026

3014 fps

3.2100 OAL"

Remington Case

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