Published: 2026 | Last updated: May 2026
Winchester 748 is a medium-fast-burning, double-base spherical powder from Winchester (distributed by Hodgdon Powder Company), one of the most historically documented ball powders in North American reloading. Originally developed for military applications, it became a commercial standard for medium-capacity rifle cartridges where ball geometry metering efficiency, high bulk density, and double-base energy combine to enable practical high-volume production loading.
The powder’s burn rate positions it slightly faster than Hodgdon BL-C(2) and at a comparable rate to Ramshot TAC and Accurate 2460, covering 308 Winchester with 150-165 grain hunting and service rifle bullets and 223 Remington with 55-69 grain standard loads.
The honest profile: Winchester 748 is a traditional double-base ball powder without modern temperature-stabilizing additives. Its temperature sensitivity (~1.0-1.5 fps/°F) is the defining limitation for precision long-range use. Its ball geometry metering precision (±0.04-0.07 grains) and the deep published data history in 308 Winchester and 30-30 Winchester are the defining advantages.
This article is based on published manufacturer specifications, established load data, and documented field reports. Specifications and performance figures can vary between lots, rifles, and conditions. If you have loaded Winchester 748 in practice – leave a comment below: real-world experience from the reloading bench is what separates verified data from manufacturer claims.
Powder Description and Technical Profile
Winchester 748 is a double-base, spherical powder. The double-base chemistry – nitrocellulose plus nitroglycerin – provides the energy density per grain that produces competitive velocity in 308 Winchester service rifle and 30-30 Winchester lever-action applications.
The spherical geometry produces ball powder metering – charge-to-charge variance of ±0.04-0.07 grains on quality progressive equipment. The original article’s claim of “deviations of more than 0.05 grains are exceptionally rare” is consistent with high-quality ball powder metering performance.
Bulk density is 0.980 g/cc – very high, reflecting the dense packing of uniform spheres. In 308 Winchester and 223 Remington at working charge weights, case fill runs 88-96%, adequate for consistent ignition without position sensitivity.
The clean burning at operating pressures characteristic is documented across community experience: near-maximum pressure loads show minimal soot; sub-optimal reduced loads produce noticeably more carbon residue. This is consistent with double-base ball powder behavior generally – maintain adequate case fill and operating pressure for clean combustion.
Strengths:
- Ball geometry metering (±0.04-0.07 grains) – enables high-volume progressive press production; one of the most metering-consistent powders in the medium-rifle class
- High bulk density (0.980 g/cc) – produces good case fill in 308 Winchester and 223 Remington at working charges
- Deep published data history in 308 Winchester, 30-30 Winchester, and 223 Remington – decades of North American manual coverage
- Double-base energy density produces competitive velocity in medium-capacity service rifle applications
- Long-term storage stability – the graphite and deterrent coating maintain performance over extended storage periods
Limitations:
- Temperature sensitivity (~1.0-1.5 fps/°F) – standard double-base ball powder behavior; substantially more seasonal variation than Extreme series alternatives; loads developed in summer may show pressure signs in extreme heat
- 30-30 Winchester standard loads are at the slower end – the burn rate is slightly too slow for efficient combustion with standard 150-170 grain lever-action loads; IMR 3031 is historically better matched for standard 30-30 Winchester deer loads
- 22-250 Remington standard light varmint loads are marginal – burn rate too slow for standard 40-55 grain varmint bullets in 22-250 Remington
- Dirtier at reduced loads – sub-optimal pressure produces more carbon residue
Technical Characteristics
| Property | Specification |
|---|---|
| Manufacturer | Winchester (Olin / Hodgdon) |
| Type | Double-Base Spherical (Ball) |
| Bulk Density (g/cc) | 0.980 |
| Grain Shape | Small Spherical |
| Coating | Graphite + Technical Deterrents |
| Burn Rate Category | Medium-Fast Rifle |
| Temperature Sensitivity | ~1.0-1.5 fps / °F |
Burn Rate Positioning – Corrected Comparison Table
| Powder | Type | Density (g/cc) | Burn Position | Key Character |
|---|---|---|---|---|
| Hodgdon H335 | DB Ball | 0.980 | Slightly Faster | 223 Rem 5.56 standard |
| Accurate 2230 | DB Ball | 0.975 | Slightly Faster | 223 Rem light varmint |
| Winchester 748 | DB Ball | 0.980 | Reference | 308 Win, 223 Rem 55-69 gr |
| Accurate 2520 | DB Ball | 0.975 | Slightly Slower | 308 Win Camp Perry |
| Hodgdon BL-C(2) | DB Ball | 0.990 | Slightly Slower | 308 Win 7.62 NATO |
| Ramshot TAC | DB Ball | 0.980 | Similar | 223 Rem heavy, 308 Win |
| Hodgdon Varget | SB Short-Cut | 0.910 | Slower | 308 Win Extreme |
The original article’s comparison table shows Varget density as 0.885 (corrected to ~0.910) and BL-C(2) as “High” without a number (corrected to ~0.990 g/cc).
Temperature Stability – Practical Assessment
1.0-1.5 fps per degree Fahrenheit is the documented standard double-base ball powder behavior for Winchester 748. For 308 Winchester service rifle and hunting use:
| Powder | 60°F Swing | At 400 yards | At 600 yards |
|---|---|---|---|
| Hodgdon Varget | ~25-30 fps | <0.5″ | ~1″ |
| Hodgdon H4895 | ~18 fps | <0.4″ | <1″ |
| Accurate 2520 | ~48-72 fps | ~1″ | ~2″ |
| Winchester 748 | ~60-90 fps | ~1.5″ | ~2.5″ |
| Alliant Reloder 15 | ~60-75 fps | ~1.5″ | ~2.5″ |
For hunting at 0-400 yards and service rifle competition at moderate ranges, the 1.5 inch seasonal variation at 400 yards is manageable with a seasonal zero verification. For year-round precision competition at 600+ yards, the variation requires seasonal load recalibration or temperature-corrected firing solutions.
Burn Rate Comparison and Competing Powders
vs. Hodgdon Varget: The most important comparison for 308 Winchester reloaders. Varget is Extreme series single-base at ~<0.5 fps/°F – approximately 3x more seasonally stable than Winchester 748. It meters adequately from short-cut geometry but less consistently than 748’s ball geometry. Winchester 748 produces slightly higher velocity from double-base energy. For precision year-round competition where seasonal consistency is paramount, Varget is the more appropriate choice. For high-volume production where metering efficiency is the priority, Winchester 748 is the practical tool.
vs. Hodgdon H335: H335 burns slightly faster – optimized for 223 Remington with standard 55-62 grain 5.56 NATO loads. Winchester 748 is better matched for 223 Remington with heavier 62-69 grain loads and 308 Winchester service rifle loads. For a shooter loading only standard 223 Remington with 55-grain FMJ, H335 is more specifically matched. For 308 Winchester from the same powder supply, Winchester 748 is more versatile.
vs. Hodgdon BL-C(2): BL-C(2) burns slightly slower at 0.990 g/cc with the 7.62 NATO military heritage documentation specifically for 308 Winchester service rifle cycling. Both are comparable in application; many reloaders find them nearly interchangeable in 308 Winchester and 223 Remington. Charge weights are not directly interchangeable.
vs. Accurate 2520: Accurate 2520 burns slightly slower – the Camp Perry service rifle powder for 308 Winchester with 168-175 grain match bullets. Winchester 748 is better matched for 308 Winchester with standard 150-165 grain service rifle and hunting loads. For match precision competition loading with heavy match bullets, Accurate 2520 is slightly better matched.
vs. Ramshot TAC: Ramshot TAC burns at a comparable rate with a specific 223 Remington heavy-bullet and 308 Winchester service rifle documentation. Both are comparable double-base ball powders at similar density; load development in the specific rifle guides the selection.
The 30-30 Winchester Application – Context and Caveat
The original article describes 30-30 Winchester as a primary application for Winchester 748 and one of its “legendary pairings.” This is true in the sense that published data exists and functional loads are achievable. However:
Winchester 748’s burn rate is at the slower end for 30-30 Winchester with standard 150-170 grain lever-action flat-nose bullets. IMR 3031 burns slightly faster and is historically the better-matched powder for this cartridge – producing better standard deviations and more efficient case fill at 30-30 Winchester pressures.
Winchester 748 in 30-30 Winchester is functional and documented, but for a reloader specifically loading 30-30 Winchester with standard 150-170 grain bullets, IMR 3031 is the more traditionally recommended starting point. Winchester 748 shines most in 308 Winchester and 223 Remington rather than lever-action cartridges.
Recommended Cartridges and Applications
| Cartridge | Bullet Weight Range | Notes |
|---|---|---|
| 308 Winchester | 150-165 gr | Primary service rifle and hunting |
| 223 Remington | 55-69 gr | Standard to heavy loads |
| 30-30 Winchester | 150-170 gr | Functional – IMR 3031 better matched |
| 30-06 Springfield | 150-165 gr | Light standard hunting loads |
| 243 Winchester | 75-100 gr | Light to medium hunting weights |
| 7mm-08 Remington | 120-140 gr | Light to standard hunting |
| 22-250 Remington | 55-65 gr | Heavier loads only – see note |
22-250 Remington note: The burn rate is at the slower end for standard 40-55 grain varmint bullets in 22-250 Remington. Hodgdon H380 or Hodgdon Varget are better matched for standard 22-250 Remington varmint loads. Winchester 748 may be appropriate for heavier 55-65 grain bullets where effective case volume reduction shifts the burn rate window.
35 Whelen note: The original article includes 35 Whelen as a primary application. Verify from current Hodgdon/Winchester published data for 35 Whelen before loading – the burn rate may be appropriate for lighter bullets in this larger case but requires data verification.
Bullets
Winchester 748 performs best with standard-weight service rifle, hunting, and target bullets in medium-bore calibers.
| Brand | Model | Weight | Cartridge | Application |
|---|---|---|---|---|
| Sierra | MatchKing | 155-168 gr | 308 Win | Service Rifle Match |
| Hornady | V-MAX | 53-55 gr | 223 Rem | Varmint |
| Nosler | AccuBond | 150-165 gr | 308 Win / 30-06 | Hunting |
| Sierra | GameKing | 150-165 gr | 308 Win | Hunting |
| Barnes | TTSX | 130-150 gr | 308 Win | Lead-Free Hunting |
| Hornady | ELD-M | 168-178 gr | 308 Win | Match |
| Sierra | Tipped MatchKing | 155-168 gr | 308 Win | Precision |
| Nosler | Ballistic Tip | 75-100 gr | 243 Win | Hunting |
| Hornady | LeverEvolution | 160 gr | 30-30 Win | Modern Lever-Action |
| Federal | Trophy Bonded | 150-165 gr | 308 Win | Premium Hunting |
Have you loaded Winchester 748? Your practical data on charge weights, accuracy nodes in 308 Winchester or 223 Remington, seasonal temperature behavior, or comparison with Varget or BL-C(2) helps other reloaders more than any spec sheet. Leave a comment below.
Primers
Winchester 748 as a double-base ball powder responds well to standard and magnum large rifle primers. For AR-10/M1A semi-automatic platforms, CCI No. 34 mil-spec hard-cup primer is required. For AR-15 223 Remington platforms, CCI No. 41.
| Primer | Type | Application |
|---|---|---|
| Federal GM210M | Large Rifle Match | Competition precision – gold standard |
| CCI BR-2 | Large Rifle Benchrest | Competition lowest SD |
| Winchester WLR | Large Rifle Standard | Native pairing – reliable ignition |
| CCI 200 | Large Rifle Standard | General hunting development |
| Federal 210 | Large Rifle Standard | Consistent ignition |
| CCI 250 | Large Rifle Magnum | Cold weather below 20°F |
| Winchester WLRM | Large Rifle Magnum | Magnum hunting loads |
| CCI No. 34 | Large Rifle Magnum (Mil-Spec) | Required for M1A/AR-10 semi-auto |
| CCI 450 | Small Rifle Magnum | 223 Rem cold weather |
| CCI 400 | Small Rifle Standard | 223 Rem general development |
| CCI No. 41 | Small Rifle Magnum (Mil-Spec) | Required for AR-15 semi-auto |
| Remington 9-1/2 | Large Rifle Standard | Traditional pairing |
| Fiocchi Large Rifle | Large Rifle Standard | European alternative |
Metering and Equipment Compatibility
Winchester 748’s spherical geometry delivers the metering performance that defines ball powders. On a Dillon XL 750, Dillon RL 1100, or Hornady Lock-N-Load AP, the Dillon Precision Case Activated Powder Measure Assembly handles Winchester 748 with near-liquid flow consistency at normal cycling speeds.
The Pro Tip about targeting 90-95% case fill is sound guidance. At 0.980 g/cc density, Winchester 748 produces this case fill naturally at working charge weights in 308 Winchester and 223 Remington, which correlates with the lowest standard deviations and cleanest burning.
Reloading Safety Notes
All charge weights must come from current published Winchester / Hodgdon load data for Winchester 748 specifically. Do not substitute Hodgdon BL-C(2), Accurate 2520, or Hodgdon H335 charge weights without independent verification.
Temperature protocol: at 1.0-1.5 fps/°F, loads developed near maximum in cool conditions may approach elevated pressure in summer heat. Develop maximum charges at the highest expected firing temperature.
Semi-automatic platform primers: CCI No. 34 for AR-10/M1A; CCI No. 41 for AR-15.
Start 10% below the listed maximum and work up in 0.3-grain increments. Watch for flattened primers, stiff bolt lift, ejector marks.
See the overpressure in reloading guide.
FAQ
Is Winchester 748 better than Varget for 308 Winchester service rifle competition?
Different trade-offs. Winchester 748 meters better from ball geometry (±0.04-0.07 grain vs Varget’s ±0.1-0.15 grain) and produces slightly higher velocity from double-base energy. Varget is approximately 3x more seasonally stable (Extreme series <0.5 fps/°F vs 748’s 1.0-1.5 fps/°F). For high-volume progressive press production where metering efficiency enables productive loading sessions, 748 is the practical choice. For year-round competition where seasonal zero consistency without recalibration is essential, Varget is more appropriate.
Is Winchester 748 the same as Hodgdon BL-C(2)?
No – both are double-base ball powders at similar burn rate positions but they are different commercial products with different charge weight requirements. Many reloaders find them nearly interchangeable in 308 Winchester and 223 Remington applications, but they must be developed independently from their own published data.
Conclusion
Winchester 748 maintains its place as one of the most historically documented medium-rifle ball powders in North American reloading. Ball geometry metering, high bulk density, and the deep 308 Winchester and 223 Remington data library are the defining practical advantages.
Choose Winchester 748 if you load 308 Winchester for service rifle or hunting and 223 Remington with 55-69 grain loads at high volume on progressive press equipment and want the most documented medium-rifle ball powder in North American production. Choose Hodgdon Varget if Extreme series year-round stability is the priority. Choose Hodgdon BL-C(2) if the 7.62 NATO military heritage documentation for 308 Winchester is specifically needed. Choose Accurate 2520 if 308 Winchester NRA High Power competition with 168-175 grain match bullets and flash suppression are the primary application.
Editor’s note: Published load data and manufacturer specifications are the starting point – not the final word. Field experience from reloaders who have actually worked with this powder is the most reliable guide to what it does in practice. If you have used Winchester 748, share your results in the comments.
Editorial note: Originally published 2026, revised May 2026. The revision corrected the Varget density in the comparison table from 0.885 to ~0.910 g/cc and the BL-C(2) density from “High” to ~0.990 g/cc. Added the 30-30 Winchester caveat noting IMR 3031 is historically better matched for standard lever-action deer loads. Added the 22-250 Remington light-bullet limitation. Added the 35 Whelen data verification caveat. Added both CCI No. 34 and CCI No. 41 mil-spec primer requirements for semi-auto platforms. Extended competitor comparisons to include Ramshot TAC. Extended the bullet and primer tables with full internal links. Added three community data disclaimer blocks in the correct blockquote format.
