Somchem Load Data & Reloading Guide
Somchem, with roots extending back to the early 20th century, has established itself as a prominent player in the ammunition manufacturing and reloading components industry. Known for its comprehensive range of reloading powders, Somchem is particularly esteemed in the handloading community for its meticulous attention to quality and consistency. Their powders are formulated to meet the rigorous standards demanded by professional reloaders, ensuring uniformity in grain size and burn rate, which are critical for achieving precise and repeatable results. Somchem's reputation is built on an unwavering commitment to research and development, allowing them to consistently meet the evolving needs of modern shooters.
About Somchem
For the reloading enthusiast, Somchem offers an extensive selection of propellants suitable for rifle, pistol, and shotgun applications. These products are complimented by detailed reloading data, readily available on their website, which provides vital starting points for load development. This data is meticulously tested under stringent laboratory conditions to guarantee safety and performance, thus instilling confidence for those developing new loads or fine-tuning existing ones. The company remains a mainstay within the handloading community thanks to its robust distribution network and support.
As a manufacturer, Somchem has fostered a reputation for reliability and innovation. Their commitment to quality control ensures that every batch of powder meets the highest industry standards, providing reloaders with the trust and assurance needed for their craft. With a legacy of excellence, Somchem continues to be a preferred choice for seasoned reloaders seeking consistent and dependable performance in their handloading pursuits.
Develop your own Somchem Load Recipes
Use our ballistics calculator to create precise load recipes with products from this manufacturer.
Start CalculatingSomchem Powders in our Database:
Somchem MP200
Somchem MP200 is a fast-burning propellant powder specifically engineered for handgun and pistol applications. As a flake powder, MP200 exhibits excellent metering properties, allowing for precise, repeatable charges that are crucial for consistent performance in competitive shooting environments. Its burn rate of 7.9 positions it well for use in a variety of small to medium caliber handgun rounds, such as 9mm Luger, .38 Special, and .40 Smith & Wesson. MP200 is recognized for its stability across a wide temperature range, which ensures reliable ignition and consistent velocities regardless of environmental conditions. When developing loads with MP200, reloaders can take advantage of its ability to achieve excellent pressure-to-velocity ratios, enhancing both efficiency and performance. Furthermore, its clean-burning properties help to minimize residue build-up, thereby reducing maintenance frequency for enthusiasts who engage in high-volume shooting. Overall, MP200 provides an excellent balance of performance, metering accuracy, and cleanliness, making it a favored choice among handloaders seeking optimized handgun loads.
Somchem MS200
MS200 by Somchem is a versatile pistol powder with a burn rate classified as fast, making it ideal for a range of handgun cartridges. Its precise engineering suits applications in pistol loads where consistent ignition and efficient burn are critical. MS200's spherical powder form facilitates excellent metering properties, enabling smooth and accurate charge weights for enhanced precision during the handloading process. A key characteristic of MS200 is its robust temperature stability, ensuring reliable performance across varying climatic conditions, a critical factor for outdoor shooters and competitive participants alike. Popular calibers that benefit from MS200's attributes include the 9mm Luger, .40 S&W, and .45 ACP, where it provides optimal pressure management and velocity. When considering load development, end users can appreciate MS200's capacity for achieving desired ballistic performance while maintaining manageable recoil. MS200 stands out for its ability to deliver excellent accuracy and consistency, making it a highly favored choice among seasoned ammunition reloaders seeking dependable results.
Somchem S121
Somchem S121 is a versatile propellant with a medium burn rate, classified at 8.7, making it highly suitable for developing handgun and pistol loads. This powder is designed to accommodate a wide range of common pistol calibers, offering consistent performance particularly in calibers such as 9mm Luger, .45 ACP, and .38 Special. Its granular physical form ensures excellent metering properties, allowing for precise charge weights in automated and manual dispensing systems. S121 exhibits commendable temperature stability, maintaining reliable ballistic performance across diverse environmental conditions, which is advantageous for shooters seeking consistent results regardless of weather variations. Handloaders will find S121 conducive to finely tuned load development, with a balance between pressure and velocity that facilitates precision and reliability. Its stable ignition characteristics also minimize variation, reducing shot-to-shot inconsistencies. Somchem's reputation for quality and dependability is well-regarded within the handloading community, making S121 a preferred choice for those seeking consistent, high-quality ammunition tailored for handgun applications.
Somchem S221
Somchem's S221 is a versatile, medium-fast burn rate propellant ideally suited for pistol and handgun load applications. With a burn rate positioned at 6.4, S221 is optimized for efficient combustion in a variety of calibers. This propellant is presented in a fine-grained, extruded form that contributes to superior metering properties, ensuring consistent charge weights during the reloading process. S221 exhibits notable temperature stability across a broad range of conditions, making it an excellent choice for load development in environments where temperature fluctuations are a concern. S221 is particularly popular among reloaders for calibers such as 9mm Luger, .45 ACP, and .40 S&W, where its performance enhances both accuracy and velocity potential. Handloaders will appreciate the ease of achieving desirable load densities and the tight standard deviations offered by this powder. When developing loads with S221, users are advised to consider slight adjustments to load data, focusing on safety and performance optimization. Somchem's commitment to quality and consistency gives reloaders the confidence needed to achieve precise ballistic results, reinforcing its reputation in the handloading community.
Somchem S265
Somchem's S265 is a fast burn rate propellant powder, designated by a burn rate of 4.3, making it particularly suited for handgun and pistol applications. Its physical form is a fine-grained powder, allowing for consistent and precise metering when using progressive reloading equipment. S265 is renowned for its excellent temperature stability, ensuring reliable performance across a wide range of environmental conditions, which is a crucial attribute for competitive shooters and hunting applications. This powder is frequently paired with popular handgun calibers such as 9mm Luger, .38 Special, and .45 ACP, facilitating performance-driven load development. Handloaders will appreciate the ease of developing loads with S265, as its consistent burn characteristics help achieve target pressure levels efficiently. The powder's fast burn rate enables it to develop pressure quickly, delivering optimal performance in small to medium case volumes typical of pistol cartridges. Somchem's reputation in the handloading community further ensures that S265 is a trusted choice for precision and reliability in custom ammunition crafting.
Somchem S321
Somchem's S321 is a rifle propellant powder with a medium burn rate, designated at a 2.7 on the burn rate scale, making it an excellent choice for a wide range of rifle calibers. Its physical form is a spherical (ball) powder, which facilitates superior metering properties, ensuring consistent charge weights that are highly valued in progressive reloading presses. S321 exhibits commendable temperature stability, maintaining reliable performance across varying environmental conditions, a crucial factor for precision shooters and hunters alike. This propellant is ideally suited for medium rifle cartridges, with popular pairings including calibers such as .223 Remington and .308 Winchester, where it is known to produce consistent velocities and tight standard deviations. When approaching load development, handloaders should note its robust ignition characteristics and efficient burnout, which contribute to its reputation for producing clean-burning loads. For experienced reloaders, S321 offers distinct advantages in achieving precise, repeatable performance due to its consistent metering and adaptability in diverse atmospheric conditions.
Somchem S335
Somchem's S335 is a versatile rifle propellant with a medium burn rate, ideally suited for a range of calibers that require balanced pressure and velocity development. This extruded powder exhibits excellent metering properties due to its consistent granule size, facilitating precise, repeatable measurements crucial for tailored load development. S335 demonstrates robust temperature stability, ensuring consistent performance and minimized velocity variation across varying environmental conditions—an attribute highly valued by precision shooters. Typically paired with popular calibers such as .223 Remington, .308 Winchester, or smaller-capacity cartridges, this powder achieves optimal performance in full-length rifle cartridges where medium-range velocities and pressures are desired. In terms of load development, S335 offers handloaders flexibility in tuning loads for accuracy and performance, with reliable ignition characteristics that support clean and consistent burning. This powder's specific advantage lies in its adaptability to a wide array of rifle applications, making it a preferred choice for those seeking both versatility and precision. Somchem is well-regarded within the reloading community for its quality control and consistent batch-to-batch reliability, reinforcing the trust of reloaders worldwide.
Somchem S341
Somchem S341 is a versatile propellant powder specifically designed for rifle applications, characterized by a medium burn rate of 2.5. This makes it ideally suited for cartridges requiring efficient energy transfer and consistent performance across a range of calibers. The physical form of S341 is a spherical powder, which offers excellent metering properties through various dispensing systems, ensuring precise and repeatable charge weights—critical for competitive shooting and precision reloading. Renowned for its temperature stability, S341 delivers reliable performance in varying environmental conditions, maintaining consistent pressures and velocities even in extreme temperatures. This quality is particularly advantageous for hunters and shooters who require dependable ammunition performance in diverse climates. Commonly paired with popular calibers such as .308 Winchester and .30-06 Springfield, S341 provides handloaders with the flexibility to fine-tune their ammunition for both accuracy and velocity. Its consistent burn characteristics offer a forgiving margin during load development, allowing reloaders to achieve peak performance with carefully tailored loads. Somchem's reputation within the handloading community further solidifies S341 as a top choice for those seeking reliability and precision in their reloading endeavors.
Somchem S355
Somchem S355 is a rifle propellant powder with a medium burn rate, specifically measured at 2.1 on the burn rate scale, making it an excellent choice for a wide range of rifle calibers. It is designed to perform well in cartridges where the balance between pressure and velocity is crucial, such as the 308 Winchester and 30-06 Springfield. The physical form of S355 presents as small, clean-burning granules that contribute to consistent metering properties, ensuring uniform charge weights during the reloading process. This powder exhibits commendable temperature stability, which mitigates the effects of ambiental fluctuations, thereby delivering reliable performance across diverse shooting conditions. Handloaders will appreciate the powder’s ability to facilitate smooth load development, yielding repeatable results with minimal deviations. Somchem, known for its production of high-quality propellants, ensures that S355 offers consistent ignition and pressure characteristics. For the adept reloader, S355 provides a significant advantage in achieving precision and accuracy across a variety of rifle calibers.
Somchem S361
Somchem S361 is a rifle propellant with a slow burn rate, optimal for a broad spectrum of calibers requiring carefully controlled energy release. Favored for its consistency in long-range and large-caliber applications, its burn characteristics are ideally matched with cartridges such as the 30-06 Springfield, 270 Winchester, and 300 Winchester Magnum, where precision and power are paramount. The extruded powder granules facilitate smooth metering, ensuring uniformity in charge weight and ballistic performance across multiple loads. S361 holds a strong reputation among handloaders for its excellent temperature stability, making it a reliable choice in both hot and cold climates. When developing loads, users should begin with manufacturer-specified starting loads, gradually increasing to desired performance levels while remaining attentive to pressure signs. The primary advantages of S361 include its versatility across numerous rifle calibers and its ability to deliver consistent velocity and accuracy under varying environmental conditions, making it a preferred choice for competitive and hunting shooters alike.
Somchem S365
Somchem S365 is a medium burn rate propellant, particularly suitable for rifle cartridges. Renowned for its consistency and performance in medium to large capacity cases, this powder caters to reloaders seeking precision loads for cartridges such as the .30-06 Springfield and .270 Winchester. Its extruded grain form ensures uniform ignition and combustion, although meticulous attention during metering is recommended to ensure consistent charge weights. Handloaders often appreciate S365 for its comprehensive temperature stability, enabling dependable performance across varied environmental conditions. This stability is crucial for those developing loads for hunting or target shooting in diverse climates. Careful load development is essential to maximize the benefits of S365, particularly in achieving optimal pressures and velocity. This propellant's ability to deliver excellent accuracy with reduced deviation in velocity makes it an advantageous choice for precision shooting. Somchem's reputation for producing reliable, high-performance propellants enhances the appeal of S365 among experienced handloaders seeking dependable results.
Somchem S385
Somchem's S385 is a single-base powder exhibiting a slow burn rate with a burn rate factor of 0.9, making it particularly suited for high-performance rifle applications. The powder's burn characteristics lend themselves well to the loading of large capacity cases where controlled burn is essential to maintain accuracy and performance, such as in calibers like .300 Winchester Magnum and 7mm Remington Magnum. The S385 is a cylindrical powder which, although slightly challenging to meter due to its shape, provides consistent charge weights when measured using high-quality dispensing systems. S385 is known for its stability across varying temperature conditions, ensuring reliable performance whether shooting in high heat or cooler climates. Reloaders appreciate this powder for its capability to deliver optimal velocity and pressure levels without sacrificing safety. During load development, careful consideration of the powder's slower burn rate is important to achieve the best accuracy and velocity while adhering to safe load practices. The S385's reputation in the handloading community is bolstered by Somchem's commitment to quality and precision, making it a favored choice for crafting precision hunting and long-range ammunition.
Standard Load Data — Somchem
Select your desired cartridge and bullet weight below to access the corresponding load table. From there, you can choose any listed load recipe and transfer it directly into the ballistics calculator for further refinement, optimization, and precision tuning.
.357 | 158gr | CamPro TC FCP
.357 Mag.
.264 | 120gr | Speer Gold Dot
6.5 Grendel
.311 | 86gr | H&N RN HS
7.63 Mauser
.243 | 89gr | Apex Outdoors Afterburner
6 mm Creedmoor
.284 | 184gr | Berger F-Open Hybrid Target
7-6.5 PRCW
.308 | 131gr | THAC EDH
.308 Win.
.451 | 200gr | X-TREME SWC
.45 ACP
.452 | 195gr | H&N SWC HS
.45 Colt
.284 | 150gr | Osprey Virtus
.280 Ackley Improved
.338 | 225gr | Hornady SST InterLock
.338-06 A-Square
.358 | 225gr | Woodleigh RN SN
.350 Rem. Mag.
.284 | 105gr | AERO SOSR,- smax:14.20
7 mm Exp. Rem.
.243 | 85gr | IBEX TRD
6 mm ARC
.375 | 350gr | Woodleigh RN SN
.378 Weath. Mag.
.224 | 40gr | Rhino Penetrator
.222 Rem.
.224 | 40gr | Nosler CT Ballistic Silvertip
.222 Rem.
.309 | 170gr | Reichenberg HDB Universal
.300 AAC Blackout
.309 | 71gr | H&N RN HS
.32 Long Colt
.224 | 55gr | Reichenberg HDB Universal
.22 Ackley Hornet
.284 | 100gr | Barnes X S
7 x 33 Sako
.338 | 225gr | Woodleigh HS
.340 Weath. Mag.
.243 | 90gr | CutEdge MTAC
.243 WSSM
.323 | 171gr | Peregrine VLR-5
.325 WSM
.308 | 220gr | Woodleigh RN SN
.300 RCM
Community Loads — Somchem
Sample load data using Somchem bullets or powders from our database.
You need a PRO license to unlock and view all data.
Frequently Asked Questions
We offer load data for 12 Somchem powders, including Somchem MP200, Somchem MS200, Somchem S121, Somchem S221, Somchem S265.