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From Wikipedia, the free encyclopedia
Jalonen was a Finnish firearms manufacturer in Sastamala from 1990[1] to 2016.[2] The company is known for making silhouette pistols and rifles for hunting og sport shooting based on their own series of action designs called "JJ-aktio".[1][3] The firearms were built to order, and customers could choose from a selection of chamberings.[1]
In 1990, Jyri Jalonen started producing firearms.[1] In the early 2000s it became difficult to export receivers-only from Finland, and Jalonen therefore switched to delivering barreled actions by combining their action with locally produced hunting barrels from Mäkinen for a few years until Mäkinen retired. Stocks and other accessories were ordered from other manufacturers. By 2007, the company had produced approximately thousand firearms, and was in the process of calming down its activity.[1]
In 2016 Juri Jalonen retired, and the manufacturing plant was sold to Ensio Firearms.[2] The production of silhouette pistols then gradually ceased, and Ensio switched to producing rifles based on a further development of the JJ action as well as constructing new models of modern rifles.
Jalonen's actions were lapped and made to tight tolerances,[4] and can therefore be heavy to cycle. The actions have had a reputation for having a good finish and being very straight, and have been used for benchrest shooting, often in combination with aftermarket barrels.
The triggers are proprietary, and only Jalonen's triggers can be used on their actions. These have been made in several different versions for hunting and competition either with or without a manual safety. Several of the triggers have an adjustable distance.
The extractor is placed in front of the breechface, and must be ground if a close fit between the barrel and breech is desired. The extractor is sharp from the factory and can cause chips from the cases during cycling. Like the TAP-375, the angle and location of the lever arm (that is perpendicular to the axis of the bolt sleeve) means that a deep cut for the lever arm in the stock is necessary.
In the following table, the mass is given for the complete action with bolt, trigger, trigger guard and magazine as shown on the manufacturer's website.[5] All the actions have a 90 degree bolt opening. List of mechanisms:[6]
Model | Barrel threads | Mass | ⌀ bolt | Length | Feed | Kamringer |
---|---|---|---|---|---|---|
JJ-900[7] | M25.4×1.588 mm | 1500 g | 17 mm | 233 mm | 108 mm | 6.5×55 mm, .30-06 , 7 mm Rem Mag, .338 Win Mag, and more |
JJ-90[8] | M25.4×1.588 mm | 1500 g | 17 mm | 233 mm | 108 mm | 6.5×55 mm, .30-06 , 7 mm Rem Mag, .338 Win Mag, and more |
JJ-91[9] | M24×1.5 mm[10] | 1200 g | 15 mm | 194 mm | 77 mm | .222 Rem, .223 Rem, 6 mm PPC, 7.62×39 mm, and more |
JJ-910[11] | M24×1.5 mm | 1100 g | 15 mm | 194 mm | 77 mm | .222 Rem, .223 Rem, 6 mm PPC, 7.62×39 mm, and more |
JJ-92[12] | M25.4×1.588 mm | 1550 g | 17 mm | 233 mm | 85 mm | 6 mm PPC, 6 mm BR, .308 Win, and more |
JJ-92A[13] | M27×1.5 mm,[10]
M27×1.411 mm[14] |
900 g | 17 mm | 239 mm | 91 mm | 6 mm PPC, 6 mm BR, 7 mm BR, .30 BR and more |
JJ-93[15] | M25.4×1.588 mm | 1450 g | 17 mm | 215 mm | 97 mm | .308 Win |
JJ-930[16] | M25.4×1.588 mm | 1300 g | 17 mm | 215 mm | 97 mm | .308 Win, .243 Win, .22-250 Rem |
JJ-50[17] | M63×2 mm | 3200 g | 300 mm | 158 mm | 12.7×99 mm |
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