We had a first contact with this recent shooting cartridge at the IWA 2013, at the RUAG plant in Fürth: the bore in a 202 model from Sauer, fitted with the Synchro shooting stock, had put the classic flea in the ear. Today, the studies of well-balanced and non-hypertrophic 6 mm cartridges are gaining ground and the rifles in which to use them range from hunting models to those specialized for academic shooting. Let's retrace the genesis of this umpteenth Norma proposal by observing how the Swedish company produces this cartridge in the Diamond line, specially designed for shooting.
According to a very serious method, the House has reserved for this product a first operational life in the hands of shooters at the top of the world rankings: already in 2007 champions such as David Tubb of the US NRA and Johann Gustavsson in Europe have reaped their laurels, in particular the latter. he placed the winning thrust of 600/600 in the 300m land during the UIT European Cup in Tolmezzo. The successes continue and in the same year the Swedish team scores full points at the European Championships in Granada: the charge developed by Norma sees a Berger ball of 6,8 g (105 gr) pushed to a V / 0 of 920 m / sec, therefore suitable elements to counter the wind while reducing the flight time.
The genesis of the 6XC
A nice chat with our friend Mario Bencini of Bignami di Ora (BZ) made us aware of what seems to have been the incubation and then the birth of the cartridge: the prodromes, to use an important word, are very respectable if we think that the genealogy would even go back to .22-250 Rem. one of the very high performance .22s with inherent consistency and precision at the highest levels in this range of calibers. The other parent is a sacred monster of shooting: the 6 BR Norma does not need such presentations and many have been and are its qualities shown everywhere.
It is precisely this last measure that coagulates the thoughts to obtain a cartridge with the ability to push a 6 mm ball with a normal weight of 105-107 gr and the possibility of increasing even to 115 gr, depending on the environment in question. which is operated, taking advantage of a valuable sectional density. The case resumes that of the .243 Win. shortened to 48 mm with all known values (see the genesis of the 6 mm from the military ancestor 7,62 mm Nato, which became the .308 Win in civilian capacity) implemented by the studies conducted at the time by Lou Palmisano and Ferrys Pindell with their 6 PPC on the dimensions and volume of the powder chamber, compact and resistant to rather high pressures, guaranteeing rapidity and constancy of combustion, therefore of uniform thrust on the projectile. In short, the world of Bench Rest it appears here in all its valence as a search for perfection. FOLLOWS