The JK6 range as been a heritage cartridge in the RC range for decades.
This double-base propellant is a hotter burning powder which enables an increased velocity of the cartridges and tighter pattern retention created from the plastic wad
* Indicative Ballistic Data (full choke)
V1 (m/sec) = Speed is measured at 1 meter from the barrels
All Ballistic Data are carried out in full comformity to C.I.P. regulations
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