Heym SR20
Well-Known Member
Standard Twist Rate allowing long heavy for calibre bullets - very good for long range, and for big animals such as Elk.
A true short action so can be used in a whole suite of different rifles from precision target and tactical rifles, through semi-auto AR10 style military to sporting rifles.
A modern cartridge so can be loaded to high pressures suitable for modern rifles - this gives good velocities with modest charges of powder, so you get clean consistent burn for good accuracy, long barrel life and low recoil.
First developed for target shooting so quickly gained a reputation for accuracy.
And in military use timing was perfect. Afganistan / iraq showed up the 5.56 and need for more downrange energy. 7.62 has been very superseded by the 338 lapua for the dedicated long range sniper role - also used for anti material role
For the dedicated marksman role, 7.62 is old has just a bit too much recoil for troops trained on 6.56 platforms. 6.5 CM has less recoil, less windage and drop and better energy downrange than 7.62, and very easy to adopt - just swap the barrels on existing 7.62 / 308 marksmen rifles as they wear out.
A thought - if the 280 enfield had been adopted in the 1950’s - which was effectively 7mm-08, and 7.62 never adopted - would this still be the main battle rifle?
A true short action so can be used in a whole suite of different rifles from precision target and tactical rifles, through semi-auto AR10 style military to sporting rifles.
A modern cartridge so can be loaded to high pressures suitable for modern rifles - this gives good velocities with modest charges of powder, so you get clean consistent burn for good accuracy, long barrel life and low recoil.
First developed for target shooting so quickly gained a reputation for accuracy.
And in military use timing was perfect. Afganistan / iraq showed up the 5.56 and need for more downrange energy. 7.62 has been very superseded by the 338 lapua for the dedicated long range sniper role - also used for anti material role
For the dedicated marksman role, 7.62 is old has just a bit too much recoil for troops trained on 6.56 platforms. 6.5 CM has less recoil, less windage and drop and better energy downrange than 7.62, and very easy to adopt - just swap the barrels on existing 7.62 / 308 marksmen rifles as they wear out.
A thought - if the 280 enfield had been adopted in the 1950’s - which was effectively 7mm-08, and 7.62 never adopted - would this still be the main battle rifle?
