Quote History Originally Posted By wyolarry:
I practice with 62 FMJ,
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You might want to check out the Hornady 62 grain FMJ bullet, which is available as a reloading component.
Hornady Black 223 Remington 62 Grain FMJHornady has produced at least two different versions of their all-lead-core 62 grain FMJ projectile, which I’ll refer to as Gen 1 and Gen 2. Both versions are standard construction copper-jacketed (gilding metal), lead core bullets. They do not have a steal “penetrator” like M855.
This lot of factory loaded ammunition is topped with the Gen 2 version of the 62 grain FMJ bullet. The Gen 2 version (pictured on the right below) is longer than the Gen 1 version. The Gen 2 version has a longer boat-tail than the Gen 1 version and the Gen 2 version has a narrower diameter of exposed lead at the base of the bullet than the Gen 1 version.
I tested the accuracy (technically precision) of the Hornady factory loaded 223 Remington 62 grain FMJ ammunition using a free-floated Colt M4A1 barrel. This is a 14.5” chrome-lined, NATO chambered barrel with a 1:7” twist.
A 10-shot group fired off of sand bags at a distance of 100 yards had an extreme spread of 1.32” and a mean radius of 0.35”.
When chronographed from a 20" chrome-lined, NATO chambered Colt barrel with a 1:7" twist, the 223 Remington 62 grain Hornady Black FMJ load had a muzzle velocity of 2961 FPS with a standard deviation of 24 FPS.
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