(Continued from Part 1. This concludes the article.
Handloading to Getting Top Performance from Classic Rifles
For the same reasons that the military has developed high-performance ammunition, I’ve worked hard to find this load in a common cartridge that is the .30-06 and 6.5×55 for my personal rifles. It is competitive or superior at mid range to extreme long ranges out to 1,200 yards with .300 Winchester Magnum commercial hunting loads, because the bullets used have extremely high ballistic coefficients. Like the .300 Win Mag, 7mm Magnum, .30-06, and others in this class, they are good all-around cartridges for any task at hand.
The online Hodgdon Reloading Center lists a maximum load using 59.7 grains of Superformance behind a standard 180 grain lead core bullet that can produce as much as 2,840 fps with only 57,600 psi. The maximum pressure for .3006 is 60,000 psi, so there is room to tune the load to your rifle for best accuracy. Given the data at the Hodgdon Reload Center, IMR 4955 is another slow-burning powder that will produce similar velocities in the .30-06. While H4350 will produce the best accuracy and nearly 2,800fps for this bullet weight in most .30-06 rifles and is very temperature stable, Superformance produces a tad higher velocity at lower pressures and that is exactly what I need for ranges under 600 yards. However, if I am looking for a precision load for the .30-06 then H4350 is the power for 180-grain bullets, but just try to find some for sale. H4350 is the magic powder for many rifles such as .30-06 and 6.5CM and in high demand.
Continue reading“Ballistics, Rifle Marksmanship and Why They Matter – Part 2, by Tunnel Rabbit”