Don't you think that the label / term .22 LR is due for a change to maybe ".22 SR Plinkster"
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on_one_wheel wrote:Iv been waiting patiently for some advancements in .22lr ammo, they must have peak tuned the projectiles BC. speed and weight long ago
Wyliecoyote wrote:on_one_wheel wrote:Iv been waiting patiently for some advancements in .22lr ammo, they must have peak tuned the projectiles BC. speed and weight long ago
Some may recall the Federal Match ammo, 900A, 900B, then 1000A and 1000B Ultramatch that was produced specifically for the 1996 US Olympic shooting team. Long discontinued and sorely missed by many. What wasn't well known that at the same time Federal was trialling ammo that was capable of consistently holding half MOA at 100 yards and did so at a time long before barrel tuners were commonplace. Subsonic velocity, a somewhat harder lead slug than in the previous line of match ammo, same mica dry lubricant. What was different was the powder and load density and more attention to crimp tension from bullet to bullet.
For a number of years BR shooters were aware of primer flash over and its affect on velocity ES. A number of actions including a couple of my own used multiple firing pins, up to four, 6 o'clock positioned firing pins and even ED ignition systems to try and improve ammo ES. For me the jury is still out on whether or not multiple firing pins were of any benefit other than illiminating misfires from poorly primed ammo, which coincidentally Federal had solved by the dimple base and spinning the compund into the rim.
What Federal did was basically look to data of centerfire ammo. Best performance in many cartridges was achieved by 90 to 95% load density. So a new proprietary powder was developed to fill the 22LR case when a bullet was seated, illiminating any possibilty of flash over no matter what angle the chamber was at.
All was good other than the cost which would have been around double that of their premium Ultramatch. So it never went beyond the trial stage and has long been shelved. It is possible to manufacture 22LR ammo to a high precision but the line is where to stop before the cost of manufacture exceeds what the consumer will pay.
Wyliecoyote wrote:For a number of years BR shooters were aware of primer flash over and its affect on velocity ES. A number of actions including a couple of my own used multiple firing pins, up to four, 6 o'clock positioned firing pins and even ED ignition systems to try and improve ammo ES. For me the jury is still out on whether or not multiple firing pins were of any benefit other than illiminating misfires from poorly primed ammo, which coincidentally Federal had solved by the dimple base and spinning the compund into the rim.
The Universal Truth wrote:the line is where to stop before the cost of manufacture exceeds what the consumer will pay.