The development of the 243 Winchester Ammo is partly owed to the famous gun writer Warren Page. It is based on the 7.62x51 military case, which was necked down to .242. The reason behind its creation is that hunters would have access to ammo that would perform well on predator/varmints and deer-sized games. The .243 Winchester Ammo delivered excellently on this expectations.
When you use 90 and 100-grain bullets, it will handle deer and pronghorn antelope easily. However, the lighter bullets work excellently with foxes, woodchucks, and many more like them. In addition, it offers a light recoil, ensuring that shooters can accurately place their shots. This is possible irrespective of their recoil sensitivity. This balance between versatility and light recoil is why it is one of the most famous rifle chamberings in the world.
The .243 Winchester Special is being chambered in the Model 70 and the Model 88 lever action. Both offer accurate shots and ensure varmint hunters enjoy precise shot placements. Additionally, its best virtue is the killing power it provides for medium games. It provides the killing power at a noise and recoil level that helps hunters shoot calmly and accurately. In addition, it has enough power to penetrate a medium-sized deer's shoulder without exiting the broadside.
The .243 Winchester Special is ideal for games weighing 80kg because it cannot ensure sufficient penetration on larger games. Although it will cause free bleeding, the killing will be slow, allowing animals to run considerable distances. The fastest kills are achieved within 200 yards and at impact velocities between 2650 fps and above.
Thompson/Center and Hornady developed the .65 Creedmoor Ammo. The two gunsmiths came together to create ammo that would fit into the .308 Win and offer high muzzle velocity and length action. The 30 T/C was necked down to hold the 6.5 mm bullets, and this was how the 6.5 Creedmoor came to be.
The goal of creating the 6.5 Creedmoor Ammo was to maintain a 0.473-inch case head diameter. This feature allows it to run efficiently on the AR-10 platform. The developers also wanted ammo with light recoil for rapid-fire and to ensure shooter comfort. Finally, they wanted ammo that could use readily available components like powder for easy replication. With this in mind, Dennis DeMille and Dave Emary set out to work.
The result was excellent, and the resulting 6.5 Creedmoor Ammo delivered low recoil while still proving enough horsepower to drive a 140-grain bullet to a muzzle velocity of over 2700 fps. In addition, the 140-grain B.C bullets used resists the effect of gravity and wind deflection efficiently. As a result, it can provide a flat trajectory and enhance shooters' ability to minimize wind effects. You could also expect a muzzle velocity of 2,900 fps from 140-grain bullets.
With a 30-degree shoulder, the 6.5 Creedmoor Ammo offers good head-spacing, and the 0.285-inch neck offers an impressive neck tension. These design features allow it to become shooter-friendly instantly. Also, the 6.5 Creedmoor is excellent ammo for long-range targets. You can ensure deep penetration from over 1000 yards. It is used for hunting almost all games, including elk and moose.