In my opinion, the Winchester Fail Safe ammunition is premium hunting ammunition that performs admirably. In my experience, I have obtained very reasonable groups with this ammunition. Winchester classifies this ammunition as CXP3, but the ammunition is extremely effective for killing light, thin-skinned game (CXP2) and large, heavy game (CXP3).
The Winchester 300 Win. Mag. 180 grain Fail Safe ammunition has excellent accuracy for hunting ammunition. I use this ammunition in a Browning semiautomatic 300 Win. Mag. Lightweight Stalker with a BOSS. (The BOSS is a combination of a muzzle break and adjustable weight that allows the rifle to be tuned to different factory loads.) I shoot ½-1” groups at 100 yards using a rifle rest.
The bullet is very lethal. I have shot numerous whitetail deer with this bullet and they were all recovered within 10 to 150 yards. I also use this bullet to field kill bison by shooting the bison in the head at 25-30 yards. Now that is a real test for any ammunition. With other bullets, multiple shots are required, but with the Fail Safe: one shot, one kill!
Let me provide one example of the accuracy and lethality of this ammunition. I shot a very large 9 point atypical whitetail buck on December 10, 2006. As I had read the blog before hunting, I made a point to study the kill in detail.
The animal traveled approximately 50 yards and dropped dead. The bullet entered the buck centered vertically just behind the shoulder, which is where I was aiming. The bullet traveled at an angle to the rear through both lungs and the liver. The exit wound in the hide was twice the size of the bullet. While processing the animal, I observed that the bullet had started expanding upon hitting the ribs and was fully expanded by the time it exited the body. The bullet left a large wound channel in both lungs and the liver. Now that is the type of performance that I like to see in a hunting bullet!
I am very disappointed that Winchester decided to discontinue making this ammunition and supplying the bullet. Fortunately, I have been able to purchase enough bullets and ammunition to last me several decades. Hopefully, Winchester will again make this superior CXP3 ammunition again one day.
Thank you for giving people the opportunity to express their opinion about this very fine ammunition. I am pleased to see that other hunters have also enjoyed success with this ammunition.
P.S. I have documented the pathology of the wounds using a digital camera. If anyone is interested in viewing the awesome power of this bullet, please contact me.