While 308 Win is less powerful, it also has much more manageable recoil than 300 Win Mag. The 300 Win Mag cartridge delivers a higher velocity, longer effective range, and more energy than the 308 cartridge, which makes it better suited for longer-range shooting and for hunting larger, tougher game. In terms of ballistics, 300 Win Mag is generally considered to be more powerful than. Due to its extreme accuracy and range, 300 Win Mag rounds are perfect for long-range bench shooting competitions. It is particularly well suited for big-game hunting, as its combination of high velocity and heavy bullet weights makes it capable of delivering deep penetration and effective knockdown power at distances out to and beyond 1000 yards. 300 Winchester Magnum, commonly known as the 300 Win Mag, is a popular and versatile cartridge that is used for a variety of hunting and long-range shooting applications. With double-diameter expansion, you’ll deliver excellent stopping power for better tissue and bone destruction of targets. Boxer-primed, non-corrosive, and designed to original standards, this 300 Win Mag rifle ammunition provides maximum weight retention for a more accurate shot. Manufactured to precise and exacting standards, 300 Win Mag Ammunition can tackle tight tolerances for hunting, plinking, and other outdoor activities. I have avoided the more modern smooth shanked monometals on purpose- so no experience with them.Feel less friction at a fraction of the cost with high-quality 300 Win Mag Ammo. And in doubles, it may be necessary to crimp to prevent bullet "pull". And in heavier recoiling rounds in magazine rifles, it is almost imperative to crimp to avoid bullet "setback". I have had no issues crimping any of the monometals. The Lee collet type Factory Crimp Die is the best to use. My experience with the banded monometals includes 30, 338, 416 and 458 calibers. They have been very predictable for pressure vs velocity and it has been easy to develop accurate hunting loads with them. I've also found, without exception, the modern banded designs to be as accurate if not more accurate than the conventional heavy jacketed and bonded premium bullets. The modern banded monumental brass and copper bullets by the various manufactures are like the difference between night and day with the early smooth shanked Barnes X. The original, smooth shanked Barnes X bullets were horrendous for fouling, poor accuracy and pressure spikes. I've found the banded solids like the TSX to be no more or less fouling than conventional jacketed bullets. What is the inherent accuracy potential of the rifle? And if it is capable of <1" 100- what load? How does it shoot a comparable lead core premium like an A Frame or Woodleigh?Īs to jacket fouling?. 308, using Sierra MatchKing bullets, it it isn't me.ĭo I need to try a different powder? Should I continue experimenting with the seating depth? 6" groups from the same set up with my Remington 700 Varmint in. For testing, the gun is sandbagged in place on a benchrest. I am wondering what I can do to improve the accuracy of my loads at this point. Those rounds are too long to fit in the magazine, and there doesn't seem to be much difference in accuracy. For the 69.3 loads, I measured the chamber with the Hornady gauge and seated. All the loads except the 69.3 were seated to 3.340", which is what it says in the Barnes manual. I didn't really measures group size the first day, but for the second set up loads, group sizes at 100 yards were as follows:Īverage group size across all 8 groups is 2.38". The velocity numbers are based on a 10 round average for each load. During both ranges session so, far, the air temperature was about 27 degrees Fahrenheit. My groups are averaging 2.3" at 100 yards. I have the velocity nailed with 69.3 grains (the max load out of the Barnes manual), but I am not presently satisfied with the accuracy of the load. My goal is 3000 fps and sub-MOA groups off the bench. I am developing a load using Barnes 180 gr. 300 Win Mag, topped with a Leupold VX 3i 4.5-14 x40 in Warne rings and bases. My primary rifle for the trip will be a Winchester M70 Super Grade chambered in. I'll be hunting plains game in the Eastern Cape province of the RSA this coming June. Hello: I am preparing for my first African hunting trip.
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