We have also designed the barrel so that we can put an integrated suppressor on it in the future, hence the shoulder at the back. As we were building this primarily as a subsonic barrel, we saw no reason in having a longer barrel than necessary as we are not looking for extra velocity. The second consideration is length, and we went for a 16-inch barrel. This allows us to stabilize any bullet up to about 250g and will easily stabilize the current factory subsonic expanding bullets which are either 190 to 220 grains. So rather than try and use a factory rifle I thought we would attempt to make the perfect 308 barrel for the 1996 Accuracy International we have.Ĭlearly the primary consideration is twist rate, and we went for a 1-in 8. This sees most existing factory 308 with a 1-in 12 or 1 in 13 unable or struggling to stabilize these bullets. But this means great news for 308 owners, or does it?īoth Hornady, Nosler and Federal make some superb 308 bullets designed for expansion at subsonic velocities however both really need a twist rate of better than 1 in 11. This is primarily due to the 300 blackout. Now, however, bullet manufacturers are making some subsonic bullets that are designed to expand at subsonic velocity. They work well but do not expand at these velocities. Remember we cannot get extra energy from velocity as we are always just below the speed of sound, so velocity remains constant. Its extra weight helped with energy as well. 308 220 gr InterLock® RN from Hornady perfect. So in the early days of experimenting, I found the. The ideal shap for stabilising would be a flat topped and bottom cylinder, the worst shape to stabilise would be a pointy bullet with a boat tail. To get a bullet to stabilise where the twist rate is marginal, like a 1:12 308 barrel shooting subs, you can overcome it with the shortest fattest bullet you can find. Infact with the Lapua Subsonic bullets I would have done well to hit a barn. But one of those things I’ve never succeeded very well with is getting subsonic rounds to hit the target with any accuracy. The 308 is one of those rounds that just does so many things. The heavy jacketed base prevents bullet deformation during firing.Īcts as a platform for large-diameter mushroom.īoat tail configuration combines with the streamlined polymer tip for extreme long-range performance and for easier loading.The 308 and it’s use with subsonic and supersonic ammunition utilising a faster twist barrel. Streamlined polymer tip, color-coded by caliber, resists deformation in the magazine and initiates expansion upon impact.Ģ Fully-Tapered Jacket and Special Lead-Alloy CoreĪllows controlled expansion and optimum weight retention at all practical velocity levels. Unique tapered jacket provides controlled expansion at all practical ranges and velocities. These flat-shooting, wind-defying bullets utilize ballistic-designed boat-tails and polymer tips to increase long-range efficiency and protect against tip damage in the magazine. These bullets deliver the accuracy, consistency and down-range punch required for clean kills in all situations. The combination of performance and versatility that Nosler® has built into these bullets has resulted in over 25 years of successful hunts for sportsmen across the country – and around the world. Whether you’re after Whitetails, Blacktails, Mulies or Pronghorns, Ballistic Tip® bullets deliver the kind of accuracy, consistency and down-range punch required for putting down that buck in any situation. The more you hunt, the more you start to realize how unpredictable and unforgiving nature can be, which is why we engineered the Ballistic Tip® Hunting bullet to be very predictable and extremely forgiving.
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