They all share proprietary yellow MMP sabots that accommodates their boat tails, and all have relatively pointy noses that make them more ballistically efficient. It will expand less, and the farther you go out the lower impact velocity will result in even less expansion. With my load of 30.0 grains of 8028 XBR, the 10 string average muzzle velocity was 2793.3. Hunters should choose bullets based on accuracy in their rifles, the velocity their cartridges/rifles put out, the size/bulk of game targeted, and the anticipated shooting distance. Expansion is a function of bullet construction, sectional density, velocity and the characteristics of the target material. I get 2500 FPS from Barnes … Spitfire TMZ bullets are new for 2006. All other Barnes bullets including the TSX (part # 30835) that the OP asked about have a minimum expansion threshold of 1900-2000 FPS which is similar to most standard cup and core hunting bullets. Here is the body of the email that I received back from them. One of the friendly tech reps at Barnes Bullets told me that all X-Type big game hunting bullets, regardless of caliber or weight, are designed to initiate expansion at impact velocities of 1600 fps. Minimum expansion is claimed at 1600 but from what I have seen online, it is minimal at that velocity. The Barnes "Spitfire" 245 and 285 gr. Hope this will help anyone that uses their bullets. I am referring specifically to the velocity shown for all the bullets listed under the 1,000 yard performance through bone into ballistic gelatin images. The Barnes Triple-Shock is a very misunderstood bullet. Especially if you miss bone. Instant expansion and perfect penetration ensures cleaner, quicker kills.

The Barnes is a controlled expansion bullet and it does just that. Barnes goes further with science based inaccuracies with the velocities they publish. As I compare the data in Manual Number 3 with data in the new manual, it's clear that the new banded bullets allow Barnes to publish increased velocity loads. We do not publish that data but I can tell you. However, this does not mean they do … Complete penetration, virtually 100-percent weight retention and four razor-sharp cutting petals that double bullet diameter means the new Tipped TSX creates more internal damage than any competing bullet. Minimal expansion velocity for .30 cal bullets with different weights isn't the same so I would imagine that the 7mm cal bullets would be different too. One must pick projectiles for Long Range Hunting carefully. This pattern will continue until there is no expansion and where the … One of my favorite misconceptions is the notion that some bullets expand faster than others. Hunters consider Triple-Shocks to be very tough bullets, and they are. Barnes, in addition to testing with sophisticated measuring equipment, live fires a minimum of 11 rounds for every 5,000 bullets produced to test for pressure, velocity, and accuracy in their state-of-the-art underground test range. These velocities are the MINIMUM Impact velocity needed for expansion. When comparing them at a muzzle velocity of 3,000 fps, at 500 yards the TSX is traveling 1,940 fps and produces 1,404 ft.-lbs. This makes it a lead free, mono-metal bullet.

At a certain depth, a bullet ceases to expand do to loss of velocity. For example, in Manual Number 3 , the highest velocity noted for the 130-grain .270 Win. If you don't believe me call Barnes and ask the minimum velocity for expansion for the TTSX 168 grain. Hey guys and gals. The tip and a re-engineered nose cavity provide even faster expansion. Effective expansion will occur at impact velocities in excess of about 1800 fps. The reason I chalk this up to failure of the Barnes X bullet to expand is that others have reported similiar experiences of the X bullet only punching a small caliber-size hole in a deer without expanding. The 110 grain bullets generally get about a 2400 FPS muzzle velocity. The program is called Barnes Ballistics 2.0, and is produced and marketed by the same Barnes Bullets company that produces fine varmint and big game bullets in American Fork, Utah. A major aspect of Barnes' program that impressed me is the ease of use to a novice computer user, such as myself. I finally got to the range to test the low end velocity expansion of the 280 grain Barnes LRX from my dads savage 338 Lapua using trail boss powder and the bullets seated to just kiss the lands. The higher the impact velocity, the harder the bullet should be (controlled expansion.) I contacted Barnes a while back to find out the MINIMUM velocity to make their TAC-XP bullet expand.