Re: Barnes TTSX low velocity expansion test - 12/26/13 I have wondered if barnes builds these to expand a little easier at the lower speeds of the blackout. Barnes tested the Savage 110 ML-II smokeless powder muzzleloader using Barnes 250-grain MZ bullets, with excellent results. If you have a custom-throated barrel, you should be aware of it. CR-10 is a very aggressive copper remover and is too strong to be allowed to remain in the bore overnight. I would expect their performance into dry paper to be erratic at best with poor expansion being common to typical. Therefore, we always recommend using our data. Because TSX Bullets retain nearly 100 percent of their original weight and penetrate so deeply, many shooters select a lighter-weight X-Bullet or TSX in place of a heavier conventional bullet. Some manufacturers compare their bullets only to existing size and shape models to determine a theoretical BC. 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. Barnes – .375″ – 270gr TSX ( Triple-Shock X ) bullet results! Why are my patches blue when they come out of the bore. It is possible, that this bullet can handle more velocity without breakdown, or not. But for real world hunting distance which is or has been under 350-400 yards for all but the more elite skilled and very heavily practiced riflemen this 2000fps level is not a big problem. How do these all-copper bullets perform on hogs? The LRX also features a polymer tip along with a longer nose profile and a boattail design that delivers match grade accuracy at long range with an incredibly high B.C. Once the bullet strikes flesh, it immediately opens, creating four razor-sharp petals that slice through tissue. The TTSX differs from the TSX in that it features a re-engineered nose cavity that accommodates a polymer tip. The ammonia in CR-10 will react with the copper in your barrel to create a blue residue. Regular cup/core bullets would sometimes leave more impressive exits with more blood to track by, but when they did not exit, there was often no blood at all. The newer bullets tend to be more reliable, though I never had an issue personally with the old ones. Pitting or etching in your barrel may occur if you do let it soak over a long period of time. Barnes feels measuring the BC over 300 yards provides customers with data more useful for long-range shooting out to 600 yards or more. Harder bullets tend to be inclined to retain their manufactured form better than softer, denser types. Also, will the .45 bullet stand up to .454 Casull velocities in both. Our MZ Aligner Tool is designed to seat the bullet in proper alignment with the axis of the bore. Flat-nosed Originals will begin expanding at approximately 1600 fps; other Barnes Originals expand at 1900 fps. The bullet doubled (2,1x) its width, as the manufacturer advertices. Powered by UBB.threads™ PHP Forum Software 7.7.3. Think of a bullet shot into water as an over expansion scenario. If you’re using a slower twist, we recommend choosing a shorter (lighter) bullet for your rifle. Also at the slower velocity of 619m/s (2031fps) the expansion of the bullet was at the OK level (1,68x), considering that we are talking about the big-game rifle cartridge and bullet, and the impact at the 172 meters (188 yards). We want to give our thanks to our reader who sent these .375″ Barnes TSX 270gr bullets for us to test in our Hard-Hitting Shooting Lab. firstname.lastname@example.org Yes. Yes, in most instances TSX Bullets will completely penetrate deer-sized game. Can I use the .375″ Winchester 220 grain Original in my .38/55? My first thought at looking at both holes was that they could have been made with a broadhead...and you could eat to the holes. The answer is, of course, No. I guess the other question to ask is what would happen to that bullet (130gr ttsx) at 308 win speeds. without sacrificing terminal performance. The big advantage the Spit-Fire TMZ polymer tip provides is a higher BC value for flatter trajectories at extended range. Reduced pressures mean the bullet can be safely loaded to higher velocities. In the same situation, a lead-core bullet would likely disintegrate. What kind of accuracy can I expect with the Varmint Grenades? … Bore butter or a bit of saliva can ease loading in snug-fitting bores. We have had some technical calls asking if CR-10 will damage a rifle bore. I decided to try more power. They're very good bullets when they work well; speed helps them work.