Powder charges of less than 100 percent density are recommended when loading 165-grain Banded Solid Spitzers, because of the length of the bullets.A 168-grain Barnes TSX BT bullet can also be used for the 165-grain data.
Example the Barnes TSX an TTSX have groves that reduce the pressure. For a better experience, please enable JavaScript in your browser before proceeding. ![]() You can use this data, only make sure you start low and work up. I have found that in most cases the Barnes TTSX bullets are not that different from lead bullets when it comes to how much powder they need for a specific velocity. ![]() Be careful. Even with the Barnes bullets there is a difference between the (TSX,TTSX) and their solid bullets. The Triple shock bullets have grooves that reduce the pressure and they act more like a regular bullet. I have no experience with Nosler E-tip, but I have shot many Barnes TSX and TTSX bullets in many calibers from.243, 264,.277, 284, and.308. I have some loads that I am using the same powder charge for a Nolser Accubond and a Barnes TTSX and the velocity is almost the same. The Hodgon website, however, says a min of 59.0 and a max of 63.7 compressed for 180 grain Nosler E-tip with H4350 in 300 WSM. The biggest thing I take away from this is that I cannot simply use any 180 grain data for a 180 grain TTSX.or am I missing something. Because of the surface area of the bullet that comes in contact with the barrel is different with different bullets you get more or less pressure. Of course there are other factors, too many to mention in this short answer. The thing to do to keep safe is to use good data from good sources, and follow it. Use the brass that was used and the primers that was used when the data was collected. You just cannot simply use all data for all 180 grain bullets. From my experience and from the data I have looked at the 180 TTSX bullets come very close to needing the same data as other 180 grain lead bullets. With the Nosler E-tip and some other solid copper bullets you need to use data developed for that bullet. You asked about the data from Barnes and the Hodgdon web site. As I stated above the Nolser E-tip and the TTSX bullet are different. If you use the starting load and watch for presssure signs you will be fine.
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