The MRX is Barnes' premium rifle bullet. With a Delrin tip and tungsten core the MRX offers an enhanced ballistic coefficient.
There are several effects from the tungsten core. It moves the center of gravity toward the rear of the bullet, and while that would tend to increase the overturning moment and reduce bullet stability, the core is denser than the copper it replaces, which makes the bullet shorter than the all-copper TSX, and that increases stability.
As for the tip, I've never known an X-type bullet to need one to facilitate expansion. It's true that for the same weight and caliber MRX bullets have a higher ballistic coefficient than TSX bullets, so maybe there's some benefit there. Ultimately, it may be that since this is Barnes' premium rifle bullet, and polymer tips are in vogue on premium bullets, it's there as much for appeal as for performance.
The most recent addition to the Barnes rifle bullet line is the Tipped TSX, or TTSX. It differs from the standard TSX in that it has a redesigned nose cavity with the Delrin tip found in the MRX bullet. Again, I'm not sure the tip is necessary for expansion, but it does allow the TTSX to have the larger hollowpoint cavity and still retain the pointed profile for increased ballistic coefficient.
The TTXS is a tipped version of the Barnes TSX bullet.
Along the way there have been other Barnes rifle bullets that were or are not necessarily all copper--not the least of which are the lead-core Barnes Original and copper/zinc alloy Banded Solids.
Hey I have these bullets in 7 mm 140 and 30 cal 180 and 330 cal 185 . I think the design is Excellent But they discontinued them years ago . Any one ever shot any game with them and if so how did they perform ? RJ
There are several effects from the tungsten core. It moves the center of gravity toward the rear of the bullet, and while that would tend to increase the overturning moment and reduce bullet stability, the core is denser than the copper it replaces, which makes the bullet shorter than the all-copper TSX, and that increases stability.
As for the tip, I've never known an X-type bullet to need one to facilitate expansion. It's true that for the same weight and caliber MRX bullets have a higher ballistic coefficient than TSX bullets, so maybe there's some benefit there. Ultimately, it may be that since this is Barnes' premium rifle bullet, and polymer tips are in vogue on premium bullets, it's there as much for appeal as for performance.
The most recent addition to the Barnes rifle bullet line is the Tipped TSX, or TTSX. It differs from the standard TSX in that it has a redesigned nose cavity with the Delrin tip found in the MRX bullet. Again, I'm not sure the tip is necessary for expansion, but it does allow the TTSX to have the larger hollowpoint cavity and still retain the pointed profile for increased ballistic coefficient.
The TTXS is a tipped version of the Barnes TSX bullet.
Along the way there have been other Barnes rifle bullets that were or are not necessarily all copper--not the least of which are the lead-core Barnes Original and copper/zinc alloy Banded Solids.
Hey I have these bullets in 7 mm 140 and 30 cal 180 and 330 cal 185 . I think the design is Excellent But they discontinued them years ago . Any one ever shot any game with them and if so how did they perform ? RJ
RJ
