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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Federal Trophy Bonded Tip and Trophy Copper BCs?
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<blockquote data-quote="gtita" data-source="post: 972609" data-attributes="member: 82181"><p>I tested Federal Trophy Copper (180 gr), Federal Trophy Bonded Tip (180 gr), and Barnes Vor-TTSX (180 gr) on my Tikka T3 LS <strong>.30-06</strong>. The test consisted in measuring bullet velocity at 3 yds and 100 yds employing a Chrony F1 chronograph. I then used the application iSnipe to recalibrate the ballistic coefficients in order to obtain a velocity curve consistent with my field results. Five cartridges per bullet and per distance were used.</p><p> </p><p> Resulting <strong>ballistic coefficients</strong> (within parenthesis values declared by the manufacturers) were as follows:</p><p> </p><p> Federal TC: 0.455 (0.523)</p><p> Federal TBT: 0.315 (0.500)</p><p> Barnes Vor-TTSX: 0.380 (0.484)</p><p> </p><p> <strong>Muzzle velocities</strong> (calculated from the 3 yds data) were also different as by the manufacturers:</p><p> </p><p> Federal TC: 2,770 <span style="font-family: 'Calibri'">±</span> 9 (2,700)</p><p> Federal TBT: 2,756 <span style="font-family: 'Calibri'">±</span> 13 (2,700)</p><p> Barnes Vor-TTSX: 2,615 <span style="font-family: 'Calibri'">±</span> 45 (2,700)</p><p> </p><p> <strong>Velocities at 100 yds</strong> were as follows:</p><p> </p><p> Federal TC: 2,575 <span style="font-family: 'Calibri'">±</span> 28 (2,530)</p><p> Federal TBT: 2,479 <span style="font-family: 'Calibri'">±</span> 71 (2,522) </p><p> Barnes Vor-TTSX: 2,393 <span style="font-family: 'Calibri'">±</span> 38 (2,520) </p><p> </p><p> As the data show, velocity decreased more rapidly at 100 yds for Federal TBT (-9.9 %) than for Barnes VOR-TX (-8.2 %) and Federal TC (-6.9 %). Both Federal cartridges also grouped much tighter (within 1 MOA), compared to the Barnes (within 2 MOA).</p><p> </p><p>Overall the test showed that Federal TC outperformed the two other bullets in terms of muzzle velocity, velocity conservation and BC. Both Federal bullets revealed a slightly higher muzzle velocity than the declared ones, whilst the Barnes had a lower velocity than the declared one. It is also worth mentioning that TC and VOR-TTSX are both wholly copper-made, while TBT has a lead core, which raises some environmental and health concerns.</p><p> </p><p> Considering the prices (in Canadian $) of the Federal TC (39.99 $), the Federal TBT (39.99 $) and the Barnes VOR-TTSX (48.99 $), and the ballistic performances I will continue using my since ever first choice, i.e. Federal TC, for moose hunting in Canada.</p><p> </p><p> <span style="font-family: 'Calibri'">Cheers!</span></p></blockquote><p></p>
[QUOTE="gtita, post: 972609, member: 82181"] I tested Federal Trophy Copper (180 gr), Federal Trophy Bonded Tip (180 gr), and Barnes Vor-TTSX (180 gr) on my Tikka T3 LS [B].30-06[/B]. The test consisted in measuring bullet velocity at 3 yds and 100 yds employing a Chrony F1 chronograph. I then used the application iSnipe to recalibrate the ballistic coefficients in order to obtain a velocity curve consistent with my field results. Five cartridges per bullet and per distance were used. Resulting [B]ballistic coefficients[/B] (within parenthesis values declared by the manufacturers) were as follows: Federal TC: 0.455 (0.523) Federal TBT: 0.315 (0.500) Barnes Vor-TTSX: 0.380 (0.484) [B]Muzzle velocities[/B] (calculated from the 3 yds data) were also different as by the manufacturers: Federal TC: 2,770 [FONT=Calibri]±[/FONT] 9 (2,700) Federal TBT: 2,756 [FONT=Calibri]±[/FONT] 13 (2,700) Barnes Vor-TTSX: 2,615 [FONT=Calibri]±[/FONT] 45 (2,700) [B]Velocities at 100 yds[/B] were as follows: Federal TC: 2,575 [FONT=Calibri]±[/FONT] 28 (2,530) Federal TBT: 2,479 [FONT=Calibri]±[/FONT] 71 (2,522) Barnes Vor-TTSX: 2,393 [FONT=Calibri]±[/FONT] 38 (2,520) As the data show, velocity decreased more rapidly at 100 yds for Federal TBT (-9.9 %) than for Barnes VOR-TX (-8.2 %) and Federal TC (-6.9 %). Both Federal cartridges also grouped much tighter (within 1 MOA), compared to the Barnes (within 2 MOA). Overall the test showed that Federal TC outperformed the two other bullets in terms of muzzle velocity, velocity conservation and BC. Both Federal bullets revealed a slightly higher muzzle velocity than the declared ones, whilst the Barnes had a lower velocity than the declared one. It is also worth mentioning that TC and VOR-TTSX are both wholly copper-made, while TBT has a lead core, which raises some environmental and health concerns. Considering the prices (in Canadian $) of the Federal TC (39.99 $), the Federal TBT (39.99 $) and the Barnes VOR-TTSX (48.99 $), and the ballistic performances I will continue using my since ever first choice, i.e. Federal TC, for moose hunting in Canada. [FONT=Calibri]Cheers![/FONT] [/QUOTE]
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