Long barrels let you wring out the most from a cartridge but it won't work miracles.
From Kel-Tecs RFB rifle brochure:
"The improved ballistic efficiency of the RFB rifle derives from a very long barrel increasing muzzle velocity over 10% when compared with similar sized rifles.
The long range improvement is even more pronounced with a heavier bullet at normal velocity. An M110 SASS shoots a 175 grain projectile at 2500 fps. The RFB will fire a 210 grain bullet at the same velocity, resulting in 65% more knockdown energy at 1000 m. At the same distance the wind deflection is reduced to 72%.
This ballistic performance is superior to a traditional 300 Win Magnum and closely approaches a 338 Lapua."
This is only true if "
traditional 300 Win Magnum" means 180 hunting bullets at 3000 fps and 210 VLD target bullets are used in the .308. If the same bullets are used the 24" barreled 300WM still has a 300 fps advantage and the comparison isn't even close. "
and closely approaches a 338 Lapua." Um, no, it doesn't. Now if they had compared to the 06, ah but the 06 doesn't say Magnum now does it.
I just wish manufacturers would knock off these these dubious comparisons and tired, Slick Willie style word parsings.
"The 32" barrel version would be interesting in 6.5 G if their action can handle more than 50K psi as in the AR versions. Higher pressures with a longer barrel in 6.5 G could mean .264 winmag or 6.5 Remington mag performance from a nice short cartridge!"
No, the 6.5 Grendel runs out of gas even with a 32" barrel. My software only gives it 2800 fps with the 120 BT even with 58,000 cup pressure. Again, 260 Rem/6.5x55 territory yes but not 264 Win or 6.5 Rem mag.
I like both the 6.5G and this new gun but lets keep it real please.
