You just aren't going to see 50 fps/inch losses every cut. This .338 Lapua with a 250 grain bullet was 2868 at 26" and 2751 at 22". Losses just are not as big as everyone used to claim. I haven't found a single test on their site (yet anyway) that 4 inches has added up to 200 fps. The 7mm Rem Mag which I thought would be effected badly, barely lost more than 200 fps in 8 inches!Again, the Ruger cartridges were designed for shorter barrels so that minimal velocity loss isn’t surprising. I was surprised that in the barrel test report you provided, the velocity loss wasn’t more significant with the .300WM? ALTHOUGH, if one could extrapolate from that test, the velocity loss from a 26” to a 22” at around 200fps loss, that would be somewhat significant and now in the realm of .30-06 velocities?
Here is the 338 Lapua from 30" to 17" it lost 395 fps, with the biggest drop from 18 to 17.
338 Lapua Magnum: Barrel Length Versus Muzzle Velocity One of the decisions we make when we build or buy a rifle is how long the barrel should be. Like everything else in life, barrel length is a …
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