Originally Posted by bvmoney
So ive been reading more and more about GPS Defense cutting down their 308 rifles to 18. So my ques is: what other calibers can you cut the barrel down to 18 without considerable lose in accuracy or FPS. Also are they cutting down factory barrels or aftermarket?
Also i found a website the other day that started at 24 and ended at 10 barrel length. It also showed the FPS table for every inch cut off. But i dont rem the caliber.
First, Welcome to LRH!
I hunt and shoot almost exclusively with specialty pistols-Primarily single-shot handguns chambered in rifle cartridges.
250 Sav AI, 6mm-6.5x47Lapua, 6-284, 6.5-284, 284 Win, 7mm Rem Mag Imp, & 7mm Dakota.
My barrel lengths will run from 14"-18"
With my 17-18 inch barrels I will see about 200-300 fps difference (depends on cartridge for one) compared to typical rifle lengths (whatever that is)
For instance with two different 17" 6.5-284's using 140's MV's run from 2700-2775. An 18" (140 grain A-Max) runs @ 2725. I go for the accurate load, not the fastest load.
Accuracy is not an issue for these short barrel rigs if you use quality, prepare everything correctly, and as long as what is going on between yours ears is good you will hit your target