What bore size works best with FS rounds?

[Jordan]

Just wondering for a project. (Yes, mag-fed and brass but not what you think. Probably.)

[Jonnydread]

FSR fluctuate a bit in size, not as egregiously as roundball, but they still aren't perfectly consistent. In open class markers I like .685-686. In pump I use .683-.684, but your milage (kilometerage?) may vary.

That said, I single shot those suckers out of a .690 Armson and they still shoot GREAT.

[Jordan]

FSR fluctuate a bit in size, not as egregiously as roundball, but they still aren't perfectly consistent. In open class markers I like .685-686. In pump I use .683-.684, but your milage (kilometerage?) may vary.

That said, I single shot those suckers out of a .690 Armson and they still shoot GREAT.

Excellent, thanks. I have some .685 barrel stock that will work well then, I think.

(Oddly we still use the term "mileage" for how many kilometers are on a vehicle. Weird, right?)

[Jonnydread]

Yeah dude .685 is my go-to on my current FSR pump. I rarely get "slide-outs" and I have had no issues painting faces at long range.

and that is weird! I guess it does roll off the tongue a bit easier.

I'm excited to see your build!