TomsTXCHL wrote:Well I dunno nuttin bout blistics, but I do believe everything I read

and I read somewhere that the GS 16 was "for practical purposes" as accurate as the 18 so I got the 16 (for my wife

) for the handle-ability. Very nice rifle.
Yeah, I don't think the 16" bbl affects accuracy.......unless a given load's accuracy is dependant upon higher velocity. In fact, since both barrels have the same profile, my guess is that the shorter (and therefore stiffer) barrel is probably inherently more accurate on level or other.......although given two short barrels (16" and 18"), any accuracy difference is probably negligable. My concern was less for accuracy and more in terms of range. As much as I love it, .308 is not a particularly flat shooting cartridge, so range is fairly dependent upon velocity in order to "lob" the bullet out further.
I posted the following on the Ruger forum:
In "non-match" ammo, I've had pretty good luck with Federal Fusion 165 grain. Subjectively, whether I am shooting it from my 26" barreled Remington 700, or my 16" barreled Ruger Gunsite Scout, it is obvious that this is a "zippy" round.
Federal Premium Ammunition - Rifle
Federal claims 2700 fps out of their test barrel, which is probably a 24 to 26-incher. A 7.5"-9.5" difference of barrel length is pretty significant, and the effect of that on velocity is also measurable. A good resource is this article on The Truth about Guns:
The Truth About Barrel Length, Muzzle Velocity and Accuracy - The Truth About Guns.
Note the first graph provided in the article:
Although the load descriptions appear garbled in that image, the first column is for Hornady 168 Grain TAP.......a bullet weight similar to the 165 grain Federal Fusion. The chart shows a loss of 120 fps going from a 26" to a 16" barrel. Granted, I have no personal chrono data to back this up, but the data from this article is a safe place to start drawing some
tentative conclusions. Of course, they
remain nothing more than tentative until you go out and test them yourself, in
you rifle.
When I plug that velocity of 2585 fps in to Federal's own online ballistics app (
Federal Premium Ammunition Ballistic Calculator) using a zero of 100 yards with a max range of 500 yards, I get:
Code: Select all
[B]Range (yd) Drop (MOA) Wind Drift (MOA) Velocity (fps) Energy (ft-lb)[/B]
0 - - 2585 2448
25 -2.3 0.0 2536 2355
50 -0.2 0.4 2487 2266
75 0.3 0.5 2439 2178
100 0.0 0.7 2391 2094
125 -0.4 0.9 2344 2012
150 -1.0 1.1 2297 1933
175 -1.5 1.4 2251 1856
200 -2.2 1.6 2205 1782
225 -2.9 1.8 2160 1709
250 -3.7 2.1 2116 1640
275 -4.4 2.3 2071 1572
300 -5.2 2.5 2028 1506
325 -6.1 2.8 1985 1443
350 -6.9 3.0 1942 1381
375 -7.8 3.2 1900 1322
400 -8.7 3.5 1858 1265
425 -9.7 3.7 1818 1211
450 -10.7 4.0 1778 1158
475 -11.7 4.3 1739 1108
500 -12.8 4.6 1700 1059
Those results give you pretty much a "point and click" rifle/ammo combo out to about 300 yards, beyond which you pretty much have to start using holdover values for whitetail or hog-sized game. 300 yards is "long range" for most hunting scenarios. The odds that you would need to hit something beyond that range are slim. If you do, then you probably need a different rifle/caliber combination. But for the kind of lightweight handy hunting rifle role that the RGS fills, 300 gives you a lot of leeway.
My RGS is a "truck gun". I keep it for the same reason that others might keep a lever rifle in their truck.... except .308 beats .30-30, and the capacity is greater. Mine is topped with a Leupold 1.5-5x32 VX-R Scout scope, from SWFA.