Since I do not have any rifles, all of my LR rigs are single-shot specialty handguns with barrels from 15 inches to just under 18 inches.
I have chamberings from the 223 Rem. to the 338 Lapua Improved (338 AX).
I routinely shoot out to 1200 yards on steel with these handguns, and sometimes further.
I would would guesstimate about 40 fps per inch,but 35 fps per inch may be closer. I assume I will lose about 300 fps compared to typical rifle lengths.
I do not use the faster powders.
6-284 with 115 DTACs - H-4831sc
6.5-284 H-4350 (140 VLD's) and sometimes Hybrid 100V
284 Win (140 NBT) H-4831sc
7mm Rem Mag Imp (180 JLK) H-1000
6.5 WSM (130 Berger) H-1000
7mm Dakota (200 gr. Wildcat) Retumbo
338 AX Retumbo (300 grain SMK or Berger)
7mm SAUM H-1000 (162 A-Max)
Originally Posted by CLP308
Both of my rifles are carbines with 18 1/2" barrels. The first is a Rem 788 in .243 my father bought new in 1980 as a truck gun when we farmed. We went to Oklahoma that year(1980) prairie dog hunting. I know it will reach out there because he was shooting them out past 500 yds with it sporting an old Weaver 10X target scope.
My other rifle is a Rem Model Seven in .308 Win. I bought it to be my mountain gun for white tails here in PA. I bought it tin 1997 new and love it because its so light and easy to carry.
My question is how much velocity am I giving up compared to th 24" barrels? I have shot under two deer in the last couple of years that were out at 200-250 yards with my .308. I didn't think I would need any holdover looking at the ballistics charts, but evidently the short barrel is affecting the .308 more than the .243. I shoot 168gr Barnes XLCBT with 44gr of Accurate 2230, this is supposed to give 3090 fps out of a 24" barrel. I have also used H4895, but don't get as good of accuracy. My Data is right from Barnes and is the max load with no pressure signs.