I agree with your comments (dont I always) Laurie!
Firstly, the AI version of the 6.5x47L should have some serious grunt in a long barrel with a strong target bolt action. I get the Scenar 139gr bullets to exit at 2920fps out of a 32.5" barrel with 38.5 grains of Varget. I would expect maybe 2950fps (6.5-284 territory) with the AI version.
When launched at 2920fps the velocity drops to 1602fps at 1000 yards with 66 inches drift in a 10 mph crosswind. When you point up the 139gr Lapua Scenars you end up with a G7 BC of approx 0.300 which is pretty damn good for a bullet as well priced and dimensionally consistent as these bullets are.
Now having said all that, I get to the bit where I agree with Laurie. The 6.5x47L is a truly accurate, tight grouping machine out to 600 yards and then the wind gives it a difficult time. Maybe if you can run extreme velocities and get 2950fps you will do better than I have been able to do regularly at long range. I shot against a 7mm SAUM at 1000 yards in the wind last weekend and was beaten convincingly. On calm days I'm competitive on the longer ranges but in the wind I struggle to keep up with the 7mm guns.
My solution is to do as Laurie recommends and shoot the 6.5x47L on the shorter ranges out to 600 yards. I have ordered a 7mm barrel and just taken delivery of a 284 Shehane reamer so I will have the long ranges covered with 180gr Berger VLDs launched at 2950fps very soon.
Final comment on this superb cartridge is when will the "6.5x47L Info Page" become a reality on this great website?
Ian
Firstly, the AI version of the 6.5x47L should have some serious grunt in a long barrel with a strong target bolt action. I get the Scenar 139gr bullets to exit at 2920fps out of a 32.5" barrel with 38.5 grains of Varget. I would expect maybe 2950fps (6.5-284 territory) with the AI version.
When launched at 2920fps the velocity drops to 1602fps at 1000 yards with 66 inches drift in a 10 mph crosswind. When you point up the 139gr Lapua Scenars you end up with a G7 BC of approx 0.300 which is pretty damn good for a bullet as well priced and dimensionally consistent as these bullets are.
Now having said all that, I get to the bit where I agree with Laurie. The 6.5x47L is a truly accurate, tight grouping machine out to 600 yards and then the wind gives it a difficult time. Maybe if you can run extreme velocities and get 2950fps you will do better than I have been able to do regularly at long range. I shot against a 7mm SAUM at 1000 yards in the wind last weekend and was beaten convincingly. On calm days I'm competitive on the longer ranges but in the wind I struggle to keep up with the 7mm guns.
My solution is to do as Laurie recommends and shoot the 6.5x47L on the shorter ranges out to 600 yards. I have ordered a 7mm barrel and just taken delivery of a 284 Shehane reamer so I will have the long ranges covered with 180gr Berger VLDs launched at 2950fps very soon.
Final comment on this superb cartridge is when will the "6.5x47L Info Page" become a reality on this great website?
Ian