Buddy AL anderson did this after dustin killed the bear with his .475 at 176 yards just to see what kind of velocitys he had at impact. Al is one of the few that could pull off chronoing a handgun at that range.
1. With the .475 even though Dustin and I have the same guns built at the same time 10 years ago mine runs the load he used on the bear almost 100 FPS faster, but my bullets were cast with harder alloy (probably by Lloyd) so they were 5 grains lighter. At any rate with 24 grains H 110 and a 420 LFNGC they started out at 1223 and at 176 yards they were going 1008 for a difference of 215. So at Dustins velocity they would have been going 925 when they hit the bear. When I started out the same bullet over 20 H 110 from a .480 Ruger at 1190 they were going 973 at 176 yards for a difference of 217 FPS.
3. .475 and 400 RCBS Keith Style bullet started out at 1136 and at 176 yards were going 956 so they lost 180 fps.
4. With my 4" .500 Linebaugh built by Dustin and a 440 Keith of MT Baldy design over 28 grains of H 4227 they started out at 1083 and at 176 yards were going 908 for a difference of 175, this gun and bullet were used on a black bear and I will have a short story on Dustins web site about it.
5. Last .500 Linebaugh I checked yesterday was a 480 grain LFNGC over 16 grains of HS6 and started out at 984 and at 176 yards were going 847 for a difference of only 137 so these big bullets may start out slow but don't slow down much.
And velocities can vary greatly from gun to gun as I was shooting 5 different .500 linebaughs recently and one would be around 60 fps slower than two others with the same barrel length.
Well thats it for now have to get outside and shoot between the heavy snow coming down.
Take Care,
Al
