ORIGINAL: retrieverman
ORIGINAL: cayugad
With that projectile and that powder charge you will get good speed. Whether a 22" barrel will get the full benifit from a 130 grain charge of Triple Se7en I do not know. I figured the bullet which has a BC of .210 at a muzzlel velocity of 1950 fps. This should be in that ball park. If you sight the rifle in 1.9 inches high at 100 yards the projectile should behave close to the following manner from the ballistic chart;
1.9" high at 100 yards
0.7" 125
0.0 135
-1.4" 150
-4.6" 175
-9.0 200 and still has a muzzle energy of 942
-14.6 225 still pushing 862
-21.6 250 yards and still pushing 791
of course you see the bullet is really starting to drop and loose power. This would of course be effected by many different factors but will give you an idea.... hope this helps and answers your question.
cayugad
I see the bc is .210 on the 250 gr Shockwave. What is the bc on the 250 gr Expander? I have had GREAT luck with the 250 gr Expanders, but I am still going to try the SST's. I have bought 250 and 300 gr SST's and 300 gr Expanders to try also. On your chart which is ballistically better?
My understanding is the BC of the 250 Barnes Expander is .189 so I ran it at 1950 fps speed and dead on at 100 yards. The numbers are;
100 yards = 0.0 -
125 yards=-1.6 - 1501 fps- 1251 energy
150 yards=-4.2 - 1423 fps- 1125
175 yards=-7.8 - 1351 fps- 1013
200 yards=-12.6 - 1284 fps- 915
225 yards=-18.7 - 1223 fps- 831
250 yards=-26.3 - 1168 fps - 698
So it looks like the SST hangs a little flatter in the ballistics and the speed and energy are about the same. I guess it boils down to which design you like the best. The Expanders really do a number when they hit according to all the posts I have read....
hope this helped..
If you figure it at the same hold over of the Expanderof 133 feet to true 0 then the whole numbers change a little. At 125 yards the Expander is still 0.6 above the bull with 1501 fps and 1251 energy and all the numbers as far as drop are about the same with the SST although the SST retains a little more speed and down range energy then the Expander.