bullet pointing improve BC?
- Thread starter JonathanK
- Start date
Bob Kingsbury
New member
Absolutely, I have been using a bullet pointing die for some time now.
Core seated jackets have the glide angle of a brick if you don't. Not only that, but they agree with my bullet seater much better.
Seriously, all bullets of the jacketed variety are finished in a pointing die
Core seated jackets have the glide angle of a brick if you don't. Not only that, but they agree with my bullet seater much better.
Seriously, all bullets of the jacketed variety are finished in a pointing die
JerrySharrett
Senile Member
For several years Ferris Pindell experimented with pointed bullets. As he put it "needle points". Two years ago a friend bought the last of Ferris's pointing die and repointed several different weights and jacked length bullets. This friend is primarily a 600/1000 yard shooter. He found that the Pindell needle point removes about 12" drop at 1000 yards over a conventional point that has about 0.040"-0.060" flat.
He pointed me some 68 grain Watsons and some 80 grain Bergers. At the 100/200 situation I could not find a significant difference. As an aside, Don Geraci shot some of the needle points and felt they did have less wind drift at 200. But, Don was shooting a needle point 80 grain bullet against a conventional 68 grain bullet. Not exactly apples to apples.
In performing the extra step there is always the possibility of changing the ogive curve which probably would be counterproductive to accuracy.
You can do your own calculations for BC change at
http://www.eskimo.com/~jbm/calculations/mpm/mpm.html
IMO, a small BC change is not really helpful in the 100/200 game.
He pointed me some 68 grain Watsons and some 80 grain Bergers. At the 100/200 situation I could not find a significant difference. As an aside, Don Geraci shot some of the needle points and felt they did have less wind drift at 200. But, Don was shooting a needle point 80 grain bullet against a conventional 68 grain bullet. Not exactly apples to apples.
In performing the extra step there is always the possibility of changing the ogive curve which probably would be counterproductive to accuracy.
You can do your own calculations for BC change at
http://www.eskimo.com/~jbm/calculations/mpm/mpm.html
IMO, a small BC change is not really helpful in the 100/200 game.