Author Topic: Need BC for a .458 bullet  (Read 1065 times)

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Offline valvesinmyhead

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Need BC for a .458 bullet
« on: December 06, 2009, 10:57:38 AM »
Where can I get the BC for a .458 lead round nose flat point bullet?

Offline jro45

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Re: Need BC for a .458 bullet
« Reply #1 on: December 07, 2009, 02:51:57 AM »
Some bullet makers put it right on the box.

Offline Smokin Joe

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Re: Need BC for a .458 bullet
« Reply #2 on: December 07, 2009, 04:22:12 AM »
This one's .278



What make and bullet weight were you looking at?
Deo duce, ferro comitante
With God as my leader and my sword as my companion

Offline valvesinmyhead

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Re: Need BC for a .458 bullet
« Reply #3 on: December 07, 2009, 08:42:53 AM »
Duh! 405gr lead RNFP. Ultramax .45-70 ammo

Offline quickdtoo

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Re: Need BC for a .458 bullet
« Reply #4 on: December 07, 2009, 09:28:57 AM »
Call them and ask, it's toll free!  ;)

800-345-5852

Tim

http://www.ultramaxammunition.com/cowboy.php
"Always do right, this will gratify some and astonish the rest" -  Mark Twain

Offline valvesinmyhead

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Re: Need BC for a .458 bullet
« Reply #5 on: December 07, 2009, 11:54:26 AM »
Thanks Tim. Ultramax said ".214" for the .458 405gr RNFP.

Offline HuntAway

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Re: Need BC for a .458 bullet
« Reply #6 on: December 09, 2009, 01:19:35 PM »
Now I'm confused. Correct me if I'm wrong and set me straight please.

RNFP = Round Nose Flat Point yes?????

How is that accomplished? I've heard of;

FNSP = Flat Nose Soft Point
RNSP = Round Nose Soft Point

but I've never heard of RNFP.  ???
How would you get a round nose with a flat point?

Thanks,

HA

Offline quickdtoo

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Re: Need BC for a .458 bullet
« Reply #7 on: December 09, 2009, 01:25:29 PM »
Do an internet search for .458" RNFP, you'll see that many bullet mfrs offer them, the RNFP has a small meplat as opposed to a wide flat nose.

Tim

http://www.cheycast.com/catalog.htm
"Always do right, this will gratify some and astonish the rest" -  Mark Twain

Offline HuntAway

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Re: Need BC for a .458 bullet
« Reply #8 on: December 09, 2009, 01:30:53 PM »
Thanks Tim. Seems like an oxymoron to me but I'll take your word for it.  lol Just never heard of it before.

Regards,

HA

Offline valvesinmyhead

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Re: Need BC for a .458 bullet
« Reply #9 on: December 09, 2009, 02:56:24 PM »
Scroll down to the 45-70 round.
http://www.ultramaxammunition.com/cowboy.php

Offline valvesinmyhead

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Re: Need BC for a .458 bullet
« Reply #10 on: December 09, 2009, 03:10:42 PM »
Some info.
Name: UltraMax 45-70 405gr RNFP 50yds
Ballistic Coeff: 0.214
Bullet Weight: 405
Velocity: 1100
Target Distance: 50
Scope Height: 1.000
Temperature: 70
Altitude: 500

Ballistic Data
~~~~~~~~~~~~~~~
  Range  Elevation  Velocity   Energy     ETA         Drop      Max Y  10mph Wind Deflect
  0 yds   -1.00 in  1100 fps  1087 fpe  0.000 sec    0.00 in  -1.00 in    0.00 in
 25 yds    0.45 in  1068 fps  1025 fpe  0.069 sec    0.92 in  -0.17 in    0.19 in
 50 yds    0.00 in  1039 fps   971 fpe  0.140 sec    3.73 in   0.56 in    0.72 in
 75 yds   -2.47 in  1013 fps   923 fpe  0.214 sec    8.57 in   1.82 in    1.59 in
100 yds   -7.03 in   990 fps   882 fpe  0.288 sec   15.50 in   3.64 in    2.75 in
125 yds  -13.80 in   969 fps   844 fpe  0.365 sec   24.64 in   6.07 in    4.21 in
150 yds  -22.92 in   949 fps   811 fpe  0.443 sec   36.13 in   9.15 in    6.01 in
175 yds  -34.45 in   931 fps   780 fpe  0.523 sec   50.03 in  12.90 in    8.09 in
200 yds  -48.43 in   914 fps   751 fpe  0.604 sec   66.37 in  17.36 in   10.39 in
225 yds  -65.01 in   898 fps   725 fpe  0.687 sec   85.32 in  22.56 in   12.97 in
250 yds  -84.12 in   882 fps   700 fpe  0.771 sec  106.79 in  28.50 in   15.73 in
275 yds -106.10 in   868 fps   677 fpe  0.857 sec  131.14 in  35.28 in   18.81 in
300 yds -130.99 in   853 fps   655 fpe  0.944 sec  158.40 in  42.93 in   22.19 in
325 yds -158.86 in   840 fps   634 fpe  1.033 sec  188.63 in  51.47 in   25.82 in
350 yds -189.73 in   826 fps   614 fpe  1.123 sec  221.87 in  60.91 in   29.69 in
375 yds -223.64 in   814 fps   595 fpe  1.215 sec  258.15 in  71.29 in   33.76 in
400 yds -260.61 in   801 fps   577 fpe  1.307 sec  297.49 in  82.62 in   38.03 in
425 yds -300.99 in   789 fps   560 fpe  1.401 sec  340.24 in  95.00 in   42.59 in
450 yds -344.82 in   778 fps   544 fpe  1.497 sec  386.43 in 108.46 in   47.41 in
475 yds -392.31 in   766 fps   528 fpe  1.594 sec  436.29 in 123.08 in   52.54 in
500 yds -443.53 in   755 fps   513 fpe  1.693 sec  489.88 in 138.88 in   57.95 in

Name: UltraMax 45-70 405gr RNFP 100yds
Ballistic Coeff: 0.214
Bullet Weight: 405
Velocity: 1100
Target Distance: 100
Scope Height: 1.000
Temperature: 70
Altitude: 500

Ballistic Data
~~~~~~~~~~~~~~~
  Range  Elevation  Velocity   Energy     ETA         Drop      Max Y  10mph Wind Deflect
  0 yds   -1.00 in  1100 fps  1087 fpe  0.000 sec    0.00 in  -1.00 in    0.00 in
 25 yds    2.21 in  1068 fps  1025 fpe  0.069 sec    0.92 in  -0.17 in    0.19 in
 50 yds    3.52 in  1039 fps   971 fpe  0.140 sec    3.73 in   0.56 in    0.72 in
 75 yds    2.81 in  1013 fps   923 fpe  0.214 sec    8.57 in   1.82 in    1.59 in
100 yds    0.00 in   990 fps   882 fpe  0.288 sec   15.50 in   3.64 in    2.75 in
125 yds   -5.01 in   969 fps   844 fpe  0.365 sec   24.64 in   6.07 in    4.21 in
150 yds  -12.38 in   949 fps   811 fpe  0.443 sec   36.13 in   9.15 in    6.01 in
175 yds  -22.15 in   931 fps   780 fpe  0.523 sec   50.03 in  12.90 in    8.09 in
200 yds  -34.37 in   914 fps   751 fpe  0.604 sec   66.37 in  17.36 in   10.39 in
225 yds  -49.19 in   898 fps   725 fpe  0.687 sec   85.32 in  22.56 in   12.97 in
250 yds  -66.55 in   882 fps   700 fpe  0.771 sec  106.79 in  28.50 in   15.73 in
275 yds  -86.76 in   868 fps   677 fpe  0.857 sec  131.14 in  35.28 in   18.81 in
300 yds -109.90 in   853 fps   655 fpe  0.944 sec  158.40 in  42.93 in   22.19 in
325 yds -136.01 in   840 fps   634 fpe  1.033 sec  188.63 in  51.47 in   25.82 in
350 yds -165.12 in   826 fps   614 fpe  1.123 sec  221.87 in  60.91 in   29.69 in
375 yds -197.28 in   814 fps   595 fpe  1.215 sec  258.15 in  71.29 in   33.76 in
400 yds -232.49 in   801 fps   577 fpe  1.307 sec  297.49 in  82.62 in   38.03 in
425 yds -271.11 in   789 fps   560 fpe  1.401 sec  340.24 in  95.00 in   42.59 in
450 yds -313.18 in   778 fps   544 fpe  1.497 sec  386.43 in 108.46 in   47.41 in
475 yds -358.91 in   766 fps   528 fpe  1.594 sec  436.29 in 123.08 in   52.54 in
500 yds -408.38 in   755 fps   513 fpe  1.693 sec  489.88 in 138.88 in   57.95 in