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Need info on Nosler Accubond 200 grain

 
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  #1  
Old 02-02-2011, 12:53 PM
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Need info on Nosler Accubond 200 grain

Has anyone tried Noslers accubond 200 grain bullet for long range hunting? I am having a hard time getting Berger 190 vlds to group out of my 300 win mag. So I am thinking about using the accubond. I can get consistent 1" groups at 200 yd at 3080 fps. However I cannot get or find what the G7 BC for this bullet is to use in my ballistic program. I called Nosler and I was told that you have to maintain a minimum of 1800 fps to get full expansion. I do not expect to shoot at game (elk)beyond 800 yd. Velocities are very different at 800 yd using G1 verses G7 BC. I have read the book applied ballistic but it gives no formula to get the drag coaficient in order to get the form factor in order to compute the G7 BC. Any info or comments appreciated.
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Old 02-02-2011, 01:03 PM
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Re: Need info on Nosler Accubond 200 grain

I use this bullet in a couple of 300 rums and have shot them out to 1000 yards. I am using exbal and using the bc's it pulls through program options. i am not sure that helped any if you are not using exbal. the bullets shoot great though and it matches the drop exbal gives me.
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Old 02-02-2011, 02:40 PM
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Re: Need info on Nosler Accubond 200 grain

Quote:
Originally Posted by elkhntr View Post
Has anyone tried Noslers accubond 200 grain bullet for long range hunting? I am having a hard time getting Berger 190 vlds to group out of my 300 win mag. So I am thinking about using the accubond. I can get consistent 1" groups at 200 yd at 3080 fps. However I cannot get or find what the G7 BC for this bullet is to use in my ballistic program. I called Nosler and I was told that you have to maintain a minimum of 1800 fps to get full expansion. I do not expect to shoot at game (elk)beyond 800 yd. Velocities are very different at 800 yd using G1 verses G7 BC. I have read the book applied ballistic but it gives no formula to get the drag coaficient in order to get the form factor in order to compute the G7 BC. Any info or comments appreciated.
I tried to find a thread for you, but was not able. One of the members here, Goodgrouper entered a very detailed thread about a Cow Elk he shot at 900+ yards with a Browning 300WM, & using the 200 Accubond. I believe the load had a little less MV than your load. I bet Len could help you find that thread.

Is the 3080 MV with the 200Acc ? If so, which components, powder, primer , brass? I am asking because I am looking at trying that bullet this spring. Oh, what barrel length?
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Last edited by Nomosendero; 02-02-2011 at 03:03 PM.
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Old 02-02-2011, 03:04 PM
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Re: Need info on Nosler Accubond 200 grain

Thanks for the info. The ballistics program i use is KAC Bullet flight level 2, version3.1.o Im new at this so there is alot to learn. My rifle is a Sako L61r long action with a Lija 26" SS fluted brl .700 at the musl. Right now I load win. brass, fed 215 primers, Reloader 22, 75 grains. To get the bergers to shoot I may try rotumbo mag powder. The best I could get with rl22 at 200 yd was 1.38-1.50 in groups
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Old 02-02-2011, 03:13 PM
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Re: Need info on Nosler Accubond 200 grain

I shoot the 200 nab out of a 325, elk out to 600,did not find bullet.Did shot one in the shoulder, threw blade at about 75 yards, recovered bullet, cant remeber but I THINK about 70% or less.
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Old 02-03-2011, 06:50 AM
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Re: Need info on Nosler Accubond 200 grain

I use JBM's program. If you have Litz's book you will see he gives lower G1 and G7 BCs for Nosler's accubond/ballistic tips bullets. I did some calculations and came out with a .273 G7 for the 200 gr Accubond. I shot for groups at 300 M and 500 M and the comeups matched. It would be a good starting point for you. Try that BC value and then make adjustments for your rifle.

I would suggest you use your chronograph during your testing. Some velocity loss or gain will change your comeups and will have you stratching your head IF you are using the wrong velocity input for your program.
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Old 02-03-2011, 07:55 AM
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Re: Need info on Nosler Accubond 200 grain

Quote:
Originally Posted by AZShooter View Post
I use JBM's program. If you have Litz's book you will see he gives lower G1 and G7 BCs for Nosler's accubond/ballistic tips bullets. I did some calculations and came out with a .273 G7 for the 200 gr Accubond. I shot for groups at 300 M and 500 M and the comeups matched. It would be a good starting point for you. Try that BC value and then make adjustments for your rifle.

I would suggest you use your chronograph during your testing. Some velocity loss or gain will change your comeups and will have you stratching your head IF you are using the wrong velocity input for your program.
Good info! Concerning the vel. loss or gain, I am going more & more to the less temperature sen. powders for that reason, to at least help that somewhat.
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