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-   -   Ballistic coefficient vs accuracy (https://www.huntingnet.com/forum/black-powder/230447-ballistic-coefficient-vs-accuracy.html)

sabotloader 02-03-2008 01:12 PM

RE: Ballistic coefficient vs accuracy
 
Indiana SmokePole

Personally when I am forced to use a conical it would be one of Dan's 460MT Nex vs the UC short. One of the reason UC developed the UC short was to be able to use it in the slower twist rate barrels, but for me the 460 works well in a 1/24 White Barrel, 1/28 GM barrel, and equally well in a 1/48 TC barrel.

Any time I can I will still use a .451/.458 Nosler Partition all day vs a conical. I still prefer copper, trajectory, and time in flight being to my advantage. Weighing all those factors - I will shoot a sabot..

Indiana SmokePole 02-03-2008 01:28 PM

RE: Ballistic coefficient vs accuracy
 
Sabotloader

I have been shooting Both the 460gr NEX & the U C Shorts in both my KRB7 & Disc Extreme Wich both have a 1/28" twist rate 1 is 27" barrle & 1 is 26" barrle and Both guns shoot a 1" shot group with the U C shorts and a 1.25 to 1.5 " shot group with the NEX so I can Shoot ether one but I will go with the Shorts, and all most all my hunting is 150yds and under so if I am getting this type of Accuracy out of my Conicals Why would I want to pay more for a Jacketed Bullet and even more $$$ on sabots ? Plus I save $$$ on powder because I don't have to shoot 100 - 130gr to get my load to shoot well .
But SL if that is what works for you That is great , I am just trying to give these guys other options that work and work well .
Ron

sabotloader 02-03-2008 02:27 PM

RE: Ballistic coefficient vs accuracy
 
Indiana SmokePole

Good points... I shoot 90 grains of T7-3f and shooting about the same size groups. Have you ever shot shot any of Dan's 400 grain LGP's - they are another excellent conical. I tried them but could not get the velocity boost I was looking for so went back to the 460's...

The only reason I prefer the copper clad bullet is for the fact that I can shoot a lighter bullet with better trajectory, have less time in flight, less effected by exteranl forces,and have the same energy on the other end that you would have with the big conicals. And of course my belief that the copper jacket bullet is a strong and more effective killing bullet than the conical. The conical depends on size and weight, where I am more confortable with speed and performance and most of all penetration. The size of a mushroomed 460 is huge and reduces penetration and velocity after the hit, while the lighter, controlled exspansion of the Nosler maintains velocity and penetration for a longer period of time.

It is an age old comparison - but if the conical was that much better of a hunting bullet we would still be using it in mass and therewould be no need of the modern hunting bullet. Now do not take that wrong - the conical will do the job and it is even better now than it was... but it will not match up day in and day out to a Barnes, Nosler, or even a Gold Dot in a ML.

You also might want to stock up on your conicals - price of lead just took another huge jump - everybodies bullets are going up...

mike

Skopia 02-03-2008 03:16 PM

RE: Ballistic coefficient vs accuracy
 
Does Dan at Bull Shop have a web sight?

sabotloader 02-03-2008 03:22 PM

RE: Ballistic coefficient vs accuracy
 
Skopia

Yep... right here...

http://bullshop.gunloads.com/prices.html



lemoyne 02-03-2008 07:07 PM

RE: Ballistic coefficient vs accuracy
 
Skopia,"Why would a bullet with a lower BC shoot a littlemore consistently than one with a higher BC?"
The SD and the BC are only indirectly related to accuracy, what you are dealing with is barrel harmonics or "Whip"
the better bc may give you a bit flatter trajectory which may help with long range accuracy but only a littlw.
The barrel vibrates or whips with the violance of discharge the right amount of powder will stablize that so that the bullet exits the barrel at the same point in the movement every time that when you start seeing tight groups of course every thing else has to be consistant also. Lee

falcon 02-03-2008 07:46 PM

RE: Ballistic coefficient vs accuracy
 
My favorite.30 caliberbulletfor short to medium range target shooting in .308 and .30-06 is the 150 grain Hornady round nose. In my favorite .308 this bullet makes five shot groups at 100 yards that you can cover with a penny. It is more accurate to 200 yards in than anyone's match bullet, andi have used them all. The reason is very basic: According to Hornady, it is a lot easier to make a perfect round nose bullet. So that Hornady round nose bullet hasa BCa little better than a rock-a very accurate rock.

bowbender6 02-04-2008 06:48 AM

RE: Ballistic coefficient vs accuracy
 
I wan to feel confident to 200 yards. The wind is more of a problem than bullet drop. Time of flight is most important for wind deflection. Time of flight is based on bullet speed and how well th ebullets keeps it's speed (balistic coeficent). I also have an Omega and will post some target and speed info soon as I get it compiled. I want to shoot the lighted best BC bullet I can but it looks like the 300 shockwave is what my Omega likes.


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