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Boosting BC of commerical bullets.....

 
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  #8  
Old 03-17-2013, 08:19 PM
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Re: Boosting BC of commerical bullets.....

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Originally Posted by barnesuser28 View Post
those are pretty cool, they look similar to elkaholic's bullets.
would you ever sell these to people who dont have a lathe? namely me?

Can not say right now, at the moment, just playing around to see what CAN be done and how well it can be done. Once I prove things, MAYBE.....
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Kirby Allen(50)

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  #9  
Old 03-17-2013, 08:35 PM
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Re: Boosting BC of commerical bullets.....

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Originally Posted by Engineering101 View Post
Kirby

Iím impressed that you could make such a mod to so many different bullets without tearing them up let alone have them turn out looking like factory new. It will be interesting to hear what you discover when testing them.

Are not the 30 cal and under bullets you mentioned a little less interesting given that Nosler is coming out with their Accubond Long Range line?
Its really a pretty simple set up, the tricky thing is to figure out how much of the ogive needs to be removed and then getting a system that is repeatable. Not every bullet is perfect, still working on a few tweaks but it does pretty well.

If Nosler stays on pace with past bullet releases, we should see the new bullets sometime around 2015!!! Anyway, they had a huge opportunity to make a perfect long range big game bullet in their 300 gr, 338 cal accubond and they flubbed that badly. Not saying its a bad bullet, its accurate and terminally it is great but the baring surface is WAY to long which reduces top velocity potential in any chambering and the ogive design is no different then any of their other ogives and it should have been much more aggressive. They could have easily made a .800 BC bonded core, tipped bullet, unfortunately, they played it VERY safe and came up with a .700 BC bullet that is 50-75 fps slower then the SMK and 75-100 fps slower then the Berger of the same weight. FLUB!!!! I will believe their new LONG RANGE Accubonds will do what they say when I put them in the air and they match up to the computer models, until then, I will not hold my breath.

I am not flaming Nosler in any way, I love their Accubonds, they just could be made more aggressively and still easily be stabilized by standard twist rates which for some reason is something that they just do not believe. Not sure why.
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Kirby Allen(50)

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Home of the Allen Magnum, Allen Xpress and Allen Tactical Wildcats and the Painkiller Muzzle brakes.

Farther, Faster and Flatter then ever before.

Web Page: www.apsrifles.com

allenmagnum@gmail.com
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  #10  
Old 03-17-2013, 08:41 PM
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Re: Boosting BC of commerical bullets.....

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Originally Posted by Fiftydriver View Post
Can not say right now, at the moment, just playing around to see what CAN be done and how well it can be done. Once I prove things, MAYBE.....
If you do i would be very interested in a 280 grain Barnes LRX with the metal tip, i think the BC would then be very close to that of the 300 SMK or maybe even a little more. Take care.
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  #11  
Old 03-17-2013, 08:45 PM
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Re: Boosting BC of commerical bullets.....

Roy,

I am working on or will be working on some 270 bullets as well, the 150 gr Barnes tsx should show some promise in spite of being a flat base bullet. In spite of conventional wisdom, a flat base bullet will actually fly to 1000 yards and well beyond.

Driven out of my 270 Allen Magnum it will clip along at a solid 3500-3600 fps depending on barrel length used.

Its listed with a BC just shy of .5. With one of these tips, I would think it would crowd .6 BC pretty hard. A .6 BC bullet at 3550 fps is not to damn bad!!!

The sierra 150 gr SPBT Gameking would also be a other great choice offering around .6 BC in finished tipped bullet but I am afraid that at the velocity potential of the 270 AM, it would pop like a big Blitzking on big game and really make a mess and not penetrate very well.

The 140 gr Accubond will certainly be tested as well. IF Noslers new 150 gr LR accubond actually gets here and actually has a BC of .625, it will bring new life into the 270 AM but you can wish in one hand and crap in the other and see which fills up first. I think you know what I mean with that mental image!!
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Kirby Allen(50)

Allen Precision Shooting
Home of the Allen Magnum, Allen Xpress and Allen Tactical Wildcats and the Painkiller Muzzle brakes.

Farther, Faster and Flatter then ever before.

Web Page: www.apsrifles.com

allenmagnum@gmail.com
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  #12  
Old 03-17-2013, 08:58 PM
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Re: Boosting BC of commerical bullets.....

Kirby,

Any idea what Nosler has done to get their LR bullets to perform all the way down to 1,300 fps? They must have changed the core material, no?
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  #13  
Old 03-18-2013, 01:43 AM
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Re: Boosting BC of commerical bullets.....

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Originally Posted by royinidaho View Post
Kirby

The differences between you and I are that you have skill, experience, talent, equipment and an uncanny knack for bringing these together with near magical results. However, I do think that I have it on you in the 'looks' area.

Roy nailed it, main difference being I didn't have my looks to fall back on, when my skill level proved insufficient to the task. Very cool to see it done.
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  #14  
Old 03-18-2013, 09:27 AM
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Re: Boosting BC of commerical bullets.....

Quote:
Originally Posted by Engineering101 View Post
Kirby,

Any idea what Nosler has done to get their LR bullets to perform all the way down to 1,300 fps? They must have changed the core material, no?

Not nessesarily, the core they use is very soft anyway. If I had to guess, I would say they did a couple things other then change the core alloy.

1. More aggressive wedge design on the tip and also a deeper hollow cavity under the tip to allow freeer expansion at impact.

2. Redesign the jacket for a thinner jacket at the meplat and ogive.

Now, this is just speculation and nothing more but if someone asked how to get better expansion at longer range, these two ways would do it.

Their cores are noticably softer lead then a SMK for example.
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Kirby Allen(50)

Allen Precision Shooting
Home of the Allen Magnum, Allen Xpress and Allen Tactical Wildcats and the Painkiller Muzzle brakes.

Farther, Faster and Flatter then ever before.

Web Page: www.apsrifles.com

allenmagnum@gmail.com
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