Why is it called a "Boattail"?

[3Ackleys]

Why is it called “taking” a piss when you are actually leaving it in the toilet?

So many philosophical questions that are incomprehensible by the human mind…

And why is it called a double U, when it is a double Vee? W

 

[WSnyder]

And why is it called a double U, when it is a double Vee? W

My handwritten double U’s look like double U’s and not double V’s ???

 

[Tangent]

I'd say most major discoveries are accidental whilst conducting practical experiments. That's where I would start. Make some new designs and shoot them, no arguing with the results. Theory is a great starting point but nothing beats real world testing

 

[Ledd Slinger]

I'd say most major discoveries are accidental whilst conducting practical experiments. That's where I would start. Make some new designs and shoot them, no arguing with the results. Theory is a great starting point but nothing beats real world testing

His website says they’ve been fully tested. I just want to see the test results and testimonials on long range accuracy.

 

[Webster]

I think they eventually will. Or maybe I just hope they will. About 50% of rifle bullet drag is due to the base flow problems. About 120 years of study has gone into the nose design but I'm the first knucklehead to attack the base flow with math.

Less drag means a flatter trajectory (less drop) and less wind error. IT also extends the effective range of the weapon. I estimate that I could extend the effective range of the M4 out to over 500m with a aerospike tail.

Shoot a few and prove it.

 

[HappyHellfire]

Yeah good point on states with lead restrictions. Do you have any targets from testing any of your bullets at long range?

Not yet. My radar only can track out to about 100 yards. I've been focused on getting them stable and fully characterizing the drag curve. I'm hoping to catch the interest of a few competitive shooters to try them out form me.

Shoot a few and prove it.

I agree. I've shot a bunch. I'd like some of y'all to shoot them and give me some feedback.

 

[HappyHellfire]

His website says they’ve been fully tested. I just want to see the test results and testimonials on long range accuracy.

Working on it. If you know someone to recommend I'd appreciate it.

 

[quest450]

@HappyHellfire did you use tuner and wind flags in your testing ?
If you didn't your bullets will never shoot !!

 

[HappyHellfire]

@HappyHellfire did you use tuner and wind flags in your testing ?
If you didn't your bullets will never shoot !!

Sorry, not sure what tuner is. Use of wind flags to estimate wind error is pretty common though. Cross range wind error is normally calculated by the lag rule. You calculate the time of flight and subtract it from the time of flight at the same range for a vacuum trajectory. The difference between the two is called the lag time. The lag time times the cross range wind velocity give the cross range deflection.

Aerospikes have lower lag times (especially at longer ranges) and thus should have lower cross wind error.

 

[tillroot1]

You are right about comparing copper and lead core. I hope to buy the swaging machines in two years and start with them but until then the solid copper are just so much easier to get out of the gate with. There is also several states that require lead free bullets that I might be able to fill the gap until then.

is that just for hunting? or complete ban on lead for everything? I dont know of any states that have banned shotguns or .22 LR yet??

 

[tillroot1]

LOL

what would those identify as? what pronouns would they use?

 

[Dave M.]

I’m sure you are the first guy to study the boat tail shape….seems like a logical assumption. I’m sure Berger and Sierra never once thought about the boat tail shape and never performed any CFD on their proposed bullet shapes. Your posts are awesome, please keep them coming, this is exactly what I need in my life right now.
Dave

send me a free box of 50 of the 6.5mm pills and I would be glad to shoot them against a similar competition bullet (although 102gr is a little light for a 6.5CM competition bullet, 140gr ELD-M pills would be more appropriate).
I can’t believe you are trying to sell a new bullet design and your website doesn’t have a single shred of comparative testing showing actual results on target. Do you just expect everyone to take your word for it??
Dave

Hellfire,
I’m shocked you are not taking people up their offer to do a comparator be shoot off between your bullets and the closest high quality offering from Berger, Sierra, Hornady or custom makers like Bart’s. It’s going to be a super tough sell for you peddling your bullets that are more than 2X the price of the best bullets on the market today, with little to no actual proof of concept and comparison targets. My offer still stands Hellfire, and I’m awaiting your response.
Dave M.

 

[Dave M.]

is that just for hunting? or complete ban on lead for everything? I dont know of any states that have banned shotguns or .22 LR yet??

Michigan has banned lead for duck hunting but I know many people that refuse to convert.

 

[Dave M.]

Not yet. My radar only can track out to about 100 yards. I've been focused on getting them stable and fully characterizing the drag curve. I'm hoping to catch the interest of a few competitive shooters to try them out form me.

I agree. I've shot a bunch. I'd like some of y'all to shoot them and give me some feedback.

Send me a PM and I’ll give you my address to test some for you. I continue to ask.
Dave

 

[HappyHellfire]

Hellfire,
I’m shocked you are not taking people up their offer to do a comparator be shoot off between your bullets and the closest high quality offering from Berger, Sierra, Hornady or custom makers like Bart’s. It’s going to be a super tough sell for you peddling your bullets that are more than 2X the price of the best bullets on the market today, with little to no actual proof of concept and comparison targets. My offer still stands Hellfire, and I’m awaiting your response.
Dave M.

I'll find another shooter. Thanks for the offer.

 

[Ledd Slinger]

Working on it. If you know someone to recommend I'd appreciate it.

Not yet. My radar only can track out to about 100 yards. I've been focused on getting them stable and fully characterizing the drag curve. I'm hoping to catch the interest of a few competitive shooters to try them out form me.

The 30 cal is so light I’m having trouble seeing how it can have a high BC for long rang competition shooting. Tho I’m assuming that’s geared more toward the 300 BLK so that wasn’t the intention with the design. In that case, maybe you send those bullets to the black rifle plinkers to test and see what they come up with.

Perhaps the 6.5mm would be ok, but that one also concerns me for long range when I look at your design against a something like a Berger 140gr VLD with a proven track record for excellent trajectory and accuracy. Lack of a stated BC doesn’t help your cause at all either. I know your site says you can’t calculate BC, but I’m not really buying that. If you are actually shooting the bullets at long range like the website implies, you can calculate BC. You can calculate BC for anything flying through the air with the right amount of testing data and mathematics. I could calculate the BC of identical rocks being thrown by hand so long as I could maintain good accuracy and a constant speed

I just think it’s gonna be tough getting people to try them without some sort of real world rifle data to show us first when there’s bullets out there shooting 5 shot groups under 2” at 1,000 yards. Reloading components are a precious commodity and time is very valuable, especially being that the competitive shooting world is in full swing for the summer.

 

[jelenko]

Cross range wind error is normally calculated by the lag rule. You calculate the time of flight and subtract it from the time of flight at the same range for a vacuum trajectory. The difference between the two is called the lag time. The lag time times the cross range wind velocity give the cross range deflection.

Sorry. From the perspective of a competitive shooter, my reaction is 'WTF?'.

Someone asks you if you used wind flags and you quote a description of the physics?! Your response is a) meaningless to the vast majority of members on this forum and b: seems like another example of little to no actual shooting experience. Without that experience, you're going to have a very difficult time connecting with people on this forum.

Assuming you need/want feedback from real world competitive shooters, you need to team up with someone who is known in the competitive world. A fellow named Brian Litz comes to mind - he is pretty familiar with ballistics and might appreciate your technical side.

Other options would be to identify top competitors in a discipline that you think your design would provide a competitive advantage. PRS comes to mind as their course of fire is designed around targets at various distances. A bullet with significantly flatter trajectory could be a competitive advantage.

All you need to do is to convince one top competitor to try your bullets [at your cost]. If there's an actual competitive advantage, guaranteed he will use some in an upcoming match. If he wins that match, word of mouth will drive buyers to you.

 

[1911nut]

Sorry, not sure what tuner is.

Something you might want to look into.

 

[Bill Norris]

Sorry, not sure what tuner is.

Hard to believe he knows nothing about tuners with as much education as he claims in the bullet/shooting field.

 

[quest450]

where the hell is the tuner guru ? MIA