Recent content by noel carlson

"Can I run your bullets through a conventionally rifled barrel?"... No.

"I think maybe the question that is better to ask is what kind if barrel do I need to stabilze your new offering and what kind of twist is it?"... The barrel needed to stabilize the new ZA338 is a variable gain-twist, in an .008" oversize 338 bore dimension. Rifling geometry is in a twist...

ELR Researcher, "What twist rates do these bullets require to keep them stable?"... The ZA338 used in this test is compatible with standard bore/groove dimensions, and is a two year old design that will never be publicly released. Therefore; in a strict sense, the specific answer to your...

I am not a paid advertiser on this site... so in keeping with forum rules, my comments will be limited to a technical discussion. John has graciously offered to contribute his time/resources in assisting with the development of a Mach 3+ loading for the ZA projectile/barrel "system". All...

Yes, Contact me again if you need more details.

Topshot, "Noel, strictly speaking CEB bullets are "Copper" tacks!................. LOL. :D "... True, I need to resist the temptation to post when distracted.

"I have enjoyed Greg's videos and those 425's look very impressive... "... Yes, I have commented to Greg on the quality of his videos also. "... shooting them head to head at the same velocity should settle the matter."... With mass held constant, I agree. "Do you have any videos of...

Greg, How close is my estimate on the nose length?

"By 'bearing surface as you defined it' do you mean the bore rider?."... Yes. "... so therefore IMHO are "something to get excited about"... Under the present circumstances, that is understandable. :)

Hello Paul, I think that it would be against forum rules to respond publicly. Montana, I found a good ISO-photograph of five CE 375's laid out in order of ascending weight: - 325 gr. - 350 gr. - 375 gr. - 400 gr. - 425 gr. They differ in only one dimension... the bearing...

It dawned on me that you might not know how to convert bullet dimensions to calibers. If a 30 caliber bullet has a nose 0.90" long, then: .90/.30= 3 calibers No manufacturer that I am aware of will make these conversions for you, but it helps immensely to visualize a projectile's aero...

"In any case their bullet doesn't fit the standard paradigm because of the bore rider."... This is simply not true. "...the front portion of their bullet is essentially a smaller caliber than the rear portion."... And the engraving depth is a different caliber than the non-deformed surface...

"I'm not so sure I agree that there is "no difference". The bore rider is .300 and the aft bearing surface is .307 That's the difference between a .284 and a .277 Not a lot, but something and it basically boils down to a more slender nose blending into the .300 rider vs a .307 bearing...

"Maybe you are including the bore rider in front... "... Yes, I am. From an aero-ballistic standpoint there is no difference. Ability to overcome wave-drag comes from ogive length (primarily), and ogive form (secondarily). There is no aerodynamic efficiency "credit" for a long projectile...