Introducing the Absolute Hammer

[ButterBean]

Great info.
Looks like HV100 may not be fast enough. I'm wondering if Varget may be the answer.

I was gonna recommend the same thing

 

[wwac2]

3500 is what I get in my 6.5 Bee with the 127 LRX and 87 gr of RL33.
We should be able to best at least 3700 fps with the 123 AH

6.5x300 or 6.5x257?

 

[jpndave]

I'm seeing 50, maybe 60 fps advantage for the AH after optimizing for powder charge to the same peak pressure. Are there other reasons besides engraving pressure that would cause this bullet to achieve higher velocities? I don't see any setting for the amount of friction of the bullet after it's moving down the barrel. Would this even be a contributing factor, and if so, do any QL experts know if this setting is user adjustable? It doesn't appear to be. Any other thoughts?

I'm no QuickLOAD expert but would happily help any way I can. What about modifying the "Friction-proofed" setting to account for the reduced friction down the barrel. It seems to me it would be similar to Moly/HBN. Or possible bearing length? I know some of the bullets act different than others in the program. In the program the ELD-M seems to have less friction than the Nosler ABLR especially and even RDF and Bergers. I need to dive into the bullet files and see how they are different.

I would totally be up for collaborating on trying this out. Getting workable data from the results posted here would certainly save a lot of time, $ and barrel life getting powders narrowed down with a computer rather than real time. I'll shoot you a PM.

 

[Pdvdh]

I'd be surprised if the designers of QuickLOAD would know where to begin. If you tell them reducing the shoulder diameter of these copper monolithics to caliber land OD is allowing for an additional 300fps MV, they'd probably be as dumbfounded as everyone else.

Seriously doubt they could have any prior data that could have been factored into the design of their software to allow for modeling pressure vs MV of this modified bullet. How could they? Far as I'm aware, this is a new and novel bullet design, with no prior use or data. Maybe QL provides advice for bore rider bullets? IF so, that might be a start in the right direction.

But whadda I know... maybe they'll know how to model these bullets as well as any other pre-existing bullet design.

 

[MagMan]

Got my 178's. Any guess where to start in 300 RUM?

 

[CENTURY]

Got my 178's. Any guess where to start in 300 RUM?

Same question for a 30-378 ( ten twist )

 

[MagMan]

Might try H4831 and H4350. Trying to decide on a starting point.

 

[ButterBean]

Might try H4831 and H4350. Trying to decide on a starting point.

I would look at RL23, IMR4350 and 4831SC if it were me

 

[MagMan]

I'll start with RL 23

 

[GLTaylor]

I'll start with RL 23

All:
Please post results for benefit of all.
In working up loads for my 6.5-06AI I went through almost 100 bullets. This is highly unusual for Hammer load development. Usually it takes about a dozen start to finish! BUT! We're all flying blind with these new bullets.
Soon as I can, I'll commit to the first cut on trying to accumulate all the data gathered so far. Please be specific and complete with the data you post!
George

 

[Wedgy]

All:
Please post results for benefit of all.
Please be specific and complete with the data you post!

Great idea, maybe someone with more skills than I can start a file like on the Sherman thread ??

 

[MagMan]

All:
Please post results for benefit of all.

Certainly will. Also got some 155's for the 280 Ackley

 

[MagMan]

One thing I noticed right away is that the "step" from the drive bands to the start of the taper to the nose is noticeably different from the .284 155's to the 178 .308's. 155's being more noticeable.

 

[reeldawg]

I have some 123 AHs on the way. Going to try them in 6.5x47 and a 6.5 Sherman.

Jay