SHERMAN MEGA LINE

I agree with most of what you say except for the safe comment. How do you or anyone know whats safe without pressure measuring data??? Assuming something is safe does not make it safe and if you have to run harder brass to do this then is it really safe?

There is a well known member on this site that years ago - and still may claim that he can get 3300 fps out of a 28N 195 Berger with a 26" bbl with no pressure signs. Then in another thread when asked about Nosler brass he complained that he only gets 3 loadings at the most out of his 28N brass. Uhhhhh, thats over pressured!!

I have no dog in this fight but criticizing someone with an differing opinion is ridiculous. This subject is SUBJECTIVE at best because without pressure data nobody really knows.

If 70K+ pressure is ok in your book then go for it. I ran a few predictions earlier based on expected case capacities and only the 7 mega with a 195 would be under 70K. I asked for more info on these cases but for some reason, crickets. The website shows no case dimensions or case capacities at all. Why is this?
Nobody that I know has pressure equipment although maybe a couple on here. But how is it everyone on here handloading doesn't blow themselves up? We all need to use common sense here and I for do not just take someone on their word. We don't have exact rifles and even then they will be different. I leave the testing up to the load manuals and from what I know there are pressure signs in some cases that show even before book max. As there can be that one out there with slightly different chamber specs that do not come close to what book max says.
 
Well since the rails are miles behind us now, what are the odds Rich would work out some kind of 6.5 PRC improved? Something like what you did with the 300 PRC where a guy can shoot factory ammo in a pinch?
 
Nobody that I know has pressure equipment although maybe a couple on here. But how is it everyone on here handloading doesn't blow themselves up? We all need to use common sense here and I for do not just take someone on their word. We don't have exact rifles and even then they will be different. I leave the testing up to the load manuals and from what I know there are pressure signs in some cases that show even before book max. As there can be that one out there with slightly different chamber specs that do not come close to what book max says.
I never said everyone should have testing equipment. But if I was in the business of selling a cartridge line that I developed I would definitely know this needed data. When I did load work ups for customers and their rifles I would always give them a print out of everything they needed to know about that final loading and stress that it was only good for their rifle. This is why I never give a powder charge when asked for load data but will instead give a velocity range range to load for and only with bullets jumping - never jammed.
 
Well since the rails are miles behind us now, what are the odds Rich would work out some kind of 6.5 PRC improved? Something like what you did with the 300 PRC where a guy can shoot factory ammo in a pinch?
That would be a good idea for someone to tackle. Then the current problem with 6.5 PRC Chamber specs / sizing die specs could be addressed with a new properly dimensioned improved reamer & dies.
This would allow using factory ammo.

Although I believe Rich currently has better 6.5 case designs. & may have no desire to
Straighten out somebody else's goof.
 
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Rich, first I'd like to apologize for further derailing your thread but it's already been thoroughly derailed and your going to have to start a new one anyways for the MEGA line of cartridges.

How many guys here actually understand how SAAMI MAP numbers are come to for a commercial cartridge? How many know what modern firearms manufacturers use for Proof loads and what pressure they generate in a firearm as a minimum pressure standard for safety? This isn't pointed at guys on this thread but in general on this forum and to reloaders in general. I'd venture to say not many at all do and that is something that needs to be taken into account with published numbers and data we give out.

These questions are things that need to be known and understood before pushing above published numbers in reloading manuals and there is a lot that goes into both of these processes SAAMI MAP numbers and modern firearms Proof testing. I've been involved in some testing that I can not disclose due to NDA's (non-disclosure agreements) but if you research the two things I just referenced and actually understand them you will be able to make more educated decisions if you decide to go beyond published data.

Pressure does equal velocity but it's pressure under the curve or total pressure exerted on the projectile in a confined environment, not necessarily max chamber pressure. The number of things that effect chamber pressure and pressure under the curve is vast and beyond what I have time to post.
Big amen on your last paragraph!!
Thats why I dont pay much attention to " all cases are equal" or "pressure is pressure", etc.
 
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not taking sides here as we are all family here, family of misfits, lol

Elkaholic has a valid reason for stating his velocity predictions as I'm pretty sure he has vigorously looked indepth into his project before going public

some of you may not have noticed that he mentioned a case of new design, so I'm guesing he's drawn up something a bit bigger in diameter than the SAUM/WSM cases, (like what I've done with my Razor cartridges) and will have RCC make the brass with a thickened case head along with their proprietary inner case design that adds velocity, a case of that design with 86 gr of capacity could very well achieve his velocity predictions, which he clearly stated several times were estimates btw !

This I back up with experience as I have been working with a 30 caliber 85 gr capacity case based on the Lapua/Norma brass cut down to 2" with a trim to length @ 1.990" ,

with Norma brass I got 87 gr h20, Lapua brass is at 84 gr and the final product fromm RCC is right at 85 gr

anyway, all the velocities Elkaholic predicted were attainable with my cartridge and I'm confident his design will fare the same
 
I wont be posting any more here but for all who are interesred, you can join the forum on FB "Sherman Wildcat Cartridge group".
You can email or pm me from shermanwildcatcartridges. com
or just call me at 208 755-6723
I'll be happy to help and answer questions.
I apologize for letting things get to me and saying things I normally wouldn't say.
My bad! It just gets old so I've learned if there are things in life that cause you or others to stumble. Avoid them.
God Bless you guys! 👍
 
I wont be posting any more here but for all who are interesred, you can join the forum on FB "Sherman Wildcat Cartridge group".
You can email or pm me from shermanwildcatcartridges. com
or just call me at 208 755-6723
I'll be happy to help and answer questions.
I apologize for letting things get to me and saying things I normally wouldn't say.
My bad! It just gets old so I've learned if there are things in life that cause you or others to stumble. Avoid them.
God Bless you guys! 👍
You better mean your done posting on this particular thread and not LRH!!!
 
I am not one to get into arguments in these forums but this seems unnecessary. Ryan is very experienced as a reloader and is clearly using sound judgement that it seems overly optimistic on the expectations. Rich has definitely been able to squeeze out some great efficiency out of the cartridges he has focused on but physics is rarely defeated and efficacy of heat builds pressure in a given volume and that is fact. All Ryan Is suggesting is to not be dangerous in the desire of performance.

What you guys are missing is that he went all petty and started insulting members of this forum that disagreed with him.
That kind of crap really tells you a lot about a person, he can just keep it to himself for all I care 🙄
 
I wont be posting any more here but for all who are interesred, you can join the forum on FB "Sherman Wildcat Cartridge group".
You can email or pm me from shermanwildcatcartridges. com
or just call me at 208 755-6723
I'll be happy to help and answer questions.
I apologize for letting things get to me and saying things I normally wouldn't say.
My bad! It just gets old so I've learned if there are things in life that cause you or others to stumble. Avoid them.
God Bless you guys! 👍
Sorry to hear you won't be posting here again. Some of us don't do Facebook and wouldn't consider it now with how bad facebook has treated certain people. Good luck with your work.
 
Everyone appreciates the knowledge of another when they display it properly. There's an unending list of members here that clearly fall in that category. What nobody needs is a condescending individual with the mentality that they are superior in knowledge. I treat everyone as if they are my equal in knowledge without looking down my nose at there loading practices. If I'm asked advice, I give it if I can. I certainly ask for it but nobody wants to be told they are dangerous and reckless in their loading practices just from a comment. They can take that mentality elsewhere.
 
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