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Author
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Topic: A little help
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Paul Melching
Radical Operator Forum "You won't get past the front gate"
Member # 885
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posted November 01, 2015 05:24 PM
I'm reloading for my 6.8 spc. brass is expensive and not always available so I get it at a good price when I Can. I usually buy new from silver state as they are the mfg. recently I bought some once fired mixed stamp some of the cases are small rifle some as Hornady are lg. rifle. How does this affect my loads if any at all. does the primer make a big difference in load. I didnt see reference to primer when looking up loads.
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Those who value security over liberty soon will have neither !
Posts: 4188 | From: The forest ! north of the dez. | Registered: Jul 2006
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DAA
Utah/Promoted WESTERN REGIONAL Hunt Director
Member # 11
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posted November 01, 2015 07:38 PM
Paul, I would expect that it will make some difference. Pressure or accuracy or both. But just how much I can't say.
- DAA
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"Oh yeah, they're gonna talk to you, and talk to you, and talk to you about individual freedom, but they see a free individual, it's gonna scare 'em." -- George Hanson, Easy Rider, 1969.
Rocky Mountain Varmint Hunter
Posts: 2676 | From: Salt Lake City, UT | Registered: Jan 2003
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Paul Melching
Radical Operator Forum "You won't get past the front gate"
Member # 885
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posted November 02, 2015 01:58 AM
It seems that most mfgs. are using a small primer I think Ill just toss the large primer stuff ouch ! Im a cheap bastard ! Thanks Dave I try to load for consistency I don't care about hot rod speeds and such just want them all to do the same thing.
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Those who value security over liberty soon will have neither !
Posts: 4188 | From: The forest ! north of the dez. | Registered: Jul 2006
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knockemdown
Our staff photo editing Guru, par excellence
Member # 3588
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posted November 02, 2015 05:14 AM
Paul, I useta have a wildcat that used necked down 6.8SPC brass. IIRC, the small primer pocket SSA stuff had marginally more powder capacity than did the Hornady stuff...
Given that, switching from SSA to Hornady brass with the same charge would likely result in higher pressure. Ignite the same amount of powder in a smaller space, and it'll make more boom...
Also, the large primer Hornady stuff will have less brass in the case head/web, so that might also result in more case head 'stretch'...
Finally, the spark itself! A LR primer is gonna give more ignition, which will affect powder burn characteristics...
There's 3 strikes I can think of for NOT running the same load with different 6.8SPC brass!!!
BTW, if you need some SSA stuff, I might have some new in a bag. No longer have use for it, so its yours if you'd like?
Posts: 2202 | From: behind fascist lines | Registered: Mar 2010
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Leonard
HMFIC
Member # 2
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posted November 02, 2015 09:07 AM
I don't see a problem?
As a matter of course, I always segregate my brass, regardless of how minute' the difference.
So, you develop a load with small primer and do the same with the large rifle primers. Not a big deal and I would be very surprised if the difference in performance amounts to a hill of beans. But, still keep them separate.
Good hunting. El Bee
PS oh wait! is this a machine gun? Doesn't matter much, does it?
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EL BEE Knows It All and Done It All.
Don't piss me off!
Posts: 31465 | From: Upland, CA | Registered: Jan 2003
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Paul Melching
Radical Operator Forum "You won't get past the front gate"
Member # 885
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posted November 03, 2015 12:15 AM
Thank you for the input the bigger problem to me would be the case size more than the primer that is going to change the performance for certain. The volume could cause real problems on the higher end of things. Thanks Fred for that little tidbit I have not been able to find much info on this subject you guys are a wealth of knowledge.
I don't vary much from the books as far as loads go. Don't own a chrono , and as sharp as I am I cant tell the difference from 2800 fps and 3800 fps they are both damn fast. when I find a bullet I want to use I will load 5 from the bottom 5 from the middle and 5 from the top of the load range and the best performer is where I start adjusting. I was taught to write everything down and memorize nothing always refer to the book or notes. That is what I was taught so far I have not blown my face off.
Leonard its funny that just after my post about tossing the lg. primer stuff I came to the same conclusion as your post about trying to load to the same result in each batch. I seem to have a lot of the lg. primer stuff and the Jack Benny in me just hates to toss it even though its a pain to keep sorted.
I had a Machine Gun that was a ragged hole shooter.
Granted it was one of a kind haven't had one since.
Again Thank you for your help confirmed pretty much what I thought but wanted to hear from the experts.
Fred while recovering I have started making knives mostly primitives but good quality useful kinves I don't own the equip. to make precision stuff I will send you a knife for your brass. Deal?
[ November 03, 2015, 12:18 AM: Message edited by: Paul Melching ]
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Those who value security over liberty soon will have neither !
Posts: 4188 | From: The forest ! north of the dez. | Registered: Jul 2006
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knockemdown
Our staff photo editing Guru, par excellence
Member # 3588
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posted November 03, 2015 04:30 AM
Paul, whatever brass I have, consider it a token of appreciation for hosting the Ronde out at your spread.
Lemme scrounge around and see what I've got. Can u email/text me a shipping addy?
[ November 03, 2015, 04:35 AM: Message edited by: knockemdown ]
Posts: 2202 | From: behind fascist lines | Registered: Mar 2010
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Leonard
HMFIC
Member # 2
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posted November 03, 2015 05:02 AM
There is nothing wrong, and much to recommend in segregating your brass. Even if it is not something obvious like the difference in large and small primer pockets. If it is only volume, ascertained by weighing, then I scratch the case head with a carbide scratch awl. Just a slash in a certain spot between the stampings is all you need and then you can toss all of it in the tumbler and weed them out afterwards. That mark will persist for many years when you know where to look for it; like (6.8 l spc). I do it all the time when starting out with new virgin brass and weighing a couple hundred cases in the same lot number. In my case, I like to mark the 50 lightest, the fifty heaviest and 100 in the middle. Those marks will persist through a dozen reloadings.
You may not appreciate the slight difference in performance until you start banging steel, but you will always know what you have and what to do about it. For those less anal than myself, go ahead and have fun. But, knowing that the large primers group a half an inch lower than the small primers may be of benefit, one day.
One thing you can say about fastidiousness, as it applies to handloading, IT NEVER HURTS. Yes, it MAY not have value in many applications, but it never hurts.
By the way, this stuff of 5 lower and five higher and five in the middle. I'm not on board with that kind of crapshoot. You start low and work up; PERIOD.
Good hunting. El Bee
[ November 03, 2015, 05:04 AM: Message edited by: Leonard ]
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EL BEE Knows It All and Done It All.
Don't piss me off!
Posts: 31465 | From: Upland, CA | Registered: Jan 2003
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