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September 11, 2020, 08:57 PM | #1 |
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Running low on SPP? Try this...
This is going to cause some blowback. If you are loading .38 spl or +P or .357 to be used in a .357 revolvers, Small Rifle Primers work just fine. Load a few up just check to see if your hammer has enough power to strike the primer and set it off. Brisance of a SRP is about the same as a Magnum SPP, and they are exactly the same size.
Down to 2000 SPP to be used in other cartridges and had an excess of SRP and used them in the revolvers. Very slight increase in fps. which I assume corresponds to slightly higher pressure, and the harder cup proved no problem with the .357s. Trying 9mm bullets in .38 loads, be interesting to see if there is a loss of accuracy. Trying to use everything in my inventory to prevent spending outrageous money in todays market.
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September 12, 2020, 01:29 PM | #2 |
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Around me SRP are harder to get than pistol
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September 12, 2020, 02:59 PM | #3 | |
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Quote:
I recommend reading Allan Jone's article on primers. The differences between brands and the frequency with which the formulations change without being announced means all you can prove to a certainty is what current lots do. If you change to a magnum primer or to any other make of primer, drop your load at least 5% if not 10% and work back up, just to be sure.
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September 12, 2020, 03:16 PM | #4 |
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I took a look in my big box supply store today and they had a variety of Large rifle, and large pistol, but no small primers of any type.
I'm guessing all the small primers are being consumed by ammo production and none is getting to retail. |
September 12, 2020, 05:40 PM | #5 |
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Thanks Unclenich, I learn something new every time you write. I will read Jone's article on primers. I do charge the .357 loads at the start amount ( about-10%), no need to do so with the .38+p as they are being fired through a .357 revolver. Not trying to max out the .357 loads, just need some practice range ammo.
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September 12, 2020, 08:54 PM | #6 |
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wasn't there a post recently about SPP mags and SRP's being the same primer in a different box? Coulda sworn someone posted that. Anyway when the supply catches up just put a sleeve or or two when doing powder orders paying a hazmat fee just for times like these. Don't have to order 100K or anything stupid but a few extra sleeves a couple of time a year during non election years adds up
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September 13, 2020, 01:13 AM | #7 | |
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Quote:
https://thefiringline.com/forums/sho...70#post6811870 See post number 14. |
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September 13, 2020, 03:11 AM | #8 | |
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here is the thread/post I was thinking of
Quote:
https://thefiringline.com/forums/sho...&highlight=cci
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September 13, 2020, 07:27 AM | #9 | |
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Quote:
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September 13, 2020, 08:16 AM | #10 |
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argue that with UncleNick if you want an argument, he posted that 2 months ago. I have plenty of both types could not care less at this point
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September 13, 2020, 08:21 AM | #11 |
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September 13, 2020, 08:31 AM | #12 |
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it's the same thread, his post 21 is what I cut and pasted
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September 13, 2020, 08:50 AM | #13 |
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I'm sorry you can't understand what you're reading.
They are two different threads. Here's what he posted July 31, 2020 in the thread i linked, "My information was outdated I just spoke with CCI, and learned my previous information is out of date. Apparently the designs have changed since I last spoke to CCI about this (still can't recall how long ago, so I don't want to guess and give someone bad date/age information). The current information is that CCI 550 and 400 primers now both use different priming formulations and have different quantities of priming mix in them and also that the current 400 design uses a thicker cup than the current 550 design. So what I said before should be ignored and attempts to use the 400 in place of the 550 will require new load workups. I think CCI is exaggerating to say, as the tech did over the phone to me, that the substitution is playing with dynamite. I have never seen primers cause that much difference, but there may be some funny circumstances where this can cause a problem, so caution is important." |
September 13, 2020, 08:55 AM | #14 |
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my apologies, I should have read farther on.
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“How do I get to the next level?” Well, you get to the next level by being the first one on the range and the last one to leave.” – Jerry Miculek |
September 13, 2020, 10:45 AM | #15 |
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All my revolvers and lever rifle (.357) use SRP's , been doing this for years now with no ill effects, all you need is a good hard smack on the primer and it will work just fine.
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September 13, 2020, 10:57 AM | #16 |
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In the one 9mm load I tried with different primers, there was NO difference in velocity with 7 out of the 8 primers tried, rifle, pistol, magnum, standard. The one slightly higher was with Remington small pistol.
Before they started making magnum pistol primers, Federal recommended their small rifle for .357 magnum. I have quit worrying about it. I don't load to maximum and don't have to "work up." By the way, how do you "work up" a pistol load? How do you know you are enough "up?" The "pressure signs" that people think they are seeing in a rifle are indications of gross overload in a handgun. I use a gun and a chronograph for three levels. 1. Just enough to cycle the slide on an automatic. 2. Power factor for IDPA and USPSA. 3. Factory equivalent. If I can't equal a factory load at a published powder charge, I use something else. |
September 14, 2020, 09:45 AM | #17 |
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I don't have a chrono, so I do it the old fashion way, I go by best groups from the various powder charges up to max load from the powder manufactures data.
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September 26, 2020, 09:13 PM | #18 |
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Anyone have a source for SPP right now?
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September 27, 2020, 04:52 PM | #19 |
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Saw them at a gun show today in NE TN, $100/1000. NO!
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