I would suggest you go back and edit your post and add the DISCLAMER required for posting untested / off the charts loads shown in posts.
Lee's load table says differently :
12 ga, 1.5 oz load, 1260 FPS .171 Bushing Blue Dot.
And thats for packed shot, which offers significantly more backpressure than a duplex load.
It is within a published charge and weight range. Johnnys stickie pertains to overmax loads- not untested ones. By published table, this is not overmax, although its testing is ongoing. The stickie mentions nothing about testing- just overmax/undermax.
When my loads ARE over published maximums, I DO denote them. This is not the case here.
What I will add here is that the recoil description I gave may be misleading.... it is considerably less than some of the steel loads I regularly shoot, and actually less than the PDX 1 by winchester- which is essentially a 7/8th oz slug with 3 #1 buck pellets. I swear they stole that, as the pdx1 for 12 gauge came out (from what I can see ) well after I began experimenting with that very same load.
Well, we can scratch that one off, too, as I've shot 20 more of them now. With a better crimp, they are all skipping along between 1210 and 1230. I settled on a .020 overshot card. Even'd that crimp RIGHT out.
In what shotgun was this load shot?
Mossberg 500. I don't have a piezo guide, but I do have a chrony. According to the charge tables I have, the load is within spec.
Load data for Lee slugs here >
http://leeprecision.com/cgi-data/instruct/SM 3529.pdf Pushing a lot more lead with less powder.
Yes, they use a lot more powder for a single pellet as the backpressure is significantly less, and more powder is needed to achieve the desired burn.
Unfortunately that data isn't valid- as this isn't a single pellet.
For what its worth- this isn't some wild idea I dreamed up last night- its been a project thats been ongoing for some time now. I'm glad most of the naysayers have decided to chime in now that I'm nearing the finish line. What was the hot button ? The word Blue ? Or Cool ?
This load IS the natural evolution of testing I've been doing FOR GOING ON 14 months now. I don't consider that untested.
Don't believe me ?
http://www.thehighroad.org/showthread.php?t=697814
http://www.thehighroad.org/showthread.php?t=663589
Untested huh ?
How about a year plus in the works ?
I'm using the exact same charge tables now that I was using then, and I'm some 800 shells into this- if it was horribly wrong, it would have announced that to me long, long ago.
I'll be happy to provide my version using a roundball. I settled on a .575 instead of a .650, and used 6 x .311 balls, an sp 12 wad, and 32 grs of HS-6. It feels and shoots identically. You can see the evolution of that load here :
http://www.thehighroad.org/showthread.php?t=711088
I don't think I ever got around to posting the 6 x 1 test results. That was during the period I was working 7 days a week, casting 4 nights a week, and shooting the other 3- I musta ran outta time. Of note, you can see a little bit of the naysaying going on there too.....almost looks........similar.......like DEJA-VU......... The bad results didn't happen then, either.
Does kinda make me wonder how much " yer gonna put yer eye out " some of the pioneers of loading and reloading got when they were going through their paces.
Believe me- I understand the process. I know the conventional wisdom and loading techniques. I've made quite the study of it, actually. The fact remains that if every single person stayed right in their comfort zone, and never experimented with anything, we'd still be stuck with 38's and .30-06.
I'm not saying i'm Elmer Keith, or Ackley, but unless we rub the edges of "conventional" wisdom a little bit- we'll never get anywhere at all.
Seems to me that some of that "
conventional wisdom" ain't so true at all :
Ultrasonic cleaning doesn't work real good.
You can't reload steel cases.
You cant shoot roundballs out of semiauto pistols.
You cant hunt with handguns. Hey- who killed that rumor........
You cant make the .30-30 any better than it was. Hey- who killed that rumor........
Some of the objections are well and truly noted.
Reality is, the load functions well, deploys the payload correctly, has an appropriate velocity for the charge and payload, and hasn't caused me to suffer any of the maelstrom of potentially negative consequences of substituting weight for weight appropriate components.
I go not blindly into this endeavor. I didn't pull this shot column, and this charge of powder out of a hat. I have a lot of data that backs up the evolution of this load. Data that is good enough for me, because I pulled the trigger to get every point of it. I've taken this duplex and buckshot loading thing from the BLOOP BLOOP BLOOP of powder charge failure- to the messy, factory style patterns of conventional buckshot loadings, to failed crimp style and buffers, and finally- FINALLY
to where I am right now. As a matter of fact, I specifically waited on the final evolution of this load ( 1.5 oz, blue dot powder) until I had a Chrony to evaluate its safety. Now I have use of one. SO, Into the night I went.
It isn't a cokckamamy scheme I want someone else to try first. I did. Over and over again. It works. It works repeatedly. I offer it here that others may try and duplicate the results I'm getting. Looks like i've got at least one experienced reloader who is even ready to try and best my attempts- and I look forward to the day he does, because thats how we get better.
Tested ? Well, I'm not a ballistics lab- thats for certain. But I do have a Chrony, a Face, and Two hands. My shotgun is yet unsullied by explosions, bent barrels, obstructions, or anything else untoward. The fact that I have all of these things ( and by gosh, have yet to shoot the chrony- please keep your fingers crossed) is testing enough for me.
If someone wants to offer up a set of piezo equipment, I'll be happy to buy the little do-dads you stick to the barrels.
