Author Topic: 12GA FH(From He!!)  (Read 58030 times)

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Offline hubel458

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Re: 12GA FH(From He!!)
« Reply #420 on: May 26, 2013, 09:30:54 AM »

What causes sabot problems/inaccuracy. Some pictures will help.
First 2 shows a skinny post that pushes on a cushion or sabot
bottom and it can bend or deflect which if that way when exiting
barrel can start sabot or slug crooked.








And more important item that can cause  lack of accuracy is if
base of discarding sabot tapers or steps down so that it isn't real
tight as it leaves bore, which can allow it to be cocked.
On the left is our sabot which has base right and other brand
which tapers a bit. Easy to see.





Next is a ball and slug load in 2 of our sabots. A 285gr .575" ball
flattened, put in the bottom and  400gr Minie above, two different
styles of Minies.





Here is couple 16ga discarding sabots I made from the undersize
12ga grey ones. Didn't have to take off much. Much better use
for them. I made them, after Paul in Alaska asked about
where to find 16ga ones, to see what they looked like.
They still use 50cal slug.. Ed







 

Offline hubel458

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Re: 12GA FH(From He!!)
« Reply #421 on: June 21, 2013, 05:19:34 PM »

Here is 16ga discarding sabots made from grey ones with other 16ga slugs..
20 ga factory sabot on left for comparison.





Here is picture of 12ga wads showing good and bad support.





Here are 2 sabots on the right with super heavy tungsten slug. It is 1100gr,
but tungsten costs ten times what lead costs.





Here is a sabot home defense or close range defense load setup using our
sabot. It has  five  flattened 45cal balls in it. Flattened into a fat disc weighing
145gr each. You'd star crimp it or use card over them and roll crimp. Like
having a bunch of supersize flat buckshot, only super big.





Here is comparison picture of the 58cal slugs used in our 12ga sabots, with the
puny slugs used in many other sabots. And we've moved 5500 of the sabots.
Deer season is coming fast. Maybe time to get loads tested/sighted in is now.





Some more figures. The 24hr Campfire forums is first one, with our 12ga FH thread,
to get over half million  thread  views.The HighRoad  second.
TheFiringLine  third. AR fourth...Ed


Offline hubel458

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Re: 12GA FH(From He!!)
« Reply #422 on: February 21, 2014, 07:07:09 PM »

Some guys in 12ga like to use the Magtech brass cases
but the cases being brass the sides are thinner than
plastic, and that makes loose fit in 12ga chambers.
And case expand a lot and are harder to resize,
But I found that .750 hollowbase 10ga slug fits
those cases and still chambers ok. Not a sloppy fit.


So If you have a 12ga smooth barrel with full length
backbore job,  of .850" bore or bigger you could use
the Magtech brass and ,850" size 10ga hollowbase slugs.
Now these .850" slugs won't go in a 12ga plastic case
and chamber in regular 12ga chamber.


Brett in MN used the a BPI AQ slugs in his full length
backbored 12ga and got fair accuracy as he said the wads
under slugs expanded a lot for a decent fit.
The 10ga slug shown in the 2.5 inch Magtech is 800 gr,
and .850" diameter. These cases will take magnum
pressure so you can get good speed, for what this short
case can hold.


It is too bad they don't make 3" and 3.5" versions.
These 2.5" cases are easier to find and much less than
others, so if needing brass ones you can rig up guns
to work with them. To build a new barreled gun in actual
12ga size, IE .729" bore, you'd make chamber to
minimum specs so cases don't over expand.
In the picture are 2 10ga slugs on right, like in the case,
and 2 12ga jacketed slugs and one 12ga lead slug left.ED




 






Here is the ytube URL again for our guy
shooting 585HE in his NEF----By mid summer we plan on a
pickup truck load of more 585HE cases coming in.


http://www.youtube.com/watch?v=HypaUdwQGAc