Try the All American Sun Oven, $300, Suspension grill supports standup boolit cookie sheets, heats to 360-400F, its standard issue for prepers.
https://www.sunoven.com/all-american-sun-oven/
may have to talk to smokes to make sure the powder will bake fully at the available temperature
ibjp3 similar to a thread on swaging cast boolits a few years back. An OP actually made one but no reports back I know of. Biggest problem appears to be the force needed to drive the boolit back out. You could cast/coat slightly small and use the nose punch force to swage the nose bigger as it exits. Friction and springback are a big problem. Thought of a split die or split on one side and clamped, release clamp to extract. Assume the GC is installed when body sizing first.
Whatever!
I spent a lot of time trying to figure this one out on 6.5
Scraped a lot of lead off of a lot of bullets, polished for hours and still scraped lead.
For some reason I thought to try the bullet in the back side of the bushing. It went in farther before it got resistance.
So I set things up to nose size into the back side of the bushing and scraped no lead!
There are things I don't like about the results and this may be a bad idea, but the technique can be applied to a good idea.
Getting closer.
Last edited by ibgp3; 05-27-2017 at 04:01 PM.
1. Nose sizing (268 to 257) puts a lot more pressure on the base than body sizing (268 to 266).
...install the gas check while nose sizing. Treat gently until locked on in body sizing.
2. NOE sizers are more accurate than LEE. (I'm told.) LEE sizers are more easily used than NOE. (I promise.)
...get both. I have ordered LEE sizers in .257 and .266 (Both custom) Bullet prep before PC will be done with LEE.
...final sizing after PC will be done with NOE.
...Different sizes for different rifles and experimentation are cheap and quickly available from NOE.
Input?
Anybody?
Last edited by ibgp3; 05-27-2017 at 07:23 PM.
For all the effort you are putting into this you might consider a custom mold that takes most of the work out of it. $80 delivered for a dual cavity mold isn't that much. Plus with slight alloy adjusted under sizing the mold design you can set the bore rider so you don't have the nose sizing problem and you can get rid of the grease groves. Again the sun oven will let you stand them up but only about 100 at a time.
38-55 is my ultimate target, this is for practice while I wait for custom items to be made.
The problem in 38-55 is that I have three different size bores and 4 different chambers.
I hope to adapt one mold to all four,...but maybe not.
The 309 PC boolit mold designs shown previously in this thread are now available from Arsenal Molds. This is the link to the rebated Boat Tail version, the GC version is just before it.
http://arsenalmolds.com/bullet-molds?product_id=178
The technology applied in this thread has migrated to 6mm where the centrifugal forces are less and you can get a better BC nose for high speed long range repeatable accuracy from a CU alloy GC PC Cast boolit.
Got to shoot the 31-165C HF red coated GC @ 200 yesterday. BDC scope on steel target - 2" 3 shot group - knocked over every time. LR308 carbine. Just trying to center the circle on the 10" plate. Found a 1/2x1/2" sliver with coating still on it.
Alloy is isocore/Cu sheared off edge has a lot of small waves on it, PC still intact with stress cracks. 1900fps & 1360 ft-# @ 200, according to nikon_spot_on SW. BC ~ 0.38 So it didn't shatter!
Attachment 206238Attachment 206240
Attachment 206312
Attachment 206313
And the pig I tested my soft Sb/Cu/Zn alloy on. It was downed with 40M&P, I got the other with BO but he ran away.
Last edited by popper; 10-21-2017 at 02:58 PM.
Whatever!
Bama's metallurgy and processing are very well suited for 6mm / 243. High speed and accuracy have been demonstrated in 6x45 and 6mm Creedmoor. The design above is now available at Arsenal Molds in up to 5 cavity. The drive band dimension with an added increment for the thickness for the GC base should equal the cartridge neck of the caliber you desire. This is an under specified core mold, so that when the PC is applied it is up to or slightly above full round specification. With the hardness of the alloy you will still be able to size it without using a swagging press. In Bama's process the keys are GC seating, pre and post PC sizing of the drive band and post PC sizing of the bore rider section. The net drive band length with the specification shown is 0.310 which is good for 6CM. The red numbers can be tailored with your mold order to match your caliber application. (PS Like popper once said this thread should have been a sticky)
This shows the PC bullet in comparison to the Hornady 108gr ELD Match bullet in the Creedmoor, with 308W and 223 casings. When you seat the PC bullet to the base of the GC is at the base of the casing neck you can see how much bore rider extends past standard ogive. This aids in accuracy and alignment. That is also why you size the bore rider section. The field verified BC for the PC boolit is 0.33, so using 44.0gr of H-1000 you get 2868 fps. This is still in optical hold over range on the scope out to 650 yards. The factory bullet has a BC of .536 and a muzzle of 2950 which carries the hold over limit out to 850 yards. So for a cast boolit that is not bad performance. Plus there is room for more powder and a lot more if you use IMR 8208 XBR.
I remember a long time back and geargnasher was on this forum (before I was) and I believe he and maybe Goodsteel were talking about some real dark brown almost black build up in the bore of their rifles but from using a certain bullet lube which unfortunately now escapes my memory. Someone might remember. I don't think your PC build up is an isolated case.
I know I am beating a dead horse, but those chasing the elusive accuracy at range with full power loads, found a while back that molds designed for lube just had too much metal to move for making a concentric powder coated bullet, without a lot of special tools and effort. So my hats off to any mold company that is willing to make molds suitable for powder coating; A big step in the right direction.
Has anyone actually procured and developed a load for this Boolit yet? Targets at 100 yards (or 350 Yards as per the start of this thread)?
I am interested in the boolit as I think I've wringed all the accuracy I can from HF Red coating on 311644, 311299, RCBS 200 Sil and RCBS 165 Sil cast boolits in my .308's and they do not get the accuracy I am seeking at higher velocities to date. (The RCBS 165 Sil has performed best). I am focusing on .308 caliber Swaging Dies at the moment so I am not interested buying an untested mold; looking for someone who has actually bought the mold and has Load data with it and some target pics from testing.
It's available with a 3-4 day wait time at: http://arsenalmolds.com/bullet-molds...it=99999999999
Mustang
"In the beginning... the patriot is a scarce man, and brave and hated and scorned. When his cause succeeds, the timid join him, for then it costs nothing to be a patriot." - Mark Twain.
BP | Bronze Point | IMR | Improved Military Rifle | PTD | Pointed |
BR | Bench Rest | M | Magnum | RN | Round Nose |
BT | Boat Tail | PL | Power-Lokt | SP | Soft Point |
C | Compressed Charge | PR | Primer | SPCL | Soft Point "Core-Lokt" |
HP | Hollow Point | PSPCL | Pointed Soft Point "Core Lokt" | C.O.L. | Cartridge Overall Length |
PSP | Pointed Soft Point | Spz | Spitzer Point | SBT | Spitzer Boat Tail |
LRN | Lead Round Nose | LWC | Lead Wad Cutter | LSWC | Lead Semi Wad Cutter |
GC | Gas Check |