I'm just curious if there is any interest in talking CBA accuracy level stuff. Like they do on the CBA or Cast Boolets websites...

Rich
DRSS
Knowledge not shared is knowledge lost...

Shooting BR with cast bullets would be a very challenging sport. If I had a whole lot of time, I would try it. I have hard enough time with jacketed bullets, but you add cast bullets to the mix, and the variables just trippled almost.

What alloy to use, how hot to pour the lead, which lube to use, size the bullet or not, gas checks or not, the list never ends..........

that's the never ending challenge...sort of like being married.

Rich
DRSS
Knowledge not shared is knowledge lost...

I saw on another forum that a gentleman named Marlee Parks in the state of Washington has a 6mm he shoots with moly-coated cast bullets without lube rings (a 80-10-10 alloy) and the rifle consistently shoots 1/4" at 100 yards. Fascinating idea.

I'm chasing that story down, just got sent his Email address. I am going to contact him. If he can get 1/4" groups at over 3000fps he is my new hero!

Rich
DRSS
Knowledge not shared is knowledge lost...

"consistently gets 1/4" groups"

Just put me down in the highly skeptical column.

Well,...... here's something I tried. Cast bullets, gas checked and lubed - loaded into an unsized case using a lubed paper sabot arrangement. This was in my hornet with full house loads. Recovered bullets showed no stripping or flame erosion. The rifling marks were clean and sharp. There was no leading of the bore, even though it is rust damaged! Groups were no worse than jacketed bullets - definitely not BR standard but then again I did not pursue this. I tried the same thing in my 303 with lead pistol bullets. Again, clean rifling cuts and no leading but I did not range test it. Nor did I manage to capture the faster bullets intact, but the bases were clean and sharp. Maybe someone with a decent gun would like to give it a try. (The paper sabot is made from paper hand towel, cut into a cross and inserted into the case mouth with the nose of the bullet, then dipped into molten lube and the bullet quickly seated).

P.S. I have also produced some good reasonable groups from the same rust damaged hornet using a tight fitting cardboard wad under the same paper sabot and a jacketed bullet. The wad does not work with a boat tail. And then - nothing to do with cast - I have been able to drive a 60gr bullet from the hornet with this technique, halfway through a half inch steel plate. That's using Lil'Gun - it takes 10% more Li'Gun to produce the same pressures as would be with neck sizing with the same bullet. That bullet gave me a 3/4 MOA group at lower velocity and neck sizing (and made a crater in steel half the depth.