A R & cast

[Alberta Separatist]

my buddy has a .223 with a 14" barrel.
He would like to shoot cast and asked me to make up a few test cartridges for him; I use a Lyman 225415 and load 6 grains of Winchester 231 in my CZ 527.
I have a 20" barrel and it performs reasonably well with 1& 1/2 @ 100 yards.
Anyone have a suggestion for his situation?

[JonB_in_Glencoe]

Lot's of info in this thread
http://castboolits.gunloads.com/show...load-data-help
I posted some range results in post 44

[upnorthwis]

Most likely an AR will not cycle with 6 gr. WW231. I use 22 gr. AA2520 with the RCBS 55 gr Flat nose. Brass must be trimmed so that bullet can be crimped for feeding without pushing bullet into case.

[Alberta Separatist]

I noticed on the Hodgdon burn rate chart that AA2520 is@ 96; we can't obtain that powder here in Calgary; but Winchester 748 is available and is 100 on the burn rate scale.
wondering if 19 - 20 grains of 748 would make an accurate/functioning load?

[runfiverun]

yes.
use a filler for best results.
19 grs of 4895 is on the cusp too.

[Jupiter7]

yes.
use a filler for best results.
19 grs of 4895 is on the cusp too.

18grains cycles my carbine length guns.

[trixter]

Received my .225 die and punch set from Chris Smith and installed them in my Star sizer. It took a while for the lube to fill the die and then we were off and running. Placing gas-checks and running them through the machine. I did about 100 and then ladder loaded 5 for the AR. Will test them this morning.

[runfiverun]

might wanna weight sort them into small groups [I use .1 weight groups]
before getting too carried away.

[trixter]

Update: My ladder testing has gone as planned, There will be more testing this weekend.