RCBS 22-55-SP in .223

[ChuckS1]

Read the excellent articles by beagle and I still am having a dickens of a time finding an accurate load with this boolit in my CZ-527 with its 1-14 barrel. Been using Bullseye and Unique and just can't seem to find anything that shoots less than 3" at 100 yards. Any suggestions? Thanks.

[GabbyM]

That's a fairly long bullet for a 14" twist rate. Ones I traded for are about 60 grains from half WW half Lino.

CZ 223's I've seen advertised all had 1-12" twist rates with 1-14" on the 222 caliber.

First thing I'd do is ditch the pistol and shotgun powders. Something like 4895, RX7 or 4198 in about that order or any stick powders in that burn rate.

I've always heard 7 1/2 grains of Unique being a good load but it's only about 2,000 fps.

[ChuckS1]

You're right; it's 1-12, my bad... Yep time to try some other powders I think. I also have a 225438 mold, but that one didnt shoot any better.

[Wayne S]

If you had been shooting J bullets before at normal .223 speeds and didn't give the BBL a VERY VERY good cleaning you might try that.
I had the same problem with a 1-12 Hornet till I spent an afternoon giving the BBL a VERY VERY good cleaning.

[wistlepig1]

Chuck, I was having the kind of "groups" that you are having with my Hornet and 438 mold and fast powders. After a month of looking I found a can of H4198, and things started to look up. This might be an answer for you, or maybe not.

[NHlever]

I don't have the same mold, but I've been shooting the Lyman (new version) 225415 in my Remington 700SPS. Two loads it likes are: 9 grains of 2400 OAL 2.125, and surprisingly 6 grains of titegroup. The velocity of both is supposed to be around 2000 fps, but the Titegroup load prints over 2 1/2" higher at 100 yards. Five shot groups at 100 yards are running just over an inch so far... (1 1/16" -1 1/8")

[MtGun44]

Would these boolits work well in the REALLY fast twist AR barrels that are now std, like
7, 8 or 9 twist barrels?

Considering trying one in .223 in an AR but not sure the fast twist won't mess things up.

[StarMetal]

Would these boolits work well in the REALLY fast twist AR barrels that are now std, like
7, 8 or 9 twist barrels?

Considering trying one in .223 in an AR but not sure the fast twist won't mess things up.

Yes...but you just have to try them in your rifle. I have a 7 twist and I pushed cast as fast as I could just to try make it go bad and I can't. I can push them hard enough the accuracy won't be real good, BUT they don't disintegrate or fly off the whole target backing. They also do not lead (zero) my bore. I think that chrome lined bores are very forgiving not only to not leading with cast, but to not alloying up that much from jacketed. That has been my experience. Don't forget if you push cast to near 3000 fps in a 7 twist you're looking at 308571 rpm. That's not going to give you the "best" accuracy. If you keep them reasonable, say like 2000 to 23-2400 fps they work very well in all departments. That is at least out of my Colt HBAR with 7 twist.

As an aside my Colt HBAR shot respectable groups with the 22 conversion kit and using 22 Long Rifle ammo contrary to the belief you can't shoot 22 LR with any success from a 7 twist. I'm not talking shooting like my Remington 541-S bolt rifle shoots them but very usable.

[NHlever]

A guy shooting a carbine (11") variant of an AR-15 next to me at the range last time was really interested in how quiet my loads were, so I let him shoot the 6 grains / Titegroup load in the carbine. He got good 25 yard accuracy, and surprisingly they shot point of aim with his jacketed loads.... Those loads did not, however function the action.

[Calamity Jake]

You might try this one.

http://photos.gunloads.com/images/CalamityJake/rralar15cast003.jpg

Or this.

http://photos.gunloads.com/images/CalamityJake/rralar15cast002.jpg

Both are AA2015, 17 and 17.5 grains and 15 rounds

These loads cycled my AR

[Jack Stanley]

I have some of the RCBS bullet cast and ready to load in my 788 , I don't know what the twist is with that but I intend to start with about four grains Bullseye and see what it does . I'm hoping it will stabilize ok because I'd rather run them slow for short range shooting .

Jack

[Larry Gibson]

I have some of the RCBS bullet cast and ready to load in my 788 , I don't know what the twist is with that but I intend to start with about four grains Bullseye and see what it does . I'm hoping it will stabilize ok because I'd rather run them slow for short range shooting .

Jack

Your M788, if original, shoud be a 1-14" twist. Lucky you. Before Remington came outwith i in .223 I used to get the .222 and rechamber for .223 for several guys They alway shot extrmely well, even with cast bullets. I had a M788 .222 that I kept that way. I formed cases from .223 cases which gave me thick necks that outside turned very conentrically. That rifle shot Lyman's 225415 a moal with H4895 an a dacron filler into the 2300 fps range. It would hold 1.5 moa up through 2450 fps. I let a "friend" talk me out of it in a weak moment and I'm still regretting that.

Larry Gibson

[Jack Stanley]

Thanks Larry , that's good to hear . As far as I know it's still got the Remington barrel , I suppose I oughta check the twist anyway . I recently came across a two cavity 225415 so when I warm it up , I'll see what it can do . A really nice fella loaned me a bunch of molds and the 225462 was amonst them , it does really well with a light charge of Bullseye and gascheck .

The Bator isn't doing as well but I may have run the mold a little cold . I'm looking forward to the RCBS , I have the most of them cast from the loaner program :grin:

Jack