80gr Nosler Custom Comp for 223Rem / Only Load data for 5.56x45

[D̷e̷v̷i̷l̷D̷o̷c̷A̷Z̷]

I was hoping for a little help. I bought some 80gr Nosler 223 projos in the hopes of using them to shoot longer ranges. I am now looking at Norma's site and they only list the load data for the 80's under the 5.56x45 option but not the 223 Rem. Before I make a HUGE mistake and possibly break something or injure myself I thought it best to ask for help first.

I wanted to use RamshotTAC powder and I see Ramshot list data on thier site for 80gr SMK projos....is it a good or bad idea to think that load data would be the same?

Does anyone know of published data for the 223 Rem and the 80gr Nosler Custom Comp?

 

[redneckbmxer24]

Companies generally lean to the cautious side on data for liability purposes, it's up to you but I would personally feel comfortable giving the 5.56 data a go knowing that they probably published it to be safe pressures for people running 223. If you're uncomfortable then just start .5gr-1gr lower, I don't think you'll have an issue with TAC though.

I'm confused by your post those as the title and part of the body say 80gr Nosler Custom Comp but the body also references 80r Norma, which bullet is it exactly?

Edit: I just looked at the Ramshot and Nosler data listed. Assuming you're talking about the 80gr Nosler I'd start at 21gr working up in .2gr increments max, I personally do .1gr in lower capacity stuff even for the initial ladder/presure test. I'd load up to 25gr for the test initially. You will probably see pressure before 25gr! This is just so you don't have to go back out to check again assuming you can't shoot them at your house or wherever you load. The Noslers like a little jump so I start them at .020 off.

I'd guess you'll probably see pressure in the 24-24.5gr window but that is just a guess and there's too many factors to definitively say. This is why you load up a little above where you think you'll see pressure, plus you will know where your pressure is, for those conditions. I shoot one charge at a time over a good chrono (I use Magnetospeed), carefully evaluate each case, and record the chrono data to determine where the nodes are.

 

[D̷e̷v̷i̷l̷D̷o̷c̷A̷Z̷]

Thanks. I typed it up wrong. Just Nosler.

 

[Wayne McNeely]

The Nosler 80 cc bullets are not a factory 223 offering. That's because .223 throats are not designed for bullets that long. Standard 223 chambers were throated for lighter bullets and the barrels, generally had slower twist. If you have a custom chamber with a fast twist barrel, then you should be alright, however, with a factory 223 chamber, your bullets will be seated very deep in the case which restricts your powder capacity.
All this to say, 556 data will give you slightly higher pressures provided your chamber will allow you to use that heavy/long a bullet.


Wayne

 

[dleeds]

I use Nosler CC 80's in one of my AR's . With 24.7 grains of Alliant 2000-MR, I can shoot 5 shots in a dime sized hole at 200 yds. I haven't done any "load development"on this combo -- this was just random chance. The velocity is around 2650, with an 18" barrel.

This combo shoots decent in another AR I own, but nothing like my 18" . If you can't get 2000-MR, go for some CFE223, or even LEverevolution.

 

[D̷e̷v̷i̷l̷D̷o̷c̷A̷Z̷]

I appreciate all the feedback!

 

[CavReconScout]

I use 23.8gr Re15 @ 2.46 OAL in my 223 match barrel with Lapua brass, and 24.1 Re15 at the same OAL with Rem commercial brass for 2800fps. My friend uses 24.4gr of Varget with the same numbers. Work up to these loads. Both are tack drivers, all are out of 26" bolt guns.


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[CavReconScout]

Forgot to mention the Nosler 80gr in my experience is fussier than the Sierra as far as seating depth. It will shoot great though when you find the node.


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