Embarking on yet another new chapter of handloading!

[The_Shadow]

Embarking on yet another new chapter of handloading!  I'm studying and about to start reloading 223/556 soon as the dies arrive.  Have some brass I'm preparing but waiting on a new cutter for the cutting of the crimped primer for easier primer insertions.

Looking at some heavier 70 - 78 grain projectiles, but want to match the Black Hills 77 grain MK262 loadings...
So the fun is starting and the testing as well to see how it shakes out! 

[sqlbullet]

You and me both.

I had a bunch of back stock of 55 grain projectiles.  Those have been loaded up now and as soon as I can get some time on the unloading machine, I will be ready to work up a load for my "SPR" build.  I hope I can find a recipe that will shoot well with WC846 powder as I have about 20 lbs of it on hand.

[The_Shadow]

Hey Mitch look at this info:  http://www.223reloads.com/home/223-5-56-info/223-5-56-reloading/wc-846-loads
This might help you come to a loading consensus...

[PointBlank82]

Try Alliant Power Pro 2000-MR... this stuff flows like water and produces epic velocity with heavy .223 and .308. I pushed a 150 gr FMJ out of a 16" barrel to 2700 fps... can move 175 gr out of a carbine to 2500 fps..

[sqlbullet]

Thanks!  That is a good read.

Kinda makes me wish I had purchased a couple of jugs of the 844 when I bought my 846.  I got them for $48/8lbs back in the day.

[The_Shadow]

Glad you like that article, I also learned a few things.   I like when they show the equivalent of various powders...possibly renamed batches of same overruns or changed contractual productions.

Thanks PointBlank82, I have some data for the Alliant products that I am studying as well.  Power Pro 2000MR is certainly a  good candidate and seems similar to CFE223 and a few others.  I only wish Alliant would post the test barrel lengths twist ratios and pressure values for their published & tested loads. 

[TSP45ACP]

Looking at some heavier 70 - 78 grain projectiles, but want to match the Black Hills 77 grain MK262 loadings...
So the fun is starting and the testing as well to see how it shakes out! 

What is your bbl twist rate?  Heavy bullets like 1/7, but most come with a 1/9 rate.

[The_Shadow]

At the moment the one I'm loading for is a 1:7" twist rate...

[sqlbullet]

My SPR has a Rainier Arms Ultramatch 18" barrel with a 1:8 twist and a rifle length gas system.  I picked 1:8 as a compromise to still be able to shoot lighter bullets if wanted.  I don't see ever going over 77 grain bullets as the 80+ grain pills use of too much case capacity unless you single load them.

[yfdcap]

Just started 223 last year along with 308.  Have been using H335 and BL-C (2) for both mostly because its available.  Other than 444, I have only reloaded handgun for close to 30 years. Rifle is more work but just as fun and rewarding for me.  I look forward to your feedback.   

[The_Shadow]

I've got a 100 loaded to set the optics and scope when I get some range time but man it is sweltering here in Louisiana.  Temps in the 90's and heat indexes at 100 - 108 today between rain storms...

Loaded with Hornady 75 grain BTHP over 24.6 grains of CFE223, some with CCI and Some with Winchester primers.



Got a few more to load up...

[The_Shadow]

My most recent ventures was a thousand 223/5.56 brass with crimped primers. What I found while cutting, cleaning primer pockets was the primer staking process does make the pockets out of round down the inside on some.  With some being pretty deeply distorted...

I bought a RCBS small pocket cutter and using it handheld, I could feel the high spots, as I was cutting and uniforming them. Glad that those are done now!

Now to find some cooler weather, to go test what I have loaded and adjust the optics...