Starline .223 vs 5.56

[searcher]

+1 with Ned Ludd, that is a spicey load.
If I gave any advice to anyone loading near the top, it would be to double check any time you have a lot change of anything, bullets, brass, primers, or powder.

And be mindful of the shooting temperature...

 

[searcher]

Had you been shooting that load at lower air temperatures previous to the problem? I used a stiff load of Reloader 7 in one of my varmint rifles for years - but only shot it in cold weather. Then one day shot it when the temp was 85. Blew a few primers before setting it aside and lowering my charge a few grains. I thought I had worked up to show pressure before backing off when I settled on the original load. Apparently, I didn't do a good job of it.

 

[kyotekiller25]

I'm using the starline 556 brass for a new bolt action long range trainer in a 223 wylde. I bought 200 of them. They are heavier than Lapuas by 3.5g

I'm shooting the 75g ELDMs at 3000 with 24.5g of H4895 from them.

I bought them because I couldn't find any Lapua at first. Was told the case head/web area was thicker and harder, therefor would hold up to high pressure loads better. Well see how they hold up since I'm running them pretty hard in a 28" 223 Wylde. I'd guess around 60K PSI

 

[RegionRat]

They are not the equal of Lapua, but you will be fine with most applications. If you plan on training past 600 yards, you may want to weight sort them a little for variation and keep your sets below 3 grains.

BTW, it helps to keep the units as gr for grains. We all know what you mean, but the rookies can get lost.
g = grams
gr = grains
1g = 1 gram = 15.432 grain
3.5g = 54.013 gr

 

[kyotekiller25]

They are not the equal of Lapua, but you will be fine with most applications. If you plan on training past 600 yards, you may want to weight sort them a little for variation and keep your sets below 3 grains.

BTW, it helps to keep the units as gr for grains. We all know what you mean, but the rookies can get lost.
g = grams
gr = grains
1g = 1 gram = 15.432 grain
3.5g = 54.013 gr

Will do! Oh ya, this is definitely gonna be used past 600 yards. Mainly out to 1K, but I will see how it does out to 1200 and 1400 also.

I did end up locating some lapua from a private party on predator masters. The starline is actually a lot more consistent weight wise. Which surprised me. It's holding .5 grain while lapua had a 1 grain spread. That doesn't tell the internal capacity, but I thought it was quite surprising still since Lapua claims to be the best brass available...And Starline is almost 1/3 the cost.