F-class guys are running nuclear loads in a 30” barrel bolt gun with brass only lasting a couple firings to get just a little over that..223 single feed
Do tell.
F-class guys are running nuclear loads in a 30” barrel bolt gun with brass only lasting a couple firings to get just a little over that..223 single feed
anyone reloading these for there stock RPR?
at 2.41" oal i'm .010" off the lands.
that leaves a lot of bullet into the case.
Ruger pr mag can accommodate up to about 2.60"
why would the oal effect bc?
at 2.41" oal I'm getting about 2450 fps.
22.5g of target, new Lapua , fed 205M primers.
Only loaded 3 at that charge.
I bought a pound of that 2000-mr this week and am scared to use it. Could you give any insight as to what you see for temp sensitivity? Have you tried to purposely cool and warm rounds shot over a chrony for results? Definately looks to be able to push the numbers up a node but if that comes with severe pressure and velocity swings I wonder what its value will be.Maybe try a different powder for more speed? I'm guessing you meant 22.5g of Varget above? I've moved to 2000MR with fantastic results. A ball powder will fit better in a small case. I'm using 27-28g in an 80g class bullet and 26.5-27 in a 85.5-90g bullet giving me up to 200 FPS more just by switching powder. Have shown no loss in accuracy. We all know ball is more temp sensitive so develop your loads now, while it's warm outside.
I have shot the 80 at 1,000. If the winds not too fast it's ok. Otherwise I don't have the skills to compete with the wind. I now only shoot too 600 with the .224. My ego won't take the punishment.
I bought a pound of that 2000-mr this week and am scared to use it. Could you give any insight as to what you see for temp sensitivity? Have you tried to purposely cool and warm rounds shot over a chrony for results? Definately looks to be able to push the numbers up a node but if that comes with severe pressure and velocity swings I wonder what its value will be.
I developed a load last summer shooting 82g bergers out of my 20" 223 ar-15 service rifle. Load is 27g of 2000MR in a basic Wylde chamber, not long throated, and that's shooting in 90-95 degree heat. Of course keep any ammo in the shade at all times but, when shooting XTC this winter at 55 degrees, I had to come up 3/4 minute, at 600 yds for the same zero but didn't loose any accuracy. XTC shooters love 2000MR and it delivers.
In my 30" Palma gun, running the same load 82g berger, I'm over 3000 FPS with no issues. Recently shot the new 85g Nosler RDF with 26.7g (after testing several combos) getting 2925 (same 30" barrel) out of a 500 BC bullet with exceptional accuracy in 90+ degree heat. My advice, develop the load in the heat, adjust your elevation in the winter.
I developed a load last summer shooting 82g bergers out of my 20" 223 ar-15 service rifle. Load is 27g of 2000MR in a basic Wylde chamber, not long throated, and that's shooting in 90-95 degree heat. Of course keep any ammo in the shade at all times but, when shooting XTC this winter at 55 degrees, I had to come up 3/4 minute, at 600 yds for the same zero but didn't loose any accuracy. XTC shooters love 2000MR and it delivers.
In my 30" Palma gun, running the same load 82g berger, I'm over 3000 FPS with no issues. Recently shot the new 85g Nosler RDF with 26.7g (after testing several combos) getting 2925 (same 30" barrel) out of a 500 BC bullet with exceptional accuracy in 90+ degree heat. My advice, develop the load in the heat, adjust your elevation in the winter.
Ned and Bose provided some great information, and I will try and add to that. Ive been shooting the 88ELDMs in my 223 Palma rifle with good results from 600 to 1000 yards. My go to powder has been H4895, with either CCI 450s or the Russian small rifle magnum primers and sorted LC brass. I had a reamer made up to shoot the heavies and the freebore is around .200. I can run the 88s at 2900 with no strain and have good case life and accuracy. Im a sling shooter, and the best score at 1000 so far has been 199-12X, with good elevation. The rifle is a Rem 700 with a 30 inch Brux barrel, in a tube gun stock. I picked up some 85.5s at Lodi last month for testing after seeing several people using them with excellent results during the matches there. All of my measurements are using the Sinclair nut for comparisons. My measurements of the bullets are as follows:
88 ELDM base to ogive- 1.645
85.5 Berger BTO-1.560
88 ELDM Bearing surface-.468
85.5 Bearing surface- .379
So the 85.5 is about .085 shorter in BTO and has about .089 less bearing surface that the 88.
In my rifle the 85.5 touches the lands at about 2.650. The closest 80 grain-ish bullet that has about the same BTO as the 85.5 is the 80.5 Berger Fullbore (great bullet by the way), which measures at about 1.580. To have about .150 of the 85.5 in the neck I will be jumping them about 50 thousandths, but the Hybrids dont seem to be jump sensitive. Im curious to see if they shoot as good as the 88s.
were your ar loads at mag length?
thank you!
I’m getting 2750 in a 26” tube .090fb with 26gr of PP2k 88s in wolf brass.
I can’t run then very long as I’m into the lands at about 2” even CBTO