I couldn’t get enough H50 in the case to get to my desired velocity with 245’s. Was up to 96 grains and she was getting pretty full. Found some N570 and it shoots great.
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Lapua 300 Norma Mag Brass Box of 100
Lapua World-class brass begins with high-quality raw materials and superior smelting and metallurgical competence. Throughout the production process,...www.midwayusa.com
Midway has good prices on lapua 300 Norma brass. I'm posting it here so I won't be tempted much longer haha.
On another note, manson reamer at .2148" freebore should work just fine with the Berger 245gr LRTH. Both brass and bullets seem to be popping up lately.
Here's about what they'll be seated at to get .040" off the lands +/-. I think the .215" reamer is about perfect. Just good to get a visual idea. IMO not worth ordering a custom reamer. View attachment 8223359
There is a thread on accurateshooter.com by Alex WheelerI've been threw here but is there 300 norma improved load data on this one? I didn't see any threads for improved reloading data
I need to get off my FA and load up for my barrel. Probably start with EOL.245/N570 or Hyb.215/H1K. I‘m just scared I’ll like it too much and might need to buy a backup barrel for it asap….AXSR 300 norma
8 twist factory barrel
Edit: these speeds are on a new barrel- 100 rounds fired.
New lapua brass
Federal 215 primers
Velocity gathered with magnetospeed
Outside temp 87-90f
The lower charge weights did not group well, some as big as 1.3 moa. Once I started to increase charge weights the average group size was .6-.7 moa at 100yds.
220 LRHT
85gr H1000
3053fps
.478 moa @ 100yds
same rifle
220 LRHT
N570
3147fps
.631 moa @ 100yds
Still adjusting powder charge and seating depth.
What are other owners of AXSR w/ factory barrels seeing for accuracy and speeds?
What barrel length are you running?245 LRHT
Lapua Brass
CCI 250
87.5 gr N570
0.020 off lands
3060 avg fps
No pressure issues, was faster than I expected. Best ES was 12 and SD 6.3 with a 5 shot group. .38 moa.
I also have very extensive access to all these and I currently shoot N565 because I achieve the velocities I want for hunting and according to some applied ballistics testing N570 burned out barrels much faster than N565. That being said, when I shoot the NF ELR next year I'll use N570 because I want ever fps I can get.I've got a line on a bunch of N570, any reason to choose N565 or N568 instead?
In some of the above posts its said that there is a "tiny" loss in FPS moving to N568. If it's like 25-50fps with easier metering, cooler burning and long barrel life, then I'm not sure why everyone isn't talking about it.
I'm planning on grabbing 16lbs so I'm just putting feelers out incase I'm missing something. Will probably end up with N570.
with easier metering, cooler burning and long barrel life, then I'm not sure why everyone isn't talking about it.
Easier metering yes, but not cooler burning from what I can tell. If you want to save the throat from too much heat, try N165 or N170.
Just to add: N565, N568 & N570 are almost perfect powders for .300NM. N565 is really good for bullets in the 190-230gr range, and N568 & N570 are good for 200-250, easy.
Exactly what I was hoping to hear. Thanks.I've had 26", 28", 30" & 34" and it feels like 30" is the sweet spot if you want to shoot far. 1:8 twist works for the vast majority of bullets, with the only exception being 1:7 for heavy solids.
What kinds of velocities were you finding with a 30" and with what grain bullets?I've had 26", 28", 30" & 34" and it feels like 30" is the sweet spot if you want to shoot far. 1:8 twist works for the vast majority of bullets, with the only exception being 1:7 for heavy solids.
Awesome. Thanks. Looking to get 3200 with a 215 grain berger250s at 3000 fps
220s at 3150 fps
212 solid at 3200 fps
To fire form I just dumped in 25 grains of Greendot in the case and sealed it by sticking the neck into a bar of soap. Worked like a charm and smelled oh so fresh. LOLJust got my 300 norma improved back. Was going to start and load some fireforming loads. Has anyone messed with ramshot lrt 225 eldm?
I also have other powders but figured start with the cheap stuff first and cheaper bullets to get me started.
When I was little my grandpa blew up a rifle firedorming making a mistake so I just shoot full charges to be safe. I know a lot of people have good luck but that was enough for me lolTo fire form I just dumped in 25 grains of Greendot in the case and sealed it by sticking the neck into a bar of soap. Worked like a charm and smelled oh so fresh. LOL
Thank you. My plan was to start around 90 to 92.View attachment 8268090
Low 90s should do the trick.
Loose primer pockets?Hi everybody, wanted to drop a quick question. How many firings is everybody getting on their Lupua brass?
I’m running lupua brass, F215GM primers, N570 and 225 eldm’s that run at around 3100 fps or just under. So not pushing too hard, but they’re not baby loads either.
I load a 0.002” headspace, trim to 2.486”, and shoot 0.015” off the lands.
I’ve now thrown away about 12 or so bullets after 11 firings. Does this sound normal?
Lo
Loose primer pockets?
Then why did you throw them away after 11 firings?Nope, primer pockets are all good
Ah shucks. I should edit the post I made earlier.Then why did you throw them away after 11 firings?
It’s a normal 300 NM, using a 0.002” headspace (shoulder bump) - I’m meticulous about this, so every case is measured.I guess you know the next question. What's your shoulder bump look like? Is this standard or improved? If improved, how did you fire form?