I was only looking to see where pressure would start with each powder. N570 target with the 5 diff charges attached. RL 33 was about the same.
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I was using hybrids using just about the same, but the smk's were just as precise and cheaper to buy. Both great bullets.
Anybody get the new Hornady book? Actually has 300 Norma load data. Even has LRT data. Lyman has a Long Range Reloading book with 300 Norma data. That’s surprising considering Hornady has said a few times that they had no intention of publishing 300 Norma.
I'd be surprised if they put any data out for the Norma while they are still pimping their PRC round.
Maybe they are trying to make up the lost sales revenue with reloading books since the Lapua PRC cases came out.
I'd just purchase the QL software and work up.
Are any of the 4 new Lapua cases even in the wild yet? I’ve been waiting for the 300 win mag for years, what’s a few months more?
Not sure about the other 3, but the 300 PRC has been shipping for the last two weeks.
300 PRC update
The necks were EXTREMELY tight. I mandreled with a carbide mandrel and they were tough to deal with. When I seated the bullets....they were 120in/lbs to shove the bullet in....when normally I strive for 20in/lbs. Basically...I thought I was going to break my arbor press pushing them in...
www.snipershide.com
Thanks for posting that I'll pick up the book.
I'm definitely over their data. Just hit 85 rds on the barrel and still playing with loads. Was at 87 grs of N570 with the 250 gr no pressure signs and was averaging 2953 fps. Cleaned the barrel and it sped up to an average of 3015 fps still no pressure but groups opened up so I'm backing down and re-testing.
From Hornady -
Rob, This data was definitely all done in a pressure barrel and shot. However we did use the SAAMI spec. standards and not the CIP spec’s. The (MAP) per SAAMI on this cartridge is 61,000 psi. Thanks.
The CIP (MAP) is 63,817 psi.
Settled on a load for now.
Bartlein 1-8.4 26.5"
250 Hornady A-Tip
86.5 grs N570
2986 Avg fps
Virgin Lapua Brass
100 Yard Zero
200 Yard 3 shot group
300 Yard 3 Shot Group
Bartlein 1-8.4 26.5"
250 Hornady A-Tip
86.5 grs N570
2986 Avg fps
Virgin Lapua Brass
100 Yard Zero
200 Yard 3 shot group
300 Yard 3 Shot Group
You are going to like that load.
I got out to distance at Black Bear today.
Win Tac/AI 26" 1/8 barrel
250 ATIP
87.5 N570
3010 FPS
Good. The wind was light 4-5 and it was coming at you from 11 so you didn't have to deal with that swirl and push coming off of Spears Mountain in Berm 4. It was a good day to shoot up there.
They seem to work okay with the N570. My overall SD was 10.07 for the 35 shots, but you can see that the SD for the 5 shot strings was between 5 and 15. Looking to smooth that out a hit. The error was always on the high side. I'm guessing tight neck tension. Those cases had been fired 3X without annealing. I annealed cases tonight and will try again next weekend.
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Ultimatum Deadline- 28" barrel, 1-9
225gr ELDM
Bertram case
CCI250
H1000 84.0gr
Jump 0.010"
2985FPS
SD7
85gr got me to 3035 but getting some ejector swipe and left it alone.
225gr ELDM
Bertram case
CCI250
H1000 84.0gr
Jump 0.010"
2985FPS
SD7
85gr got me to 3035 but getting some ejector swipe and left it alone.
Guys had something weird happen to me today. Loaded up my usual 84.6 of Retumbo 225ELD Lapua brass which is my regular load. It was a fresh pound of powder same lot. First 2 rounds blew the primers out and hard bolt lift. I decided to pull all the bullets and recheck...yep 84.6gr that I load on my v3 auto thrower.
Carbon ring causing pressure? Will try knocking it back to 81.0 and see what happens. Never had problems with Hodgdon powders before. I'm stumped.
Carbon ring causing pressure? Will try knocking it back to 81.0 and see what happens. Never had problems with Hodgdon powders before. I'm stumped.
I would hate using 1lb containers of powder, you just never know what you will get in consistency but I get it if that's all you could get your hands on. Saying that, I would probably be checking velocity when working with a new container even if it is the same lot.
Also, if you don't have a borescope pick one up, there are some good ones out there very reasonably priced.
I would say very good chance. If you read back on this thread it happened to me. Upon my 100th or 150th round all of a sudden had the firing pin punching a hole in the primer. I shot a couple factory match rounds and the same thing. Did all sorts of things trying to find the problem, I think it was a carbon ring. Never saw it but took someone’s word for it and really worked at cleaning the chamber and the problem went away.
Not sure how frequently you are cleaning the bore. I use N570 and I clean the powder fouling out of the bore every 50-60 shots. The fouling is generally pretty substantial after 50-60 shots.
Yes so I decided to borescope my rifle as I have one. Nothing really stood out. Still worked some JB bore paste on the throat and rechecked pretty much the same.
Will load a few more at 81.0 throw my magneto speed on it and if I'm having problems will dump the bottle. I've shot thousands of rounds of H4350 in my 260 with various lots using the same powder charge and never had an issue. Same goes for my 308 with Varget. This is really bizzare.
Will load a few more at 81.0 throw my magneto speed on it and if I'm having problems will dump the bottle. I've shot thousands of rounds of H4350 in my 260 with various lots using the same powder charge and never had an issue. Same goes for my 308 with Varget. This is really bizzare.
So loaded 2 rounds at 81.0 went out to the range quick. Heavy bolt lift and ejector marks. Came home dumped the pound and grabbed another pound of Retumbo different lot. Loaded 84.6 again 2 rounds to see what the f....ck was going on. I have had zero issues with this load.
Back out the the range shot the 2 rounds. 100 yard zero was back and ejected without issue. Not sure what to say but everything is back to normal.
Back out the the range shot the 2 rounds. 100 yard zero was back and ejected without issue. Not sure what to say but everything is back to normal.
Really liking the load development on the Berger 245 EOL and N570. Very easy to tune so far. The 87.1 gr load is right at 3000 fps.
85.1gn N570 with the 245 EOL shot just over an inch group for me at 300yds. 35 rounds down the pipe as of a few days ago… Got it up over 3k without any signs of pressure but didn’t see what I’d like there…
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Hi guys,
This is a 3-shot group at 300 meters with Berger 230 Hybrid target, N570 (84 grain), Norma brass, and Federal 215 LRM. SD was 1,4 and ES 2. Average velocity 915 m/s. I guess this was just below 1" group and no pressure signs. I wonder if I should keep this set up or if 245 EOL could be more suitable for ELR competitions? I'm new to long range shooting as well as quite new in load development so all comments are welcome.
This is a 3-shot group at 300 meters with Berger 230 Hybrid target, N570 (84 grain), Norma brass, and Federal 215 LRM. SD was 1,4 and ES 2. Average velocity 915 m/s. I guess this was just below 1" group and no pressure signs. I wonder if I should keep this set up or if 245 EOL could be more suitable for ELR competitions? I'm new to long range shooting as well as quite new in load development so all comments are welcome.
This looks great - time to shoot it further and see how it performs. I wouldn't change anything at this point.
Ok, thanks. I’ve had first shots hit on plates out to 1430m and hit plates out to 1650 m but missed targets beyond that, mostly due to wind but also due to lack of speed I guess. Need something that can hit plates as far as 2100m prior to next competition. I wonder if 245 gr Berger would be more or less suitable elevation vice due to extra weight? Or if A-tip is a better option?
Looks like good ES and SD's and if it groups like that consistently than stick with that load. However, if that group is all your basing it on then you need to test it more.
Just because something looks better on paper doesn't necessarily mean it will translate to your specific rifle. I'm guilty of subscribing to the numbers game because, theoretically it should give me the best performance and I got really lucky with the 250 A-tip and 245 Berger in my rifle but I set it up specifically to shoot the heavy for caliber loads from the start, and, a better shooter with an "inferior" load could kick my ass all day long.
Got a Foster FL sizer die non-busing die. Does anyone know how much it sizes the neck down (with the expander ball removed) on Peterson brass compared to a seated bullet? I might run the Foster instead of a bushing die. I don’t have any brass yet.
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