7-300 Norma Mag Improved

Did some more N570 testing this morning.

91gr.
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Shot it at 600 yards. I haven't zeroed with this combo or anything, and didn't hold for wind. Just wanting to see how it shoots.
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But now here's the caveat.

This is the throat area after 101 rounds of H1000
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And this is the throat now, after just 22 rounds of N570
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So N570 is pretty brutal.

May still load of 50 of them with N570 for
Hunting season since I have a new barrel
for next year already. Or just stick to H1000
 
How many shot strings of n570?
That was 2 foulers. And four 5 shot strings,
the 5 shots were each shot over the course of 8 minutes, not back to back to back. With full cooling in between.

Have you tried 568?
Seems like it might be a compromise of the 2, and you definitely have the capacity.
I haven't tried 568, just simply because H1000 shoots so good. So I'm going to give up speed, might as well just stick with H1000. I'm sure 568 would be a great option in this cartridge though! But I'm not sure how easy it is on the throats compared to 570.

I know 560 burns hotter than the sun and is super hard on throats also.
 
Looks the same to me! 😂 😜

Is the 570 even harder being a .284 or would it be the same with a .308 caliber bullet?
 
Looks the same to me! 😂 😜

Is the 570 even harder being a .284 or would it be the same with a .308 caliber bullet?
570 is harder because it's so overbore. A 300 norma with N570 doesn't have near the throat damage as this 7-300 with the same amount of firings. But maybe a 7PRC with N570 would last longer than a 300 Norma with N570. If that makes sense lol
 
570 is harder because it's so overbore. A 300 norma with N570 doesn't have near the throat damage as this 7-300 with the same amount of firings. But maybe a 7PRC with N570 would last longer than a 300 Norma with N570. If that makes sense lol
N570 burns a barrel about 40% faster than H1000 in a .338 Edge but gives ~150 fps more speed.

Nice shooting ! Do those aoudad taste any good ?
 
N570 burns a barrel about 40% faster than H1000 in a .338 Edge but gives ~150 fps more speed.

Nice shooting ! Do those aoudad taste any good ?
Yeah, it doesn't matter what shot spacing, shot string length, time between shot strings ect. It is WAY more erosive than H1000.

I killed an aoudad a few years ago and it wasn't great.

But the ones from this trip were actually pretty good! Just ate the backstraps, but they were excellent.
 
I got three 26" Proof carbon blanks, a Fuzion TI action, and AG composite stock for mine. I'm going to get all three barrels cut at the same time, because I plan on running this thing hard on N570 pushing 195 Bergers.
That's really the way to do it IMO. It's a badass cartridge, and if you want to commit to it, just get a few barrels cut. I'm still toying with barrel contours and lengths, or I would 100% do the same thing.

Testing out a 24" Rem Varmint contour next. But I think I'm going to stick with 24" since I still get plenty of speed. Shorten up the package for a little easy pack ability.
 
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