Didn’t have but a little while today to play with some loads. Longest I could load them and still get in my DMB was 3.670, which was .060 jump. I was hoping to get up to around 77 grains of H1000 but was starting to flatten primers at 76. So I settled on 75 and shot it at 400 yards which produced just over a 2 inch group that was abt 3/4 to an inch high. Rilfe is a remington 700 Alaskan with a 26 inch barrel. It’s never been super accurate(1/2 to 3/4 MOA) so I was pleased with that load. I didn’t chrono them but based on the elevation I had dialed, it was right around 2900 FPS. Does this sound like I am in the right ballpark? Brass was new SIG brass and federal magnum primers.
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300WM loads using H1000 and 215 Berger Hybrids
- Thread starter tlsmith22
- Start date
I am shooting 77.5 h1000, cci250 primers behind 215 Bergers in Norma cases in a Remington Stainless m700 Long Range. Half MOA or better to 1000 yards. Slight flattening but no ejector mark. So far I am on the fifth loading on the same brass. I only get 2850 in mine even at 77.5. Hammered an antelope at 700 yards with it this year.
Have you pushed any harder than 76grains? I tested all the way to 79 grains, ejector marks and slight stiff bolt. Every barrel is different, especially factory.
Have you pushed any harder than 76grains? I tested all the way to 79 grains, ejector marks and slight stiff bolt. Every barrel is different, especially factory.
I only went to 76. I had a slightly stiff bolt there and flat primers. I don’t know the velocity but i was basing that off the drop at 400 yards and the zero
Honestly felt like it may have been more than 2900 but idk. Like Silverjay, I cant get closer than .060 and still use my DBM. I Would have been a little nervous going above 76 grains with flat primers and a stiff bolt.
Honestly felt like it may have been more than 2900 but idk. Like Silverjay, I cant get closer than .060 and still use my DBM. I Would have been a little nervous going above 76 grains with flat primers and a stiff bolt.
Was u seeing any pressure signs at 76? I would love to test some loads for accuracy above 75, but I am cautious to try it. My barrel is 26 also. I could try some different brass and see if that helps the pressure. This is the first time I have used Sig brass.
I am at mag length on a BDL, 3.68”. I am jumping .040. If your accuracy is good at 75 and you are at least at 2850, it will be a hammer. You have to remember high BC bullets carry velocity at longer distances.
I don’t trust my drop measurements until I get past 800 and shoot at least two distances on the same day to compare.
Good luck!
I don’t trust my drop measurements until I get past 800 and shoot at least two distances on the same day to compare.
Good luck!
I didn't see pressure until 77.5 grains, didn't chronograph those as accuracy degraded the harder I pushed it .
My hunting load is 75.5 gr of H1000 with the 200AB in Nosler brass with Fed215M.
From my 24" barrel the velocities are 2860fps average but the 200AB has a long bearing surface.
I'm on my 2nd loading with those neck sizing only with a Lee collet die and no heavy bolt lift at all.
From my 24" barrel the velocities are 2860fps average but the 200AB has a long bearing surface.
I'm on my 2nd loading with those neck sizing only with a Lee collet die and no heavy bolt lift at all.
I've run the 215 thru a 300rum with jump of .090 and thru a 300wm with more jump than that (mag limited OAL) both were tack drivers with that much jump. Hybrids are very forgiving on long jump.
It’s a 1/10 twist. It’s a custom remington 700 built by northwest action works and the chambers cut with a PTG reamer
