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Chrony results with factory ammo? Share some data?
I'll do the same when i finally get to that point. I have a 20" howa #1 in the works and a cz 527 and just ordered a 22" howa and another chassis for it too. In the meantime have any of you chronied your howa's and cz's and specifically with factory hornady ammo or other factory?
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I have a 20" and 22" lightweight Howa and I bought some American Gunner ammo last week. I'm planning on running them over the chrono tomorrow. I'll post my results. -
Have to get ready for work. My "Its a Horde" thread in the photo gallery has velocities for 3 Howas, shooting HAG and ELD.
IIRC the high end was 2476 and the low was 2430.Sticks
Catchy sig line here.
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I only had time this morning for two groups. Both rifles have less than 25 rounds through them and I started with scrubbed bores.
20" lightweight: 2433, 2419, 2398, 2411 Average of 2415 fps.
22" lightweight: 2428, 2424, 2464, 2469 Average of 2446 fps.
Hornady American Gunner Bulk Rifle Ammo w/ 123gr BTHP.Comment
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I started with some ladders I had worked up earlier in the year.
Howa 22" barrel, SAAMI chamber.
123gr SST
Federal brass 1x fired 1.208" headspace to shoulder datum
Rem 7 1/2 SRP
Hodgdon's LEVERevolution
COL: 2.250"
Temp: 60˚F on range thermometer
Chrony Beta Master 15ft from muzzle
29.8 2453
30.1 2465
30.4 2499
30.7 2517
31.0 2534
31.3 2596
31.6 2608
31.9 2605
32.2 2658 (This averages 51,551psi in a SAAMI chamber.)
129gr SST
Lapua brass 1.215" headspace to datum
Rem 7 1/2 SRP
LEVERevolution
COL: 2.310"
60˚F
Left string was shot first, then the right one
29.3 2370 2407
29.6 2393 2400
29.9 2448 2405
30.2 2453 2404
30.5 2504 2453
30.8 Error 2475
31.1 2485 2512
31.4 2530 2523
31.7 2534 2545
32.0 2572 2572
31.2gr CFE / 123gr AMAX load
2599
2557
2582
2617
2617
2564
2586
2608
2619
2566
AVG: 2592fps. (AVG chamber pressure with this load is 46,235psi. in a SAAMI chamber.)
Hornady American Gunner 123gr BTHP
2469
2456
2465
2463
2437
AVG: 2458fps
Everything fed fine from the mag even the 129gr SSTs at 2.310" COL. I think I would choose the 129gr SST load for hunting, didn't notice too much difference in recoil. Fun little rifle to shoot.
All my primers have nice little dimples in them. I didn't see anything crazy going on with the brass, not that I rely on brass as a sign of excessive pressure, but I definitely still look at it. Even the Federal brass looks good.NRA Basic, Pistol, Rifle, Shotgun, RSO
CCW, CQM, DM, Long Range Rifle Instructor
6.5 Grendel Reloading Handbooks & chamber brushes can be found here:
www.AR15buildbox.comComment
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Howa 20" HB
Magnetospeed
Factory Hornady Black 123gr ELD-M
2504
2478
2495
2522
2490
2509
2516
2506
2506
2497
AVG: 2502 fpsComment
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Thanks, exactly what i'm looking for. I have lots of eld-m. I'll run it through 22, 20" howa's and the cz american also. Just having a helluva time finding the time. The 22" howa should land any day. Will get them all to about 40 rounds on barrel and then chrony them. I understand peak or stabilized velocity will be around 100 rounds?Comment
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And this might finally be the cartridge that gets me into reloading, that's saying something as i've been adamant about not reloading for a long time as i'm into so many other things but i don't think i've also never liked a cartridge as much as i do this one!
I sure like the looks of 2600 fps. I wonder what a cz (or 24" rebarrel) would do with reloads on the 123 gr Tempted to see what a 24" benchmark barrel might do.Last edited by Stinky Coyote; 05-25-2018, 10:12 PM.Comment
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My 20" heavy Howa did high 2300's with factory 123 AMax at 30 degrees when it was brand new, and low 2400's with the same lot of ammo in 50-60 degree temps after a hundred rounds or so.
With 29 grains of AR Comp, those same 123 AMax's run just over 2600 fps, shoot sub MOA, and haven't shown me any excess pressure signs with several reloads on the brass. The 123 Scenar takes a hair less powder to make the same velocity, which leads me to believe that it's probably an even lower pressure option. The 123 Scenar also seems like it's gonna want to group, has about the best BC for its weight at Grendel velocities of any bullet Litz has in his book, and made it through 4 gallon milk jugs filled with water at 25 paces and 2600+ fps MV.
Also, I ran those 123 Amax's up to 2672 and didn't get the sticky bolt lift that I have the couple times I've ventured too high with this rifle. I'm not saying anything is safe in anyone else's rifle, but I think 2600 with a 123 is pretty safe in mine.Comment
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Yesterday, 5800 ASL, 75* ammo temp, 70s ambient, sunny and humid
Hornady ELD Black 123gr. Sitting in my closet since Xmas.
Howa HB - Fiona (Girlfriends rifle)
Labradar results
Was doing a turret tracking test - FAILAverage 2500.53 Highest 2523.06 Lowest 2478.79 Spread 44.27 Std. Dev
9.99 Shot ID V0 1 2499 2 2479 3 2499 4 2496 5 2494 6 2509 7 2493 8 2513 9 2523 10 2511 11 2507 12 2508 13 2502 14 2502 15 2498 16 2501 17 2485 18 2490 19 2498 20 2502
First 5 were sighters at .579 MOA to confirm zero.
Did a second run in the afternoon and got a .438 MOA. Howas love ELD.Sticks
Catchy sig line here.
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ooh i like this forum, now that's some data! thanks man!Originally posted by Sticks View PostComment
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Howa 20" barrel
1500ft elevation
80 degrees ambient Temp
Hornady American Gunner 2490 fps avg
Hornady Amax Factory ammo 2500 fps avg
Its gets boring picking off rocks at 400 yards with this cartridge and ammo. Dialed in 7 moa of elevation at about 400 yards.Comment
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