H1000 - Where does it fit?

[jackstrawIII]

I've tried loaded H1000 in the following calibers, and it's given me horrible groups in all of them:

- 260 Rem
- 270 Win
- 6.5x55 Swede
- 270 WSM

I think that's it.

What cartridges do you guys use H1000 and find success? I have a bunch of it on the shelf and would love to find it's sweet spot somewhere.

[Stats Shooter]

I use H-1000 in my F-Class .300 win mag AND my winchester model 70 super grade hunting .300 win mag.

It is THE ideal powder for the .300 win mag for bullets ranging from 180-225 grains. It has the lowest extreme spreads, it is extremely temp stable and it fills the case well.

One thing about it though, It seems like H-1000 likes to have bullets seated long? I have no idea why this seems to be the case. Coincidence?..probably. But every time I have done a load workup with H1000, I didn't get down below MOA until I pushed the bullets closer to the lands.

I know that powder probably shouldn't affect seating depth the way that a bullet likes a certain jump. It is true that seating depth changes pressure for a given charge, but I have always thought that the only thing seating depth changed was how much powder you could fit into the case, and you adjusted the charge....well, with H-1000 it seems to perform better with bullets seated out beyond SAAMI spec.

The other thing with H-1000 is that it performs best with a compressed load, which means using longer heavy bullets. AND a Magnum primer. either Federal 215 or CCI -250. I don't care if it is a .270, use a magnum primer. I use H-1000 in .270 seated long and a compressed load and shoot bugholes with a 130 gr accubond.

But if there is 1 cartridge that H-1000 seems to have been meant for, it is the .300WM.

I have lots of info on this powder, just ask via PM if you want to know more.

[T. O'Heir]

Hodgdon shows H1000 as a powder for all those cartridges(takes a shovel full for the WSM), but there's more to accuracy that just the powder. What bullet weights are you using?
It's really a powder for magnums and large case capacity cartridges. Being a slow burner.
However, it's not at all unusual to need to try more than one powder when working up a load. Suggest you work with one rifle and cartridge at a time rather than trying to get one powder to do everything.

[jackstrawIII]

T. O'Hier,

That's one of the reasons I chose to purchase H1000 when I was getting started in reloading, it looked so versatile from what I read.

I've found good solutions for the bullets I want to use in most of those cartridges (Varget for 260, RL17 for 6.5 Swede, etc), but was more just curious to find where H1000's sweet spot is.

I was very interested to hear Missisippi's input regarding seating depth with H1000. I recently shot a string of test loads using 150 grain Ballistic Tips in my 270 WSM and the best group was about 2". Not good enough at all, but maybe I'll give it another try after adjusting the depth a bit. But for now, I'm going to try the RL 17 in that one too.

Anyways, just wondering where H1000 excels in the experience of the other members here.

[HiBC]

It has given good results for me in 7mm Rem Mag with 162 gr Hornady SST's and 168 gr MK's. Barrel is 26 in,primers Fed 215's.

The other powders tested were RE-22 and H-4821 SC that day.

H-1000 gave best groups. Nothing amazing, maybe 5/8 to 3/4 MOA

But I was doing the shooting! Some of that is me.

And,it was a Win M-70 Classic Laredo. I think I paid $600 new closeout special.

Kind of like a Win version of the Sendero . Its a production commercial barrel.

Its not world class,its not a bragging gun. But its darn sure good enough to outshoot me,and get business done.
H-1000 was among the best,if not the best,through the chrono.
For your cartridge group,I might experiment with RE-19 and IMR4350 (OK<H-4350 too,maybe) Imight load some H4831 SC but I suspect 4350 would be better..

H-4831 is slower than 4350 and H-1000 is slower yet.Unless you are pushing very heavy bullets...I'd lean toward a little quicker powder in your cartridges.

[Stats Shooter]

I was very interested to hear Missisippi's input regarding seating depth with H1000. I recently shot a string of test loads using 150 grain Ballistic Tips in my 270 WSM and the best group was about 2". Not good enough at all, but maybe I'll give it another try after adjusting the depth a bit. But for now, I'm going to try the RL 17 in that one too.

Anyways, just wondering where H1000 excels in the experience of the other members here.

Try this:

First check the chamber if you have not already to see what the max base to ogive is for the bullet you intend to shoot (Or OAL if you do not have base-ogive measurement tools but then take an average)

Then, if you plan to feed from a magazine, check and see what the maximum magazine length is. If the mag length is shorter, then seat giving yourself enough room to feed reliabily, yet as long as possible.

If you are single loading, then all you need is the max length to the lands.

Try the max magazine length first and adjust your load upward in charge weight in typical step fashion. I suspect you will find an accurate load.

If you are not restricted by the mag, I usually start about 0.030" off the lands and work in from there in 0.005" increments.


The bottom line is, H1000 is an outstanding powder for heavy bullets in the cartridges it is meant for. I won't go out and say it is THE BEST all around, but I have yet to find someone who didn't get at least decent results with it.

[HiBC]

Mississippi,I'm sure I could find some accuracy in seating length.I load to max mag box length.Not really interested in single loading.
I forget which bullet,might have been an A-Max,but I was about .160 off the lands at mag box length. Lot of jump.

I have considered "stroking" my M-70. The same action handles a .375 H+H.

Then I could load longer. Thing is,This is the USRAC Classic variant of the M-70. I'm not sure of being able to buy exactly the right parts.I have not actually experienced making this change so I'd have to learn something. That often goes OK but sometimes it requires new parts

Right now its pure unmodified original and it works.I'm not convinced I want to "fix" it.

[OzeanJaeger]

X2 everything Mississippi said. One of the best, full-house, powders for Magnum calibers around. Seems like the perfect burn speed and case capacity for .300WM. Like it was made specifically for it. I think too slow for most of the calibers listed in the op.

[flashhole]

I got terrible results with H-1000 in 7mm RM, 25-06 and 300 WM. Retumbo was much better with heavy for caliber bullets.

[RC20]

HiBC:

What mfg rifles?

Some are coming with LONG throats, those you may very well have to seat long to get any accuracy out of.

If they are long, and you want mag length, then you have to live with less stellar groups.

[Stats Shooter]

I got terrible results with H-1000 in 7mm RM, 25-06 and 300 WM. Retumbo was much better with heavy for caliber bullets.

I find this strange.

I have 3 different .300 win mags. A custom F-CLASS rifle, a Savage 110F, and a model 70 Super Grade. I have worked up several loads, different bullets, different brass, different rifles.....and H-1000 delivers in all bullets over 180 gr.

In my model 70 I'm loading 79.5 gr and a 200 gr Accubond. About 2925 fps

[IMG][/IMG]

I was able to shoot 4 such groups, none over 1/2 MOA

[Dufus]

The most accurate rifle I have is loaded to 0.204' off the lands. 3/16" to 3/8" 10 shot groups depending on the weather.

I have also found Retumbo to be very accurate. I have limited experience with H1000.

[cdoc42]

Flashhole, I've had just the opposite experience!

I have a Browning A-Bolt in 7mm Rem Mag w/BOSS set at 7.5; H1000 68.5gr with Fed215M and Hornady 162gr Spire = 3 shots, 0.716"

Speer 160gr spitzer H1000 72gr, 3 shots= 0.654"

I have a .270 converted to 25-06 with a 26" Hart barrel. Hornady 120gr HP (now discontinued!!!!!) with 50gr H-1000 (low charge!), 4 shots= 0.274"

Sierra 120gr HP with 50gr H-1000, 4 shots = 0.368"

If I increase the charge to 55gr with the Hornady 120gr HP, the groups open:
3 shots = 0.618" 4 shots = 1.118"

[flashhole]

My rifles are Sauer 202 Deluxe Magnum and Ruger #1V.

[muzzleblast...]

H1000 has been my go to powder for over bore capacity cartridges like the .264 Win. Mag. 7mm STW and .300 Weatherby.

[hooligan1]

Fellas getting top results using h1000 in the 6.5 GAP Saum.
Matter of fact is its the goto powder in that cartridge today.