Why does MY 300PRC hate H1000?

[Monteria]

As the title states, my 300 PRC hates H1000. It likes MagPro more and loves 7828. Because I want it to like H1000, ive got to thinking that here has to be a reason besides "just because".

I've tested with 215 Bergers and 225ELDM. In both cases, the powder preference was clear. All else was the same. Same ADG brass, same sizing, same primers tested, all else was equal.

H1000 also earned me one heck of a carbon ring.

There has to be a reason. H1000 is obviously slower than 7828. Is there a chance that my neck tension is too light to pressure up with the slower powder? Something else?

Who has ideas? I really want H1000 to work, but I'm near ready to give up on it.

 

[cornchuck]

Tagging in

Jason

 

[Longtine88]

So you may want to give more info on your process. Brass, new/resized, neck tension, CBTO (OL), powder ladder charge or OCW results, primers, barrel, barrel length, your process in general.

 

[Dmagna]

I have used H1000 in 3 prcs so far. Have not had an issue yet.

 

[lancetkenyon]

If it don't like it, don't use it.

 

[DJ Fergus]

The only rifle that I've had that preferred h1000 over all other powders was a 300 win mag shooting 208 elds. The combo didn't like 225 elds. Everything else I've loaded for preferred a different powder: retumbo, n570, n165, h4350 etc...

 

[Calvin45]

As the title states, my 300 PRC hates H1000. It likes MagPro more and loves 7828. Because I want it to like H1000, ive got to thinking that here has to be a reason besides "just because".

I've tested with 215 Bergers and 225ELDM. In both cases, the powder preference was clear. All else was the same. Same ADG brass, same sizing, same primers tested, all else was equal.

H1000 also earned me one heck of a carbon ring.

There has to be a reason. H1000 is obviously slower than 7828. Is there a chance that my neck tension is too light to pressure up with the slower powder? Something else?

Who has ideas? I really want H1000 to work, but I'm near ready to give up on it.

As I've said in an attempt to rile up people…

H1000 is OVERRATED!

If it likes 7828 just use 7828 haha, it's an oldie but a goodie and still the OG true magnum rifle powder in my opinion. I love the stuff. Been just fine without h1000 over here…

 

[Outdrmn]

When I started the journey into reloading I learned on this site that H1000 was the magic pixie dust for 300wm. My rifle obviously didn't get that memo, finally tried 7828 with beger 215's. For whatever reasons it loves it, also figured I'd be doing people a favor with one less person go'n after they're magic potion.

 

[Ucsdryder]

Mine only has 24 rounds down range, a combination of a weak attempt at barrel break in and a velocity ladder test. ADG brass, 225 eldm and h1000. It appears to love the combination. .050" off the lands.

Target at 100 with powder increasing in .5 grain increments. I can't remember but I think 7-8 shots. Would have to check my notes, but around 3.5 grains of powder change

 

[Calvin45]

When I started the journey into reloading I learned on this site that H1000 was the magic pixie dust for 300wm. My rifle obviously didn't get that memo, finally tried 7828 with beger 215's. For whatever reasons it loves it, also figured I'd be doing people a favor with one less person go'n after they're magic potion.

H1000 and rl26 are two powders I'm just fine never bothering with at this point. I don't need them. And apparently literally everyone else does. Let them fight over it.

I maintain that, while theyre a bit more temp sensitive and don't claim to clean your barrel for you, IMR 7828ssc and Alliant RL25 are the two most UNDERRATED true magnum burn rate powders. They don't get much print anymore. They're old news. And man are they easy to get great results with…

 

[haisardao]

H1000 and rl26 are two powders I'm just fine never bothering with at this point. I don't need them. And apparently literally everyone else does. Let them fight over it.

I maintain that, while theyre a bit more temp sensitive and don't claim to clean your barrel for you, IMR 7828ssc and Alliant RL25 are the two most UNDERRATED true magnum burn rate powders. They don't get much print anymore. They're old news. And man are they easy to get great results with…

How much swings in velocity do you see with RL 25? I have a killer 7 mm load and Berger 180 VLD Hunting + RL 25 and I hope it's not a bust here in Texas when the heat comes.

 

[Calvin45]

How much swings in velocity do you see with RL 25? I have a killer 7 mm load and Berger 180 VLD Hunting and I hope it's not a bust here in Texas when the heat comes.

You know it's been a while and I can't recall…I will say with pretty much any Alliant powder I have experience with (which isn't all of them by a long shot) my practice has been to only do load development in the summer months. Either that or content myself with not pushing things right to max (and if you're not after full speed…we'll that's what the Alliant powders are best at so seems silly haha)

In my experience it is not as temp sensitive as rl22.

 

[slikmrc]

Neck tension and primer change is two things to try. Could try and load H1000 to velocity of loads that shoot with other powder to see what happens. Should get a little more velocity out H1000 before you hit pressure.

 

[MagnumManiac]

If somebody did a primer test in a 300 Win Mag. using a rod in the bore, and measuring the amount of travel, I'd personally put this issue to bed for good.

Disregard the above, didn't intend quoting that.

H1000 and rl26 are two powders I'm just fine never bothering with at this point. I don't need them. And apparently literally everyone else does. Let them fight over it.

I maintain that, while theyre a bit more temp sensitive and don't claim to clean your barrel for you, IMR 7828ssc and Alliant RL25 are the two most UNDERRATED true magnum burn rate powders. They don't get much print anymore. They're old news. And man are they easy to get great results with…

Wish you kept that secret regarding RL25 to yourself!!
Have been using it since it first arrived on the scene. All 5 of my 300WM love the stuff. They also like H1000 and Retumbo too.
I have yet not found another powder that matches the accuracy or velocity of RL25 in my 300's and it also does a great job in my RUM….shoosh, don't tell anyone.

Cheers.