Vihtavuori Powder Question

[DE-F-Open]

Looking for information comparing Vihtavuori powders to H4350

I have been trying to find a powder that I might use to replace the H4350 that I have been using in my F-Open rifle loads - .284 Win., using a Berger 180 Hybrid.

I would like to find a powder that has the same performance characteristics as H4350, including temperature sensitivity - if that's possible, and if not, then something close.

I would like to hear from anyone who might be able to recommend a Vihtavouri powder that comes close to or is comparable with H4350.

All opinions welcome.

Thanks,

John

 

[Bill Norris]

burn rate chart shows N150 and N550 being closest to H4350.

 

[JeffT]

burn rate chart shows N150 and N550 being closest to H4350.

View attachment 1282527

My experience in the past, was 150 a shade faster burning and 160 a shade slower.

 

[XTR]

burn rate chart shows N150 and N550 being closest to H4350.

View attachment 1282527

That table is either wrong, or the basis for the rankings doesn’t necessarily correlate to useage and pressure.
N150 loaded to FTR loads in a 308 loads almost gr for gr with Varget, it’s just bulkier. This exact search ( for an H4350 substitute) is how I found it and started using it to replace Varget 7 yrs ago.

N550 should be close but double based, I believe I’ve heard of a newish N555 that might hit the spot, but I don’t know anything about it.

 

[DE-F-Open]

Thanks guys - much appreciated -

How about temperature sensitivity? Same correlations? Different?

 

[XTR]

I think it's hard to use those charts with VV powders.

N550 is shown well slower than H4350; however, with N550 in a 308 case I was able to get 215s to velocities I will not repeat, and destroy pockets in new Lapua Palma in one shot. Genuine Aussie loads, but with H4350 I was never able to over pressure even with a long freebore and a case slam full, 49ish grains. But even then in all but the fastest lots of H4350 the velocity wasn't there.

 

[XTR]

John, I think I recall that there is some discussion that the N555 is supposed to be more stable. Not something that's on my 308 radar though.

I don't think N550 will work for us here in the US. @Laurie might be able to weigh in on whether of not the UK shooters have used it. It's a high energy powder with a fair shot of nitro in it, so it's not going to be particularly stable.

 

[DE-F-Open]

I think it's hard to use those charts with VV powders.

N550 is shown well slower than H4350; however, with N550 in a 308 case I was able to get 215s to velocities I will not repeat, and destroy pockets in new Lapua Palma in one shot. Genuine Aussie loads, but with H4350 I was never able to over pressure even with a long freebore and a case slam full, 49ish grains. But even then in all but the fastest lots of H4350 the velocity wasn't there.

Well that's certainly intersting - thanks, that's good to know

 

[6ShotsOr5?]

If you are just looking for a temp stable sub for Hodgdon H4350 and it doesn’t have to be Vihtavuori, check out the new Reloder TS 15.5 as a possible alternative. Several forum members are testing it now, so you will find a few other threads about it.

 

[Enzo]

Alla ricerca di informazioni per confrontare le polveri Vihtavuori con H4350

Ho cercato di trovare una polvere che potrei usare per sostituire l'H4350 che ho usato nei miei carichi di fucile F-Open - .284 Win., usando un Berger 180 Hybrid.

Vorrei trovare una polvere che abbia le stesse caratteristiche prestazionali dell'H4350, inclusa la sensibilità alla temperatura - se possibile, e in caso contrario, qualcosa di simile.

Mi piacerebbe sentire da chiunque potrebbe essere in grado di consigliare una polvere Vihtavouri che si avvicina o è paragonabile a H4350.

Tutte le opinioni sono ben accette.

Grazie,

John

 

[Enzo]

C jhon

Looking for information comparing Vihtavuori powders to H4350

I have been trying to find a powder that I might use to replace the H4350 that I have been using in my F-Open rifle loads - .284 Win., using a Berger 180 Hybrid.

I would like to find a powder that has the same performance characteristics as H4350, including temperature sensitivity - if that's possible, and if not, then something close.

I would like to hear from anyone who might be able to recommend a Vihtavouri powder that comes close to or is comparable with H4350.

All opinions welcome.

Thanks,

John

 

[Enzo]

Se stai solo cercando un sub stabile temporaneo per Hodgdon H4350 e non deve essere Vihtavuori, dai un'occhiata al nuovo Reloder TS 15.5 come possibile alternativa. Diversi membri del forum lo stanno testando ora, quindi troverai alcuni altri thread a riguardo.

Alla ricerca di informazioni per confrontare le polveri Vihtavuori con H4350

Ho cercato di trovare una polvere che potrei usare per sostituire l'H4350 che ho usato nei miei carichi di fucile F-Open - .284 Win., usando un Berger 180 Hybrid.

Vorrei trovare una polvere che abbia le stesse caratteristiche prestazionali dell'H4350, inclusa la sensibilità alla temperatura - se possibile, e in caso contrario, qualcosa di simile.

Mi piacerebbe sentire da chiunque potrebbe essere in grado di consigliare una polvere Vihtavouri che si avvicina o è paragonabile a H4350.

Tutte le opinioni sono ben accette.

Grazie,

John

Co john la polvere giusta per te è la vihtavuori n 160 , la n 555 sempre vihtavuori la rs62 svizzera ma forse la migliore di tutte è la vostra best seller imr 4350 se ancora prodotta. Ciao from italy

 

[DE-F-Open]

If you are just looking for a temp stable sub for Hodgdon H4350 and it doesn’t have to be Vihtavuori, check out the new Reloder TS 15.5 as a possible alternative. Several forum members are testing it now, so you will find a few other threads about it.

Thank you

 

[ShootDots]

Viht has a completely NEW powder out. The new powder is VN555. I have not used it but others whom I trust have. It is only very slightly slower than H4350. If it is like VN565, also new, it will be as temp stable as the very best of powders and it should burn very clean as other VV powders do.

 

[mgdietrich]

N160 works great in 284, easier on barrel than h4350 too.

 

[ebb]

When looking at that chart I would be tempted to try H100V it may be even easier on a barrel than the VV powders. Ive used vv165 in my 6.5-284 and have never been sorry.

 

[XTR]

I do know that N160 works great in my 6SLR, and reported to do the same in about every other short action 6, and powders that work in the 308 sized 6s tend to work in the 284. Might be worth testing, someone probably has.

 

[hogpatrol]

VV load data for .284W

Rifle reloading data | Handloading | Rifle calibers | Centerfire Rifle bullets | Reload your own ammo - Vihtavuori

Vihtavuori offers rifle reloading data for numerous calibers and bullets for match and hunting purposes. Never exceed maximum loads.

www.vihtavuori.com

 

[Capt. Oblivious]

N165 is what your looking for in 284 with 180gr

 

[JohnKielly]

I have downloaded VV reloading manuals over a number of years until they stopped making them downloadable & have found that their loads have become more conservative over time, albeit not to the extent quoted here.