H414 & 7mm-08

[badbrass]

Has anyone tried H414 with the 7mm-08? I'm loading Hornady 154gn SST's, any info on your finding's with any bullet would be apprecaited! Thanks.

 

[303carbine]

H414 and 7mm-08

I find that H414 is a sensitive powder and gives very inconsistent velocities from lot to lot from hot to cold days.. I prefer the Extreme line from Hodgdon because the load you work up on the cold days will be safe on the hottest days and will shoot to the same point of impact without velocity loss.
I have tried H4350 in my 7x57 shooting 140 Nosler Partition's and find that it outshoots any of the other powders I have tried like IMR 4895 and H414.

 

[tsavo]

I find that H414 is a sensitive powder and gives very inconsistent velocities from lot to lot. QUOTE]
I myself have not seen much variation, lot to lot. Even between 414 Gov't surplus and late production.
I have found H414 is an excellent powder for target work, in the 7-08. I use it for my Hunter Class BR with excellent results.
Having said that, I find if I keep the velocity down to between 2550-2650(not very good in windy conditions) with a 150 grain, I get extremely low FPS spread. Push it with more powder or less and H414 becomes erratic as previously stated. One just needs to find the sweet spot.

It also gives top velocities and decent accuracy in the heavier bullets, as well as, the old 150 Barnes X.

 

[Jimbo69]

I find that H414 is a sensitive powder and gives very inconsistent velocities from lot to lot. QUOTE]


I read somewhere H414 and H4350 was the same powder but dirrerent form (spherical/sticks).

I use both for 7mmSAUM, 300WSM 243 and 06

very little velocity spread with both powders.

 

[303carbine]

If they were the same then why two different names ??One is a dirty spherical and the other is a clean burning extruded.Though they have a similar burn rate they are different. A max load of H414 that is safe on cold day can be very different on a hot day.

 

[Pat Brennan]

I believe H414 is similar(maybe identical) to W760, not 4350.
I don't know about the temp variation for H414, but I tend not to load so hot that a temp change puts pressures in the danger zone. I naturally would prefer that velocities remain close, but an awful lot of game has been shot over the years in cold weather with the IMR series so I suspect we are micro-managing our equipment ( a North American trait), rather than becoming better hunters or at least hunting more each year.
First trick to shooting more game, is seeing more game!

 

[ben hunchak]

Yup....H-414 and ww760 are supposed to be identical as both are made by Win. the burning rate is close to4350!! Spherical powders have one large advantage over others in that they meter much better.(for those that don't weigh each charge!)

 

[Jimbo69]

If they were the same then why two different names ??

Their explanaition from the article was this if i remember correctly...

Different finished product = different burn rates and data.

1. spherical = faster burning a bit less powerfull

2. extruded = slower burning more powerful

One is a dirty spherical and the other is a clean burning extruded.Though they have a similar burn rate they are different. A max load of H414 that is safe on cold day can be very different on a hot day.

I shoot H414 and H4350 for years from -35c to 30c never had a single pressure problem within books specs. Yes, there is more velocity spread with H414 about 30 fps from last range trip.


Dirty spherical? when you work with or when you shoot? I remember shooting 7.62x39 Norinco ammo, now this stuff is dirty.

Hodgdon rifle powders are 1st class if you ask me.