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IMR4350 vs. H4350

 
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  #8  
Old 03-19-2012, 07:46 AM
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Re: IMR4350 vs. H4350

Quote:
Originally Posted by lloydsmale View Post
well jack all i can post is facts that came from actualy chonographing my loads running powders to the point that pressure signs start developing then backing off a bit. In my experience the 257 is a bit overbore for powders as fast as 4350. Also id look at the pressure that manual gives for that 4350 load then compare it to the pressure for the 4831 load and id bet there loading 4350 to a higher pressure to beat powders like 4831, 7828, re25 ect. Run those powders to the same pressure and see what you get.
I'll grant you the experiece that you have.

I am just stating the facts from Hodgdon.

75gr vmax

4381 Max 75.0 gr Vel. 3841 Pres. 51,900
4350 Max 70.0 gr Vel. 3905 Pres. 51,800

117gr Hrdy SPBT

4381 Max 66.0 gr Vel. 3252 Pres. 52,300
4350 Max 60.5 gr Vel. 3266 Pres. 52,000

It is very similiar to that throughout the weight of bullets in their data.

I am sure that different barrels will return different results.

Actually, the one powder they did push the pressure up to show higher velocity was the 7828.

The information I first posted was a direct comparison of 4350 vs 4831. Based on Hodgdon data.

Both are great powders and I use them both. Grant you, not in a 257. I have found their data to be fairly close on the cartridges that I reload.

The link to Hodgdon data is already posted in this thread if you would like to check my data.
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  #9  
Old 03-19-2012, 11:29 AM
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Location: Central Oregon
Posts: 785
Re: IMR4350 vs. H4350

I loaded some rounds up for my brother in his .270 weatherby using Imr 7828 with 130gr accubonds! The best load out of his gun was right at max in the books, consistent .5-.75 moa out of a stock deluxe. I know its not the same cal but Id try it!
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  #10  
Old 03-19-2012, 11:41 AM
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Join Date: Dec 2009
Location: NW MT
Posts: 2,587
Re: IMR4350 vs. H4350

Here is how Hodgdon list burn rates,IMR-4350=113, h-4350=114,IMR-7826=132,H-1000=136. Fast to slow1-145.
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  #11  
Old 03-19-2012, 07:08 PM
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Re: IMR4350 vs. H4350

one thing you probably need to look at with that data is thats real mild pressures for the 257. Push both powders to around 57000 plus and the slower powders will leave the faster ones in there dust.
Quote:
Originally Posted by JackiinSD View Post
I'll grant you the experiece that you have.

I am just stating the facts from Hodgdon.

75gr vmax

4381 Max 75.0 gr Vel. 3841 Pres. 51,900
4350 Max 70.0 gr Vel. 3905 Pres. 51,800

117gr Hrdy SPBT

4381 Max 66.0 gr Vel. 3252 Pres. 52,300
4350 Max 60.5 gr Vel. 3266 Pres. 52,000

It is very similiar to that throughout the weight of bullets in their data.

I am sure that different barrels will return different results.

Actually, the one powder they did push the pressure up to show higher velocity was the 7828.

The information I first posted was a direct comparison of 4350 vs 4831. Based on Hodgdon data.

Both are great powders and I use them both. Grant you, not in a 257. I have found their data to be fairly close on the cartridges that I reload.

The link to Hodgdon data is already posted in this thread if you would like to check my data.
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  #12  
Old 03-20-2012, 07:05 AM
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Join Date: Jan 2012
Location: Hot Springs, South Dakota
Posts: 504
Re: IMR4350 vs. H4350

Quote:
Originally Posted by lloydsmale View Post
one thing you probably need to look at with that data is thats real mild pressures for the 257. Push both powders to around 57000 plus and the slower powders will leave the faster ones in there dust.
Well, considering the OP only asked about the two powders above, I'll stay with my answer.
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  #13  
Old 03-20-2012, 08:33 AM
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Join Date: Jul 2007
Posts: 933
Re: IMR4350 vs. H4350

Don;t ya just LOVE it when a guy ask's a question, then a couple "net genius" types get in a "mine's bigger than yours" Bull Crap tirade ! Just answer the guys question, as asked !

Sorry, but I'm seein' this more and more here and don't care for it.
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  #14  
Old 03-20-2012, 08:51 AM
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Join Date: Jan 2012
Location: Hot Springs, South Dakota
Posts: 504
Re: IMR4350 vs. H4350

Forums have always been about disagreement. Gives everyone more than 1 perspective.

Your post is the type that takes things to a personal level.
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