IMR 4451

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21 March 2018, 20:39

JGRaider

quote:
Originally posted by vapodog:
Is IMR 4451 a good substitute for H-4350?

Best I've found so far.

22 March 2018, 07:32

sep

I tried it in 338 WM and it seemed to run a little slower than both H4350 and IMR 4350. (See Hodgdon Reloading Center for data with these powders)

Rick Jensen tested velocity and temp sensitivity in the 284 Win and H4350 proved a bit more stable.

http://bulletin.accurateshoote...t-h4350-vs-imr-4451/

PrecisionRifleBlog came up with similar results

http://bulletin.accurateshoote...-vs-hodgdon-extreme/

25 March 2018, 16:49

slugslinger

Here's a good Burn rate chart (not that burn rate tells the whole story).

I've had some "interesting" results with IMR 4955 which is also an Enduron powder, that showed pressure sign well before maximum loads. So, as always, start low and work your way up.

This chart update even has the new IMR 8133 Enduron Powder.

https://www.hodgdon.com/wp-con.../burn-rate-color.pdf

Regards,
Dave

03 April 2018, 00:26

Atkinson

Didn't it get a recall along with another powder about the same time..Higher pressure that the first article brought to light in one of the mags praising it!!! I think that's the one..If so then H414 is proven the best of all.

Ray Atkinson
Atkinson Hunting Adventures
10 Ward Lane,
Filer, Idaho, 83328
208-731-4120

rayatkinsonhunting@gmail.com

03 April 2018, 15:14

416Tanzan

quote:
Originally posted by Atkinson:
Didn't it get a recall along with another powder about the same time..Higher pressure that the first article brought to light in one of the mags praising it!!! I think that's the one..If so then H414 is proven the best of all.

Ray, if you have a source for this, please share.

You might be confusing the Enduron powders with a specific batch of Ramshot Hunter

"RECALL NOTICE
Powder Type: Ramshot Hunter
Lot Number: 489 bottled on 08/05/16, may appear as 080516489 (lot number on back of bottle)"

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"A well-rounded hunting battery might include:
500 AccRel Nyati, 416 Rigby or 416 Ruger, 375Ruger or 338WM, 308 or 270, 243, 223" --
Conserving creation, hunting the harvest.

22 April 2018, 01:52

Kevin Rohrer

Also IMR4007SSC

IMR4007SSC Recall

Member:
Orange Gunsite Family, NRA--Life, Varmint Hunters' Assn., ARTCA, and American Legion.

"An armed society is a polite society" --Robert Heinlein via Col. Jeff Cooper, USMC

Caveat Emptor: Don't trust *Cavery Grips* from Clayton, NC. He is a ripoff.

22 April 2018, 01:54

Kevin Rohrer

I will be working-up a load for a new 25-06 w/ IMR4451 over the next 2-days, so I hope it is good.

25 April 2018, 09:09

rodell

I like it, easy to use. You will want to run it at the upper end of the load range to keep it the cleanest. You will have no copper, but it is dirty.

27 April 2018, 03:44

Kevin Rohrer

So far, I have put 15-rounds of Varget and 15- of 4451 thru my Cooper, in that order. There was some telltale copper that came out of the bore afterwards. As for accuracy, I am fire forming 25-06AI, so the accuracy is not that great. Groups from both powders are around 1".

I will be taking it to the range next week to shoot both loads thru my chrony.