Comments on: Rick Jensen Temp-Tests New IMR 4451

By: Craig Bartley

Craig Bartley — Sat, 07 Jan 2017 15:22:14 +0000

Thanks for this article!

By: nick wimble

nick wimble — Thu, 15 Dec 2016 22:52:13 +0000

Been using 4451 (45gr) in .243win w/ Sierra 85gr HPBT WLR primer, PPU case 22″ Savage 10, and getting 3440 fps, with no sign of excessive pressure….and fantastic accuracy (.65) will work up a load with 85gr Nosler partitions, and hope for similar results, although nosler data indicates a max load of 41.5 gr, so will start at a lesser charge, than with the other bullets ….

By: Michael

Michael — Thu, 10 Sep 2015 16:51:28 +0000

Murray, what were your results with the 4451 in 260rem?

By: Murray

Murray — Mon, 02 Mar 2015 01:21:15 +0000

I just acquired the IMR4451 and IMR4166 .

I will do my testing with a 260 rem and a 1-8″ – 22-250 Rem .

Your test/article is great and much appreciated . Thank you .

By: Rick Jensen

Rick Jensen — Tue, 24 Feb 2015 03:39:26 +0000

Most 284 reloading data you find in books comes from the hunting days. The Berger manual is about the only ones that has any modern relative match bullet data in that I know of.

By: Guy

Guy — Tue, 24 Feb 2015 00:25:41 +0000

Off topic but Interesting that Nosler found that RL 15 was the most accurate powder in .284 with both a 160 and 175 grain bullets.

By: Rick Jensen

Rick Jensen — Mon, 23 Feb 2015 19:50:36 +0000

No Kris they were not. I shot slow enough and it was cold enough out side that day that I don’t believe barrel heat played any roll in the effects. All I was trying to accomplish with this was a true head to head comparison of IMR4451 to H4350

By: Guy

Guy — Mon, 23 Feb 2015 18:59:57 +0000

IMR 4350 and H4350 are close, Varget is much faster.

By: Kris

Kris — Mon, 23 Feb 2015 18:08:55 +0000

Where the rounds shot in a round-robin fashion (cold, room, hot, cold, room , hot…) to distribute the effects of barrel fouling and heating?

By: Bevan

Bevan — Mon, 23 Feb 2015 17:34:43 +0000

How different is H4350 from IMR4350? I am currently testing IMR4350 as a replacement for Varget. At least on the burn rate rankings the IMR4350 is very close to H4350.