The Accurate Reloading Forums
What powder is in Black Hills 77 grain OTM 5.56 load?
21 August 2020, 07:09
ColoradoMattWhat powder is in Black Hills 77 grain OTM 5.56 load?
Anyone know what powder Black Hills Amunition puts in their 5.56 77 grain open tip match load? This is a notoriously accurate and factory load. Anyone have their own accurate recipe using 77 grain OTM’s?
Matt
FISH!!
Heed the words of Winston Smith in Orwell's 1984:
"Every record has been destroyed or falsified, every book rewritten, every picture has been repainted, every statue and street building has been renamed, every date has been altered. And the process is continuing day by day and minute by minute. History has stopped. Nothing exists except an endless present in which the Party is always right."
quote:
Originally posted by ColoradoMatt:
Anyone know what powder Black Hills Amunition puts in their 5.56 77 grain open tip match load? This is a notoriously accurate and factory load. Anyone have their own accurate recipe using 77 grain OTM’s?
You might find this interesting:
https://www.youtube.com/watch?...-Yk&feature=emb_logoAlso, you may have seen this series, but if not - have at it:
https://www.youtube.com/watch?...8_5jqnedzK6bhXWzZyVl
Regards - GCF
"Sometimes you make eight - Sometimes you hit dirt"
02 September 2020, 00:49
Opus1It is a proprietary blend. Probably as secret as the Coke and Kentucky Fried Chicken recipes.
___________________
Just Remember, We ALL Told You So.
02 September 2020, 07:27
perryTAC
Perry
05 September 2020, 02:16
matt salmThe old standbys were Reloader 15 or one other that escapes me at the moment. That’s what the AMU used anyway (15 years ago).
Shoot straight, shoot often.
Matt
09 September 2020, 20:11
StonecreekQuestions like this are often asked by people seeking to duplicate a factory load. However, ammunition factories virtually never use "canister" grade powders. They buy powders in large lots which the powder manufacturer can't sell at retail since the lot varies from the standards (burning speed, etc.) for that particular retail powder. The ammunition manufacturer then tests the powder (and perhaps blends it with other lots) to determine how much of it to load to achieve their desired ballistics.
Therefore, it is generally not possible, simply by knowing the basic powder used in a particular load, to duplicate that load.
10 September 2020, 03:32
Mike McGuirequote:
Originally posted by Stonecreek:
Questions like this are often asked by people seeking to duplicate a factory load. However, ammunition factories virtually never use "canister" grade powders. They buy powders in large lots which the powder manufacturer can't sell at retail since the lot varies from the standards (burning speed, etc.) for that particular retail powder. The ammunition manufacturer then tests the powder (and perhaps blends it with other lots) to determine how much of it to load to achieve their desired ballistics.
Therefore, it is generally not possible, simply by knowing the basic powder used in a particular load, to duplicate that load.
It used to be called non canistered powder. Winchester use to use non canistered 4064 for 270 grain Power Point and 300 grain Silvertip 375 ammo.
10 September 2020, 07:08
ColoradoMattquote:
Originally posted by gcf:
quote:
Originally posted by ColoradoMatt:
Anyone know what powder Black Hills Amunition puts in their 5.56 77 grain open tip match load? This is a notoriously accurate and factory load. Anyone have their own accurate recipe using 77 grain OTM’s?
You might find this interesting:
https://www.youtube.com/watch?...-Yk&feature=emb_logoAlso, you may have seen this series, but if not - have at it:
https://www.youtube.com/watch?...8_5jqnedzK6bhXWzZyVl
I went through most of the 15 part series. It looks like AA2520 and PP-Varmint are the best powders for the application, with PP-Varment giving the mildest pressures. Lots of good loads were found with other powders that were 50-100 FPS slower.
Matt
FISH!!
Heed the words of Winston Smith in Orwell's 1984:
"Every record has been destroyed or falsified, every book rewritten, every picture has been repainted, every statue and street building has been renamed, every date has been altered. And the process is continuing day by day and minute by minute. History has stopped. Nothing exists except an endless present in which the Party is always right."
10 September 2020, 19:35
richjAA2015 or AA2215?
AA2215 = IMR4198
oup may be wrong aa2207 is 4198
10 September 2020, 20:44
vinesquote:
Stonecreekone of us posted document.write)+'</nobr>');09 September 2020 PostQuestions . However, ammunition factories virtually never use "canister" grade powders. They buy powders in large lots which the powder manufacturer can't sell at retail since the lot varies from the standards
that's not all ways true.. Hornday uses a lot of Hodgdon powders, like H4350 and Varget.
some of your old reloading books will tell you which canister powders was used in factory ammo loads
10 September 2020, 20:56
richjAA2015 an Accurate powder is similar to Benchmark or IMR3031
10 September 2020, 23:23
Stonecreekquote:
that's not all ways true.. Hornday uses a lot of Hodgdon powders, like H4350 and Varget.
Like I said, the powders used by ammunition companies are usually lots of standard production powders which
vary from the specs of canister grade powders. It may be quite true that Hornaday or Remington or whomever uses a version of IMR4064 or H4895, etc., but the version usually exhibits burning characteristics that make it unsuitable to sell as the standard canister powder of that number.
11 September 2020, 06:50
ColoradoMattquote:
Originally posted by ColoradoMatt:
quote:
Originally posted by gcf:
quote:
Originally posted by ColoradoMatt:
Anyone know what powder Black Hills Amunition puts in their 5.56 77 grain open tip match load? This is a notoriously accurate and factory load. Anyone have their own accurate recipe using 77 grain OTM’s?
You might find this interesting:
https://www.youtube.com/watch?...-Yk&feature=emb_logoAlso, you may have seen this series, but if not - have at it:
https://www.youtube.com/watch?...8_5jqnedzK6bhXWzZyVl
I went through most of the 15 part series. It looks like AA2520 and PP-Varmint are the best powders for the application, with PP-Varment giving the mildest pressures. Lots of good loads were found with other powders that were 50-100 FPS slower.
I changed what I typed in the above post. I meant to type AA2520 instead of AA2015. My mistake. Very sorry!
Matt
FISH!!
Heed the words of Winston Smith in Orwell's 1984:
"Every record has been destroyed or falsified, every book rewritten, every picture has been repainted, every statue and street building has been renamed, every date has been altered. And the process is continuing day by day and minute by minute. History has stopped. Nothing exists except an endless present in which the Party is always right."