Accurate Arms Powder
Moderator: joseyclosey
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Brian the Brit
- Contributing Member
- Posts: 108
- Joined: Tue Feb 17, 2004 8:15 pm
- Location: Dorset, England
A Quiet Life
For your information, mate, I took up shooting in 2001 long after the battle to retain hanguns had been lost so please don't lecture me about its causes.
Now now Gentlemen!
Sometimes on these boards we read things that we personally might not agree with, but whilst we are here we will respect the individuals right to have their view and position on things.
A robust debate about differences is good so long as it doesn't get personal.
So lets enjoy these freedoms to differ, whilst we still have them, in a mature way.
Lifes too precious not to have fun.
No more need be said on this.
Sometimes on these boards we read things that we personally might not agree with, but whilst we are here we will respect the individuals right to have their view and position on things.
A robust debate about differences is good so long as it doesn't get personal.
So lets enjoy these freedoms to differ, whilst we still have them, in a mature way.
Lifes too precious not to have fun.
No more need be said on this.
Last edited by dromia on Thu Nov 16, 2006 1:32 pm, edited 1 time in total.
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Brian the Brit
- Contributing Member
- Posts: 108
- Joined: Tue Feb 17, 2004 8:15 pm
- Location: Dorset, England
Westlander?
In the end I had to write to Western Powders using airmail as their website seems to have taken a disliking to my browser. I gave them my e-mail address in the hope of a quick reply and will post their response when received.
There's a sticker on my tubs of powder "LOVEX D 073-06 Manufactured by Explosia". I did a Google search and found that the powder is manufactured in the Czech Republic. Unfortunately there is no loading data on their website, hence the letter to America.
There's a sticker on my tubs of powder "LOVEX D 073-06 Manufactured by Explosia". I did a Google search and found that the powder is manufactured in the Czech Republic. Unfortunately there is no loading data on their website, hence the letter to America.
Ahh!
The joys of a global economy.
The last time I was back home in Scotland last Hogmanay I went to a local Co-op in Tain, Black Isler will enjoy this, to get some crowdie.
They were sold out and I was told that it would be a week 'till the next delivery, I pointed out of the window to the dairy where the crowdie was made, a mere cockstride away, and asked as to why it would take a week.
She told me that the Co-op destined crowdie was lorried down to england, then lorried back to Glasgow for distribution to the Scottish shops.
Joseph Heller was inded a seer.
The joys of a global economy.
The last time I was back home in Scotland last Hogmanay I went to a local Co-op in Tain, Black Isler will enjoy this, to get some crowdie.
They were sold out and I was told that it would be a week 'till the next delivery, I pointed out of the window to the dairy where the crowdie was made, a mere cockstride away, and asked as to why it would take a week.
She told me that the Co-op destined crowdie was lorried down to england, then lorried back to Glasgow for distribution to the Scottish shops.
Joseph Heller was inded a seer.
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Brian the Brit
- Contributing Member
- Posts: 108
- Joined: Tue Feb 17, 2004 8:15 pm
- Location: Dorset, England
Totally off topic
I saw in The Times yesterday that Youngs (the Scottish seafood company) is going to sack 120 local process employees paid £6 an hour and ship scampi to Thailand for hand peeling by employees paid £0.25 an hour and then freighter it back to Annan for breading, packaging and distribution.
600 tons of prawns will make the 12,000 mile, 9 week round trip every year.
Global warming? Carbon footprint? You couldn't make it up!
600 tons of prawns will make the 12,000 mile, 9 week round trip every year.
Global warming? Carbon footprint? You couldn't make it up!
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Brian the Brit
- Contributing Member
- Posts: 108
- Joined: Tue Feb 17, 2004 8:15 pm
- Location: Dorset, England
Update on AA2520 Loading Data
Here's the reply I received from Western/Accurate Powders' ballistician in response to my recent query.
The loads for the 174gr bullet on our website from the No 2 guide are confusing. The loads are very conservative. The 150gr and 180gr loads are more in line with reality. You can use the 180gr data as a guideline for the 174gr.
The more correct pressure specification in psi (piezo) (CIP protocol) - Does anyone understand this? - is actually 3650 bar = 52939 psi. There is thus plenty of room left regarding pressure. It appears that your N140 load was very low. - Gulp! I was using 41 gr against the max of 41.7gr which gives noticeable primer flattening.
Being an extruded powder, with superior ignition characteristics, the dynamics of the weapon will be quite different. Spherical powders are more sensitive to ignition (or PPS - Powder Position Sensitivity) and the performance level and you will have to increase your loads towards the 44gr margin.
This will make the round more efficient, and hopefully more accurate.
If you find that some of your guns prefer the lower performance levels to achieve the sweet spot, you will have to consider our extruded 2015 or even the faster 2230 spherical powder.
I mentioned that I was looking for lighter loads for my Lee Metford Cavalry Carbine and my Long Lee.
All this comes with the usual disclaimers. I have loaded some test rounds with 40, 40.5 and 41 grains for the P14 and confidently expect tighter groups as the velocity rises.[/b]
The loads for the 174gr bullet on our website from the No 2 guide are confusing. The loads are very conservative. The 150gr and 180gr loads are more in line with reality. You can use the 180gr data as a guideline for the 174gr.
The more correct pressure specification in psi (piezo) (CIP protocol) - Does anyone understand this? - is actually 3650 bar = 52939 psi. There is thus plenty of room left regarding pressure. It appears that your N140 load was very low. - Gulp! I was using 41 gr against the max of 41.7gr which gives noticeable primer flattening.
Being an extruded powder, with superior ignition characteristics, the dynamics of the weapon will be quite different. Spherical powders are more sensitive to ignition (or PPS - Powder Position Sensitivity) and the performance level and you will have to increase your loads towards the 44gr margin.
This will make the round more efficient, and hopefully more accurate.
If you find that some of your guns prefer the lower performance levels to achieve the sweet spot, you will have to consider our extruded 2015 or even the faster 2230 spherical powder.
I mentioned that I was looking for lighter loads for my Lee Metford Cavalry Carbine and my Long Lee.
All this comes with the usual disclaimers. I have loaded some test rounds with 40, 40.5 and 41 grains for the P14 and confidently expect tighter groups as the velocity rises.[/b]
Brian,
There are several methods of pressure measurement, of which the piezo transducer is one - the other used is the copper crusher method. Of course, these give different readings... CIP is the international organisation for firearms and ammo proof and standardisation (see http://www.proximedia.com/web/cip.html). Interior ballistics... quite a fascinating subject indeed! Sometimes quite frustrating too....
There are several methods of pressure measurement, of which the piezo transducer is one - the other used is the copper crusher method. Of course, these give different readings... CIP is the international organisation for firearms and ammo proof and standardisation (see http://www.proximedia.com/web/cip.html). Interior ballistics... quite a fascinating subject indeed! Sometimes quite frustrating too....
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Will Durant
- Posts: 16
- Joined: Sun Jun 26, 2005 6:18 pm
2520 powder
While it has been only a few months since the original posting, has anyone worked up a set of data regards 2520 and various bullet weights? I am about to embark upon a reloading execise for the #4.As regards the "rules and regulations"impressed upon honest men,you have my honest sympathy.Will