The Firing Line Forums

Go Back   The Firing Line Forums > The Skunkworks > Handloading, Reloading, and Bullet Casting

Reply
 
Thread Tools
Old June 16, 1999, 08:00 PM   #1
Southside_Johnny
Junior Member
 
Join Date: June 15, 1999
Posts: 6

I just made it out to the range and chrono'ed a couple of loads with AA
2220,2230,2230-C powder. I used two rifles, one a 20" 1x9 chrome lined bushmaster
w/ A2 bird cage, the other a 16 1x9 chrome moly steel( not chrome or SS) J&T post
ban upper. I also shot some Am eagle factory ammo.

____________________________20"______ 16"
55 fmj AM eagle___________3180______3026
50 HP AM eagle___________3200______3091
26g AA2230 55fmj__________3242______3250
22.0g AA2220 55fmj________2883______2815
22.4g AA2220 55fmj________2885______2822
22.8b AA2220 55fmj________2955______2900

25.0g AA2230-C 60 V-MAX___2956______2891
25.7g AA2230-C 55fmj______3038______3008
26.4g AA2230-C 55fmj______3094______3055
26.4g AA2230-C 55 NOS BT__3054______3023
26.4g AA2230-C 55 WIN PSP_3075______3052

All the above using once fired FED brass, OAL 2.245 except 55 PSP 2.235. Below is
data using once fired LC 91 brass

22.8g AA2220______________2925______2876

The AA2230 load with 26g with 55 fmj was to hot for the carbine, flowed primers,
brass looked ok out of the bushmaster but I'm going to back it off a bit ( to 3150 fps
) I've used the 26g load for years but this is a new keg of powder and the velocity is
higher, and you know what they say, change any componet and back off and retest.
These are an av. of 5 shots at 20 ft. The AA2220 had a lot of flash out of the 16"
rifle. I'm going to try a little higher load of 2220 in the future. WIN small rifle primers
were used throughout and all loads were given a slight crimp with a lee factory crimp
die. I'll test group size at a later date with scopes on the rifles.
Southside_Johnny is offline  
Old June 17, 1999, 05:03 PM   #2
Mal H
Staff
 
Join Date: March 20, 1999
Location: Somewhere in the woods of Northern Virginia
Posts: 14,483
Thanks for the data S-J. I'll be curious to see your tests when you do the group sizing.

A couple of questions - Where did you find the 2220? Is it now available anywhere online? What is 2230-C? Is it the Czech variety? Aren't you surprised to see the 16" bbl have a higher vel. than the 20"? How do you account for this? Also, both vel.'s are too high for the listed load as you suggested. Any ideas why?
Mal H is offline  
Old June 17, 1999, 07:47 PM   #3
Southside_Johnny
Junior Member
 
Join Date: June 15, 1999
Posts: 6
Both the AA2220 and AA2230-C are bulk powders that I bought from wideners. I think they are new surpluss powder. I paid $200 for 4 8lb kegs delivered for the 2220 and $239 for the 2230-C, the 2230-c is Accurate powder but is slightly slower than 2230. I was supprised to see the 16" barrel to shoot faster than the 20 with the 2230 load, why I don't know. This lb of powder (2230) with a 26 g load shoots 100 fps faster than I have chrono'ed before, why, maybe a different lot. As for all the vel being a little faster, I used federal American eagle brass for most of the loads, they weight 100 g each, most of my LC military brass is 94-96 g so the fed brass has less internal cap. This might be the reason my 2230 load is shooting hotter, I used mil brass last time.
I think that this data between the 20" chrome barrel and the 16" chrome moly barrel is decieving a little, I'm sure one is slicker than the other and if I had the same size barrel in the same config I;m sure one still would be a little faster.

HTH



------------------
Southside_Johnny

Southside_Johnny is offline  
Old June 17, 1999, 09:28 PM   #4
Mal H
Staff
 
Join Date: March 20, 1999
Location: Somewhere in the woods of Northern Virginia
Posts: 14,483
Thanks, I'll check Wideners for them.

I still wonder about the single 2230 load. If your hypothesis about one barrel being slicker than the other was true, then all the tests should show this effect. With a normal load like 26.0 gr. you shouldn't be able to get that vel. out of a 24" barrel, much less a 20" or 16". Frankly, I would be wary of that batch. Something just ain't right.
Mal H is offline  
Old June 18, 1999, 12:01 PM   #5
NJW
Senior Member
 
Join Date: November 5, 1998
Location: SouthWest
Posts: 204
If you had to pick between 2230C and the 2200, which do you like better in the .223? I have a jug of the 2230C but was thinking about getting some of the 2200. I can use the 2230C in 308 for my HK 91 but I am thinking of getting the 2200 specifically for loading .223.
Just like your overall opinion,

Thanks

NJW in AZ
NJW is offline  
Old June 19, 1999, 02:45 PM   #6
Southside_Johnny
Junior Member
 
Join Date: June 15, 1999
Posts: 6
I just chrono'ed some more loads today, I'll post later. With the AA2220 my vel peaked about 3100 fps in a 20 chrome barrel, I was shooting for 3150. The AA2230-c I can reach higher FPS, and in a savage.223 26" gun my load goes somewhere around 3300 fps w/ the 2230-c. I need to order more powder and I will go with the AA2230-c, a little more money, but still a bargan at $75/ 8lbs. I have yet to try it in .308, I think it will have a hard time knocking off 4064.



------------------
Southside_Johnny

Southside_Johnny is offline  
Reply

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 01:52 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
This site and contents, including all posts, Copyright © 1998-2014 S.W.A.T. Magazine
Copyright Complaints: Please direct DMCA Takedown Notices to the registered agent: thefiringline.com
Contact Us
Page generated in 0.06822 seconds with 9 queries