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  #11  
Old 08-02-2020, 03:12 PM
moorepower moorepower is offline
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I will take a stab and say you will never put too much 748 in a .223 case with a 40 grain bullet on top. I have far, far too many types of powder, but 8208 seems to be one of the best I have used with 50 grain and up. It's really harder to find a powder that does not work than one that does in a .223 if you do a ladder test. I will be playing with the A2200 data powder as I have an 8lb jug full and want to find a load with it. Many talk about hot weather and CFE223, but I "almost never" uses max loads that are on the upper end of the psi, almost.
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  #12  
Old 08-02-2020, 03:21 PM
Bill K Bill K is offline
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Many talk about hot weather and CFE223, but I "almost never" uses max loads that are on the upper end of the psi, almost.[/quote]

Many do talk about that, but they forget also, that this can occur with any powder in the hot weather. I am with you also, never really go to the max, so it is not a issue with hot weather. I prefer accuracy over speed, any day.
The old saying a slow accurate bullet trumps a fast inaccurate one.. Bill K
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  #13  
Old 08-02-2020, 03:49 PM
Johnly Johnly is offline
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Some of the old Speer manuals showed 28.0 of 748 as the max load for 55 grain bullets. Yowza!! 27.0 is where I stopped.

AA2200 might be the perfect powder for 40 gr. bullets as mentioned earlier. It's OK to slightly compress 748 and if it shoots well in your rifle be happy and might only be 100 fps slower than you will see with AA2200.
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  #14  
Old 08-02-2020, 06:28 PM
TinMan TinMan is offline
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I have used AA2200 with 40gr VMAX and NBT for a few years now, and it is one of my favorite PD loads. 24.5 gr of AA2200 gave me 3675fps and were fine at 100°F temperatures, noting that I do not leave any rounds in direct sun or in a warm chamber.
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  #15  
Old 08-03-2020, 05:04 PM
Daryl Daryl is offline
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Quote:
Originally Posted by Johnly View Post
Some of the old Speer manuals showed 28.0 of 748 as the max load for 55 grain bullets. Yowza!! 27.0 is where I stopped.

AA2200 might be the perfect powder for 40 gr. bullets as mentioned earlier. It's OK to slightly compress 748 and if it shoots well in your rifle be happy and might only be 100 fps slower than you will see with AA2200.
Hodgdon lists 26.3gr.W748 as max with the 55gr. Speer SP at 3,150fps, at a seemingly low 39,000 CUP for pressure. CFE223 and Varget produced much higher vel. in the 3,329fs to 3,384fps, same bullet.
The pressures given are 51.300PSI for the CFE223 and 49,700CUP for the Varget.
This makes me wonder why the low maximum for the 748, of 39,000CUP. Probably due to the 26.3gr. being a non-compressed load in the brass they used, ie:WW.
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Last edited by Daryl; 08-03-2020 at 07:21 PM.
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  #16  
Old 08-05-2020, 03:22 PM
charlesasmith charlesasmith is offline
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Default Compressed 748 load

Thanks for all of the feedback. Much appreciated.

Chuck
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  #17  
Old 08-05-2020, 07:00 PM
csterner csterner is offline
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redo your ladder when it's hot. use that for max. I don't like ball powders for that reason. I try to stick with "extreme" as much as possible, or if I have to use ball, usually end up a grain or two under max for safety in all situations.
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  #18  
Old 08-05-2020, 10:19 PM
Stormbringer Stormbringer is offline
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Default Benchmark

Benchmark is pretty much all I use for several years now in 223. I have used my loads (28 grains with 40's and 26.5 with 50's) in several rifles. Always seems to do very well especially the 28 grain powder & 40 grain bullet load regardless of AR or bolt gun.

Also very temperature insensitive. I have used it in the single digits up to well over 100.
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  #19  
Old 08-09-2020, 10:01 PM
Daryl Daryl is offline
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Benchmark also works well in my .45/70's.
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