223???

Hi Kevin

Though it doesn't address your temperature question directly, you might want to check this one out from Higginson Powder. I've copied and pasted the following:
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"The replacement for the WC-845 has arrived, it is called WC-735.
I have attached our current price lists as well.
The burn rate of WC-735 is similar to 845, but with greater energy, allowing higher charge
weights and more velocity.
The only data we compiled for this powder is for the 223 Remington or 5.56mm NATO
round. It goes as follows:
Bullet: 50 gr. Hdy V-Max C.O.L. 2.250" 25.2gr. 3408fps @ 53,000PSI
Bullet: 55 gr. Hdy V-Max C.O.L. 2.250" 24.0gr. 3212fps @ 49,500PSI
24.3gr. 3253fps @ 51,700PSI Duplicates the 556
NATO load @ 3250 ft/sec
24.9gr. 3302fps @ 53,200PSI
Bullet: 62gr. SPR FMJBT C.O.L. 2.250" 23.3gr. 3062fps @ 53,800PSI
This powder is very clean burning and very efficient, so with the low charge weights and low
per pound cost, the per round cost is very attractive.
Thank you,
Andrew Higginson
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This is bulk surplus powder that is marketed without the "brand name" technical yarn, but which is popular with .223 shooters. Price is right! Hope this helps.
 
...best .223 powder?....

...everybody knows that it's Ramshot X-Terminator!...this was the powder than won the Switzerland military milspec tests!!!.......
 
Generally speaking ball powders are more temperature sensitive than stick powders.

Also, double-base powders (nitroglycerin plus nitrocellulose) are more temperature sensitive than single-base (nitrocellulose) powders.

Ball powders are almost always double base powders.

Most stick powders are single-base. There are some double-base stick powders, e.g. Vihtavuori's N500 series of high performance rifle powders (which are known to be more temperature sensitive than the N100 series of rifle powders).

Of the powders you list, all of them except Benchmark are double-base ball powders.

The small case mouth of a .223 can make a medium-length stick powder (e.g. H4895) a bit slow to charge, and a long-grain stick powder (I haven't tried) might even bridge on occasion.

There are short-grained stick powders that will meter very nicely - Reloder-7 and H-322 spring to mind (though I think Rx7 is a double-base powder).
 
HKMark23 said:
Hi Kevin

Though it doesn't address your temperature question directly, you might want to check this one out from Higginson Powder. I've copied and pasted the following:
-----------------------------------------------------------------------------------------------------------------------------------------------

"The replacement for the WC-845 has arrived, it is called WC-735.
I have attached our current price lists as well.
The burn rate of WC-735 is similar to 845, but with greater energy, allowing higher charge
weights and more velocity.
The only data we compiled for this powder is for the 223 Remington or 5.56mm NATO
round. It goes as follows:
Bullet: 50 gr. Hdy V-Max C.O.L. 2.250" 25.2gr. 3408fps @ 53,000PSI
Bullet: 55 gr. Hdy V-Max C.O.L. 2.250" 24.0gr. 3212fps @ 49,500PSI
24.3gr. 3253fps @ 51,700PSI Duplicates the 556
NATO load @ 3250 ft/sec
24.9gr. 3302fps @ 53,200PSI
Bullet: 62gr. SPR FMJBT C.O.L. 2.250" 23.3gr. 3062fps @ 53,800PSI
This powder is very clean burning and very efficient, so with the low charge weights and low
per pound cost, the per round cost is very attractive.
Thank you,
Andrew Higginson
-------------------------------------------------------------------------------------------------------------------------------------------------

This is bulk surplus powder that is marketed without the "brand name" technical yarn, but which is popular with .223 shooters. Price is right! Hope this helps.
Click to expand...

Not my intention to hi-jack this thread but any load development for 222 Rem. with this 735? At 20 bucks/pound it looks mighty interesting.:)
 
M12shooter said:
Not my intention to hi-jack this thread but any load development for 222 Rem. with this 735? At 20 bucks/pound it looks mighty interesting.:)
Click to expand...

Probably not, but if you were to compare published .223 vs. .222 load data for H335 and note the amount of charge reduction needed for .222, and if you applied that the the .223 data for WC735, you'd pretty much have everything you'd want.
 
2230c is my favorite powder with a lighter (40gr) vmax, excellent coyote load, very accurate in 1-12 rem 700, cheaper than varget too
 
55GR Nosler BT 26" Rem 700 1/9 twist 3415 average of 5 shots 1.65" 300y
RL 15 was a little faster not quite as accurate but very respectable the ES was lower with Rl15 than varget.
manitou
 
I just ordered 1 lbs of Ramshot TAC to try in my Robinson Arms XCR-L 1-9" twist 223 been using H322 which is very accurate but only produces velocities on the low side for the 223.

Also ordered Barnes 62gr TSX so I have a bit mor thump if a wolf comes in to my call...

I was very surprised to see how accurate my H322/Speer 52gr HP Varmint loads are in my XCR going to play with them as well...
 
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