40gr Nosler BT -- 30.3gr / H-335
40gr Nosler BT -- 31.0gr / H-335 very slight hesitation in bolt lift
40gr V-Max 31.5gr / H-335

50gr Nosler BT 28.5gr / H-335
50grain bullets 29.0gr / H-335
50gr V-Max 30.5gr / H-335

55gr Nosler BT 28.0gr / H-335

BLC2 is rated slightly slower than H335 -- 35 and 37 on Hodgdon's burn rate chart. 73 and 74 on Beartooth bullets, 73 and 74 on Stargate's site. BLC2 is rated slower in all instances.

According to Hodgdon Data Manual #26 (1994), BLC2 produces higher velocities at lower pressures:

H335 40 gr bullet, 26.2 gr charge, 3456 fps, 51,000 cup
BLC2 40 gr bullet, 28.5 gr charge, 3559 fps, 48,000 cup

H335 50 gr bullet, 26.0 gr charge, 3393 fps, 51,700 cup
BLC2 50 gr bullet, 28.0 gr charge, 3428 fps, 47,100 cup

H335 55 gr bullet, 25.3 gr charge, 3203 fps, 49,300 cup
BLC2 55 gr bullet, 27.5 gr charge, 3313 fps, 48,500 cup

According to the Hodgdon Data Manual, the AI charges listed at top here are:

20% over / 40 gr
17.3% over / 50 gr
10.6% over / 55 gr

So . . . realizing that pressure curves in powders are NOT straight line equations, what about moving BLC2 charges toward 10% to 20% over specified MAX according to bullet weight and checking for pressure signs?

It appears that BLC2 pressure curve shifts at higher bullet weights and pressures wherein H335 begins to produce lower pressures and higher velocities at bullet weights of 70 to 100 gr. in calibers such as .243.

We're not looking for 'science' here . . . We're looking for ideas. If you have 'science' we'll be happy to have it, but all opinions are welcome.

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.223 Ackley Improved Wildcat Forum:
http://www.hotboards.com/plus/plus.mirage?who=223ackleyimproved

[This message has been edited by Genghis (edited 04-07-2002).]

quote:

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Originally posted by 1GEEJAY:
Hello,
Try Accurate 2460.Works well in my .223.
1geejay
http:www.shooting-hunting.com

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We're loading here for .223 Ackley Improved and attempting to get maximum velocities that approach those of the 22-250. I'm sure Accurate 2460 works in your rifle. Nonetheless, what we're looking for in this post is wildcat load development, not published data.

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.223 Ackley Improved Wildcat Forum:
http://www.hotboards.com/plus/plus.mirage?who=223ackleyimproved