Anyone have any or know where I can find loading data for using AA 5744 in the 458 Lott ?

I load 40 grains behind various cast bullets between 450-500 grains for about 1600 fps.

send Accurate Powder an email with what you're looking for and they'll usually respond within a day or so. very helpful folks.

I got some info from Accurate Arms on using 5744 in the Lott. I had requested info for 5744 and data 2200. Here is their response.

Unfortunately we do not have any specific lab tested data on this caliber. (See notes 1.1 and 2.1 below).

However, we can provide you with some guideline, based on calculations and information from other sources.

Caliber: .458Lott.

Application: Rifle.

Barrel length: 24â€

Reduced loads:

Powder: Accurate -- 5744.

Bullet weight: 300grains.

Low load: 47.0 grains (1900 – 2000 ft/p/sec).

Max load: 68.0 grains (2600 – 2700 ft/p/sec) Max pressure!!

Bullet weight: 350grains.

Low load: 44.0grains (1800 – 1900 ft/p/sec)

Max load: 63.0 grains (2450 – 2550 ft/p/sec). Max pressure!!

Bullet weight: 400 grains.

Low load: 42.0grains (1750 – 1850 ft/p/sec)

Max load: 61.0 grains (2300 – 2400 ft/p/sec). Max pressure!!

Bullet weight: 500grains.

Low load: 38.0grains (1500 – 1600 ft/p/sec)

Max load: 54.0 grains (1500 – 1600 ft/p/sec). Max pressure!!



Powder: Accurate -- 2200.

Bullet weight: 350grains.

Start load: 74.0grains (2500 – 2600 ft/p/sec)

Maximum load: 83.0 grains (2600 - 2700ft/p/sec) Max pressure!!.

Bullet weight: 400grains.

Start load: 71.0grains (2300 – 2400 ft/p/sec)

Maximum load: 79.0 grains (2450 – 2550 ft/p/sec) Max pressure!!.

Bullet weight: 500grains.

Start load: 68.0grains (2100 – 2200 ft/p/sec)

Maximum load: 75.0 grains (2250 - 2350ft/p/sec) Max pressure!!.

NOTE:

It’ important to note that:

Whenever Western powders Inc do not test, and have actual data, on a particular caliber or caliber/bullet combination, we may in some cases provide some guideline. This information will be based on various procedures and calculations, or from other very reliable sources.

1. SAFETY is our prime concern therefore:

1.1. The loading data is conservative, especially regarding the minimum or start load to ensure a safe baseline to work from.

1.2. The safety margin built into the start load might be more than the customary 10%.

2. We strongly recommend.

2.1. To always start at the recommended minimum “START†load.

2.2. If at all possible, measure the velocity.

2.3. Contact us again with the velocity data, so that we can verify, and correlate with our calculated/estimated data. The data should also be compared, with the typical velocity levels accepted in the industry, for that particular caliber-bullet weight combination.





Regards

Johan Loubser

Ballistician

Western/Accurate Powders

Tel: 1800 497 1007 or (406) 234 04 22

Part of Western Powders -- Miles City Montana

For all Sales, Marketing, Pricing Distribution and related issues, please call toll free 800-497-1007.



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IMPORTANT NOTE: Allways begin loading from the minimum "START charge and carefully develop loads by increasing in small increments of 2% towards the Maximum load.

Western Powders Inc. disclaims all possible liability for damages including, actual, incidental and consequential, resulting from usage of the information or advice contained in this message.

Use the data and advice at your own risk, and with extreme caution.

We also request that you visit our website at www.accuratepowder.com for more comprehensive information.

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does the bottom line mean we have a scofflaw here?

regards,

Rich
DRSS