Reducing charges
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Reducing charges
Do any of you fine fellows have any experience using Mr. Lee's pressure and velocity factors for reducing loads for cast bullet use? If so, what were your results/conclusions as to the accuracy and safety of using these factors.
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Re: Reducing charges
The only reduced loads I've done are with Unique and Trail Boss and Trail Boss worked the best for me.
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Re: Reducing charges
Yes, I have used them against my pressure trace equipment and found them accurate.jdrslyr75 wrote:Do any of you fine fellows have any experience using Mr. Lee's pressure and velocity factors for reducing loads for cast bullet use? If so, what were your results/conclusions as to the accuracy and safety of using these factors.
Michael
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Re: Reducing charges
Thanks RD. Lee also states that charges can be reduced as much as 30% and in some cases as much as 50%. (The slower powders should be reduced the least) By reducing loads this much, a lot of air space is left in the case and the powder moves around a lot. Is this generally OK or do you have to look at powders individually to determine if it is OK or not? What I am trying to determine is which powder to select for .223 Remington loads where I will be loading cast 55-60 grain (Lyman #2 clone, water dropped) gas checked bullets with a muzzle velocity of between 2000-2200 fps. I'm having trouble finding this load in a published manual.
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Re: Reducing charges
I should add that I am looking for about 28k psi or less (but not too much less) for this load.
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Re: Reducing charges
I use the Lee data but also hedge my bets by usually using AR2206H (called H4895 for the cousins). Hodgdon tell us that this is safe to reduce down to 60% of jacketed data so I feel very safe between this data and the Lee data.
https://www.hodgdon.com/PDF/H4895%20Red ... 0Loads.pdf
I have done some smaller reductions of AR2208 (Varget) using the Lee data for cast loads. I don't use a filler.
There is reduced loads for common cowboy loads in the ADI and Hodgdon free pdf downloads using AR2206H (H4895) or AR2207 (H4198).
For very reduced loads I use Trailboss.
http://www.imrpowder.com/PDF/Trail-Boss-data.pdf
https://www.hodgdon.com/PDF/H4895%20Red ... 0Loads.pdf
I have done some smaller reductions of AR2208 (Varget) using the Lee data for cast loads. I don't use a filler.
There is reduced loads for common cowboy loads in the ADI and Hodgdon free pdf downloads using AR2206H (H4895) or AR2207 (H4198).
For very reduced loads I use Trailboss.
http://www.imrpowder.com/PDF/Trail-Boss-data.pdf