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Post by uhjohnson on Sept 14, 2010 21:36:34 GMT -5
i have 100 rounds of cast bullets .35 (brinell 15) in both 194 and 213 grains and have 10 pounds of IMR 4895 not H 4895. i found this load in a handloaders magazine for a 200 grain round nose (i suspect this is for a jacketed bullet). they only show MAX 36.5gr. @2050. can i use 10 percent less safely for both bullet weights.
for compairison they have H 4895 Min 35gr. @1920 and Max 38.5@ 2110
thanks joe
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Post by wsl49er on Sept 15, 2010 10:39:34 GMT -5
uhjohnson - Don't guess at anything as far as handloads go. IMR 4895 isn't listed as a powder in either of the two older handloading manuals 1929 and 1932 from Lyman but was not necessarily available during those years either. You also need to find the true bore diameter of your rifle, the maximum and minimum dimension. Just saying you have .35 diameter ammunition isn't necessarily what it actually may measure. Older references show the 35 Remington barrel bore at .357 minimum and .359 Maximum. Slug weights all show 200 grains with several 150 grain bullet weight loads for 38spl slugs and something called a Hi-Speed bullet (jacketed). Only powder shown which still exists was 2400 and bullet diameter shown was .358. It would help you to look for an older reloading manual published under the Ideal Handloader title for 1940 or possibly later and look at the powders used. Powders listed in the 1932 Ideal Handbook: No. 2400, No.1204, No.17½ , Lightning, No.80. Powder quantities were mentioned as Maximum so I would be very careful. Lyman Ideal Handbook from 1932 lists Load for a 200 grain Jacketed bullet with No.2400 powder at 24 grains powder weight for 1910 Feet per second. One of the members here mentioned there has been a 10% increase in the power of 2400 over the years and it might do well to start with a lower grain weight of powder. If experimenting with the same powder but heavier or lighter than prescribed bullet weights there are a number of software calculators on line based on the original Homer Powley formula. Original formula is as follows: Divide the old powder charge weight by the weight of the old bullet. Multiply that result by the difference between the old and new bullet weights. Multiply that result by 3/8 (.375). That equals the change in powder weight, either plus or minus, depending on whether the new bullet is lighter or heavier than the old. Logic: Bullet weight increase powder decrease; Bullet weight decrease powder weight increase. I found using Powley's formula handy when working out loads for a 147 grain bullet for my 351wsl (Win 1907) but I would suggest you do a great deal of research and talk to the other 81 owners who fire their rifles on occasion. I bear no responsibility for the posting of this information and it is presented as reference only and is not in any way suggested to be followed by anyone.
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Post by uhjohnson on Sept 16, 2010 13:43:07 GMT -5
thanks
wsl49er
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