April 14, 2011
Thank you for the info. With the possible exception of the U.S. Govt., I believe that by the early 1930’s domestic manufacturers of ammunition had switched to non corrosive priming. Remington had introduced their "Kleanbore" priming a bit earlier in 1925.
The SHBP (Solid Head Button Pocket) cases used on cartridges generating less than 25,000 psi** were changed to the current solid head cases by the early 1950’s. Since most sporting cartridges like the .30-30, .30-06, etc. developed higher pressures, the cases were always of the solid head type.
Thank you for the info on your Rem-Umc cases. Just goes to show that different lots of brass = different results. I have one box of Rem-Umc .30-30 ammunition that dates to the late 1920’s and the case necks show signs of having been annealed which would indicate that they wanted to be sure of cartridge longevity ……….
April 23, 2012
for info and pics, Always interesting posts
I am surprised that balloon heads in 32 -20 , 38 -40 , and 44-40 were manufactured till the early 50’s Im assuming that the HV offerings,advertised decades earlier, in these Cals. were stronger solid head , or surely there would be problems with case head separations ?
December 30, 2011
With the sticker over the label I’m guessing this would be what an early REM-UMC non-corrosive priming box would look like? I’ve had this one awhile.
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April 14, 2011
The cartridges headstamped with W.H.V. (Win) and H.V. (Rem.) that I have dissected used the SHBP cases. These were solid head cases of the balloon type (1 piece construction) . The early type of balloon head cases were folded (2 piece construction) and were weaker.
Thank you for the pic. Very interesting. They likely had boxes in stock when they started using the new "Kleanbore" primers so used a sticky label until new boxes were made with "Kleanbore" printed on them.
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