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March 31, 2009
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Here is what I’m doing today. I am building a Winchester 284. My chamber will not allow the seated brass to load so I have to turn the necks down.
March 31, 2009
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I shot the 40 EX on June 2nd. I talked with a friend about the issues with cases #2 and #5 that were showing pressure. He is way smarter than me. I did find that the rims on these 2 cases were thicker and have less to no head space.
I also shot one of the cases that I messed up the mouth of the case. I cut off the bad spot and loaded it the same as the other 5. I used this as a fouler to warm up my barrel. It was 61 degrees last time and 68 degrees this time. No matter the powder you use it will get faster when the ambient temperature gets hotter. Some powders are more stable than others. None are perfect. A chronograph will prove that.
All cases were loaded with 31.5 grs. of IMR 4198.
Fouler – 1,473 Fps.
1 – 1,485 Fps.
2 – 1,454 Fps. Did show the extractor marks.
3 – 1,536 Fps.
4 – 1,503 Fps.
5- 1,493 Fps Did show the extractor marks.
I used the wad and toilet paper as before to keep the powder at the primer as best I could. Here is a picture of a case, card and what is left of one piece of toilet paper. After rolling and sliding the TP into the case I cut off the excess. As you can see the card is way smaller in diameter compared to the ID of the case where the powder is and the same for the toilet paper. I am not trying to fill the case, just putting together a column that keeps the powder put.
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