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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
.20 Cal Berger 55gr, any one using?
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<blockquote data-quote="65WSM" data-source="post: 1296949" data-attributes="member: 9551"><p>Because there is still case room. I am going to try VV N-550 at nearly case capacity with the 55s. That is my next project. At 29.7gr of N-550 I get just 3500 fps and the SD is not as good as the R-17. It is not up to max pressure. </p><p></p><p>There are other IMR 4350 burn rate powders to try as well, the IMR 4451 interests me because it is built in that new ISO 9001 plant near Toronto that belongs to General Dynamics. </p><p></p><p>I coat all of my bullets with HBN so copper fouling is present but probably a tenth as severe as most .20s suffer. I get a trace of blue on the first patch after letting Wipe-out Patch-out sit overnight.</p></blockquote><p></p>
[QUOTE="65WSM, post: 1296949, member: 9551"] Because there is still case room. I am going to try VV N-550 at nearly case capacity with the 55s. That is my next project. At 29.7gr of N-550 I get just 3500 fps and the SD is not as good as the R-17. It is not up to max pressure. There are other IMR 4350 burn rate powders to try as well, the IMR 4451 interests me because it is built in that new ISO 9001 plant near Toronto that belongs to General Dynamics. I coat all of my bullets with HBN so copper fouling is present but probably a tenth as severe as most .20s suffer. I get a trace of blue on the first patch after letting Wipe-out Patch-out sit overnight. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
.20 Cal Berger 55gr, any one using?
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