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Post by HMC710 on Sept 10, 2010 5:06:56 GMT -5
Got the tube cut and machined, now to bend and fit it......
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Post by HMC710 on Sept 10, 2010 17:09:19 GMT -5
..... and assembled. Hopefully will test tomorrow.....
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Post by HMC710 on Sept 14, 2010 6:04:18 GMT -5
Got a chance to hit the range with the 16" Wisp, too bad my Chrony didn't like the light conditions Only worked on the Sierra 125gr JSP. first (and only) good reading I got was 1915 fps using 12.8gr of LilGun. Got out the 9mm to check the unit and it read just fine, 990 - 1020. Went back to the wisp and it wouldn't pick up the shot at all or gave me an Err2, back screen didn't pick up the shot. But, did give me a chance to get out and shoot ;D and check on operation. Ran a different gas port and the hi-vel stuff did fine, subs would cycle but not lock back. Will look into installing the adjuster on this block. Tried the new baubles and definately not stabalized. Would love to see a slow motion of that trajectory tho.....
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Post by love2shoot on Sept 14, 2010 17:20:17 GMT -5
looking at the miller formula, your little bauble will need about 3250 fps with a 1 in 10 twist barrel. but a 1 in 8 would stabalize it in subsonic range.
just playing around with the formula using 1050 fps since that will give a large swing of temp range in which it will still be subsonic. I am also setting it for 1 in 10 twist barrel since that is what I have......155 and a length of 1.31 will stabalize
the Sierra 220grn HPBT projectiles are only 1.483" in length....this formula is fun to play with......
I have not tried Lil' Gun on the lighter projectiles.....
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Post by HMC710 on Sept 16, 2010 5:58:13 GMT -5
Interesting indeed! My HP versions are much shorter..... and lighter...... Going to open up the Wisp gas port a bit today....
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Post by HMC710 on Sept 20, 2010 18:09:08 GMT -5
Mr. Miller says the 148 gr HP should be ok..... Opened gas port a bit to run the subs a bit better. 180 and 200's were fine, under 150 needed some help. 125 SP running 1915, 1908, 1913, 1910, 1911. Chrony must have liked the sunny day I don't think I have ever had a 7 point spread, ever....
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