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Discussion Starter · #1 ·
Stephen...You have mentioned earlier in a post that rate of twist is determined more by bullet length rather than weight. Here is a theoretical question that could have a very valuable answer to myself and others that have Thompson Whisper barrels with a 1 in 10 twist rather than SSK 1 in 8 twist. The data for SSK barrels with thw 1 in 8 is usually for 220 and 240 gr Boat tail bullets with a spitzer point...hence...a very long bullet. A hard cast round-nose or a flat-nose bullet would be considerably shorter without the long ogive on the front and the recessed area in the back for a boat tail, and without a copper jacket it would be even more lead in a shorter length bullet. So...THE QUESTION...Can I stabilize a shorter cast bullet in my 16 inch Whisper using 200, 220, and/or 240 grain bullets at sub-sonic velocities?
If this rain ever stops, I will try some at the range. I guess the proof is in the pudding. I intend to try some experiments with paper targets, and I am assuming that if the bullets are not key-holeing at 50 yds or so, and I have nice clean round holes....then the bullets must be stable......But then...I still need to find a source for 220 and 240 gr. cast bullets for the experiment. Till then, I guess I can try my 200 gr. Billy Bullets.
I would sure appreciate any help you could offer with this experiment. Thanks, Robert
P.S. Please try to keep warm...sure have been seeing some awfull temperatures on your website. Tami says Hi.
 

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Discussion Starter · #4 ·
Thanks Stephen

...just what I wanted to hear. Tami is my girlfriend, she used to live in Montana, and spoke with you when I first met you on-line a few years back, when I was doing research for my Ultra-Mag. At the time...you and Texas Bob were about the only source of info online for loads. Tami used to live in Boseman, and the Big Sky area. I asked her if Big Sky was a name of a town...she just said , You would know where she meant.
 
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