Bob Nelson 35Whelen
AH ambassador
- Joined
- Oct 28, 2018
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- 11,063
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- Wyong new south Wales Australia
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- Hunted
- Australia
@C.W . RichterI agree that the 100 gr pills will absolutely do the job on Coues. My 257 AI shoots 100 gr 3,450 fps and 115 gr 3,250 fps (it's picky) and the 100 gr deer go straight down as their dinner is interrupted, while the 115s kill em no problem after running 30 yds. I'm certain it's a combo of the lower SD bullet setting up quicker (doing more damage) and the high velocity imparting more E and damage. I like Nos PTs for terminal performance under 400-450 yds. TTSXs are more than fine, too, and will perform beyond 450. Also less wind drift w/ the 100s because the V is so much higher in my particular gun/load. The TTSX will also penetrate better downrange. With coues, whatever's most accurate in your gun is the way to go...My experience with accubonds is they tend to favor high velocity for proper expansion. And, I'm talking 200+ lb deer. The 100s do the job in .25. Used to use 115-117s in a Wby for the same effect (plus bbl wear!)
They are impressive velocities out of your 257AI.
What powder are you using.
I was using H4831SC in my 25 and switched to Hodgdon Superformance didn't that give it a lifting performance with all bullet weights.
Bob