In Iowa we have to hunt with .35 to .50 caliber for deer. Is there anything out there hotter than 35 whelen. With the whelens we have been messing a lot to 500. And seems past that we loose so much velocity the bullet must be tumbling. Groups .75 moa at 500. 700 can’t it a 12” plate. So looking for something more. Is there anymore options ?
.
The STA will shoot a little faster than a .340 Weatherby with same for same bullet weights and has a more appropriate twist rate.
I'm not sure what you mean. If a bullet is spun fast enough to stabilize properly at the start, then its stability due to twist increases with distance.
I think the OP's bullets are having a bad time passing through the trans sonic speed range.
