Dober,
Not to derail the discussion to much but how much have you used the 139g Horn out of the bigger 7's? Is it stout enough to use on mulies out of a 7mm RM? Or would the 154 be a better choice?
Not Dober but last year I shot a mule deer as he was getting away, with a very hard quartering away shot with a 139 Horn out of a 7mm-08. Impact was probably about 2600 at 110 yards I figure. It entered at the very front edge of his back left quarter (left most of it inedible) and some of the bullet exited the right side of his neck (think it was just a fragment).
The bullet showed to have penetrating abilities but did shoot up quite a bit of meat at intermediate velocity. I can only imagine the 154 grainer being more of a better thing.
