Perry,
Glad to see you've sort of put them to good use already.
I've just had the throat on my 416 Ruger lengthened out to 0.375" long, about 0.190" longer than it was.
Using my same cast bullet load, it actually shot a lot better than it did before, seemed to be more consistently grouping them together.
Might get to the range this weekend to try some more.
So the extra jump didn't hurt my 416, but as we all know, every rifle is an individual.
I'd like to think it shouldn't worry it too much at all.

Keep us posted after Allan throats it out a bit more.

Regards,
David.