finished it and got to shoot it yesterday. leaves a pretty big hole in the target 
More or less the same size hole as the .30-06, 7.5 French, 8mm Mauser, 7.7 Jap, .303 British, and 7.65 Belgian.

Now, if the holes are not round-ish and instead long and not uniform in shape, then you've got problems. That is called "key-holing" and your bullets are tumbling in the flight, which in turns means you've got problems in the barrel, which in turns means you should stop firing that rifle immediately and get it to a legit gunsmith who can scope the bore.