I bought a Power Swing from a buddy of mine. Pre-drilling layout:

40 x 4 1/4 x 65(pin under ring, cg kicked out)
-Box finish
--P2 hole, 29/32" 3" deep.

My stats are in my profile.

I help coach a summer camp league on Wednesday nights.  The league has 4 pairs, 2 with a sport condition and 2 with a house shot.  The sport shot we've been bowling on is supposed to be Dead Mans Curve(43').  It doesn't seem 43' to me and plays more like Highway to Hell IMO.  I tend to bowl on the patterns between games to get an idea of what the participants are facing.

Anyway, the Power Swing looked pretty okay early.  I had to make sure I kept my hand behind the ball so it would read the oil pattern.  I played them up 8/9 board and had good success.  

Following the league/work at the shop, I practice on Wed nights.  By this time, the lanes had a few games on them and were moving alittle more than earlier in the night.  I moved 3 and 2 right to start my practice session.  The Power Swing read the mid-lane very well and gave me the C300 stand up arc I love so much.  I had no trouble finding a consistent ball motion shot after shot.  After 6 games, I had a low game of 196 and a high game of 247, finishing with total of 1313.  I ended up moving 2-3 boards deeper thru the 6 games and gradually getting adding some axis rotation as a more defined dry area developed.

The Power Swing should fit just below my Momentum Swing(they share the same coverstock).  It is a touch longer than the MS, but certainly more off the spot.  I didn't bring my Total Bedlam, but I'd say it is 3/4 boards weaker.  

Another great addition to my arsenal.  I just love how C300 rolls for my game.
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Proshop Operator
North Bowl Bowling Center
www.northbowlspokane.com