Rather-B-Huntin

I posted this question in the BEginners area before I found this one...... A buddy is offering me what seems to be a great deal on a nearly new Open gun chambered in .40. The gun was built last year by Canyon Creek Custom. My friend has a little over $2,800.00 invested, and is willing to sell for $1,600.00 The gun is STI through and through (standard frame, slide, trubor barrel, and internals), and also includes four 140mm mags. Total round count is around 300 (nearly new and not close to broken in yet). My question is: Should I take this seemingly great deal, or pass and save up for a gun in .38?? Am I putting too much limit on my ability to be competitive in Open class with this gun (I think the most rounds I can stuff in a .40 is 24 with a 170mm mag as opposed to 28 in a .38 big stick)?????? All input pro or con appreciated!!

Got a question for you Open class gunners out there......... I primarily shoot Limited/L10, and often in Production. I've recently been courting the idea of breaking into Open, but have had a bear of a time deciding what gun to start with. Finances are playing a big part in helping me make the decision (I really can't afford much at this time). Recently, a shooting buddy who is being forced to cut way back on his shooting schedule has offered me what seems like a very sweet deal on his Open gun. The gun was built last year by a reputable gunsmith on a standard STI frame, STI slide, STI Trubor barrel, with STI internals. Total round count for this gun is currently around 300 (nearly new). He has invested a tad over $2,800.00 in the piece, and is willing to let it go with four STI 140mm mags for just $1,600.00. The only kicker to the deal as it would seem is that he built the gun in .40 S&W?? He advised he made that choice because he was already set up to load for .40 for his Limited gun and didn't want to have to switch caliber conversions on his Dillon SDB press. Now that you have the history, here is my question that I hope some of you hardcore Open class shooters can help me answer: Should I buy this gun to shoot in Open class? Am I putting too much of a restriction on my ability to be competitive with the lower magazine capacity of the .40 as opposed to the 9's and .38's??? With the low amount I'd have to pay for the gun, I could have a new slide/barrel/comp fitted in .38 for under $1k, leaving me with a total of around $2,500.00 in a custom built gun (still at least $1,000.00 under the asking price of most custom guns). My primary interest will remain in Limited/L10. When/if I go to a major match, one of those will be the class I will shoot in. SO, should I buy this gun, or pass it over and save another couple grand and just get a .38 from the get-go??? All info and input very much appreciated!!