I have shot both the 6.5 TCU and the 7 TCU and can offer this - they are BOTH capable. The versatility "edge" may go to the 7 TCU, but the 6.5 has a lot to offer. Many people will advise that you shoot 140 grain bullets in the 6.5, but I found the best accuracy for the 2 separate barrels I owned with the 129 grain Hornady. This bullet hits hard for its weight, and I never have lost a hit target with it. And, as Steve said - the 6.5 really bucks the wind well. My 6.5 TCU production gun was used in Fort Stockton once against the notorious cross wind, and it bucked it without any windage adjustment ! I cannot say that about my 7 TCU production gun. My advice would be this - use the one that appeals to you the most, because either one will do the job.I currently own a 6.5 TCU Super "14" barrel, and shoot the Hornady 129 Spire Point with 23 gr. of AA-2015. This TC is scoped, and recoil is comfortable. And, it is VERY accurate !
IHMSA # 13794 Joined May, 1980
Match Director Ascension Silhouette Gonzales, LA 1991-2009
Louisiana IHMSA Deputy State Director 1983 - 1985
Louisiana IHMSA State Director 1995 - 2007, 2014 -
IHMSA Region 2 Director 2007 - 2009
Life Member - NRA