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AR15.COM
3/26/2015 10:55:29 PM EDT
I do not have a way to hand load at present, but I am working on it. Having said that, I need some help choosing a load. I have a TC Dimension that I am working with. It comes with a 22" 5R rifling with a 1:12 twist rate. What SHOULD this barrel shoot best? This gun has factory MOA guarantee, but I feel it is far more capable, especially so with the work I will be doing to the bolt face and trigger. Thanks in advance.
3/27/2015 10:09:38 AM EDT
[#1]
168 or 175s  FGMM will probably work great.
3/27/2015 10:11:19 AM EDT
[#2]
175gr is going to be about the limit for 1:12.

I shoot mostly 168s albeit through a 1:10.

If I had to pick one, I'd go with 168gr match in a 1:12.
3/27/2015 12:58:27 PM EDT
[#3]
175 smks are well into the fully stabilized zone in a 12 twist, even my 185 otms are in my 12 twist 20".
4/10/2015 7:23:14 PM EDT
[#4]
For that length of barrel, try some AA2520 behind those SMK 175s. You'll get bored shooting the "x" ring.