175 MK's...1-10" or 1-12"?

Re: 175 MK\'s...1-10" or 1-12"?

I have a question concening twist also. I have a 300 RUM with a Kreiger cut rifled barrel, it has a 1 in 13 twist and is 28" long. I mainly shoot 165gr bullets around 3400fps. I have tried 190 SMK's at 3300fps shooting 8.5" 5 shot groups at 1000 yds. The temp. was 60 degrees and approx. 40 percent humidity, elevation is 2200 ft. I probably won't shoot at any colder temps as I live in S.E. Arizona but I could be shooting at much higher temps, do you fore see any problems? Thank you for your reply
 
Re: 175 MK\'s...1-10" or 1-12"?

S1,
Thanks for the info and the quick response.
1000 yds. will problably be my max distance with this barrel.Once I get better at shooting at 1000 yds I will need a new 1 in 10 twist, 32" tube so I can shoot the 240's.
 
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