Recent content by JMGamesniper19

  1. JMGamesniper19

    7mm-300 PRC

    Update: Official caliber name is the 7mm GARRETT. It is complete. After testing and working through the calibration of the free bore and powder cocktails, we feel like we have the caliber in a great place. What we accomplished: Calibrated freebore and landed at .240. That freebore is optimized...
  2. JMGamesniper19

    7mm-300 PRC

    UPDATE Rifle is done and i have gone through barrel break in and my first ladder. Results so far: All results are with Hornady 175 ELDX bullets, cci 250 primers, and RL 25 powder. Hornady 300 PRC data for 175 eldx states that 83.7 is the max load so I decided to start 5% below and go up. I like...
  3. JMGamesniper19

    PROOF FULL CUSTOM TAC II in 338 Norma Mag

    I have never actually weighed it. It is probably right in that 9lb range as is. Getting 2910 with 285 grain Amax. Could probably get 3k but this is where the rifle likes it.
  4. JMGamesniper19

    PROOF FULL CUSTOM TAC II in 338 Norma Mag

    You are looking at a fully custom PROOF built 338 Norma Mag. I built this rifle a few years ago with the finest parts in mind. It comes complete with: Defiance Deviant Tac action with 20 MOA rail 24 inch PROOF carbon bbl in 9.25 twist. Optimized for 285 to 300 grain bullets Timney elite...
  5. JMGamesniper19

    6.5 builds ...let's see them

    Three 6.5's First one - 6.5 GAP 4s on defiance action, 24" PROOF carbon bbl, McMillan stock, Timney trigger, Khales Scope, and an 84 inch goat! Second one - 6.5 CM on Defiance action, PROOF 8 twist 24" barrel, McMillan stock, Kahles Scope, Timney trigger Bottom one- 6.5 CM on Aero billet...
  6. JMGamesniper19

    7mm/300 Norma Mag

    That tenon diameter is fine. I hve run many overbore calibers with that same thread. BAT Stiller and others thread with that size and 18tpi so imo it runs just fine
  7. JMGamesniper19

    7mm/300 Norma Mag

    Comparison photo of my 7 Norma Improved with the 195 berger next to my 6.5 GAP with a 140 berger. My cocktail is: 26 inch 8 twist PROOF Sendero bbl Case length trimmed to 2.500 86.2 grains Retumbo - CCI 250 primer 195 Berger EOL - .002 jump 3190 FPS at approx 85% case capacity Overbore rifles...
  8. JMGamesniper19

    7mm/300 Norma Mag

    Went with a Proof carbon sendero
  9. JMGamesniper19

    7mm-300 PRC

    I am currently building a 7mm/300 PRC as we speak. Why? I believe the following to be true and will get a chance to pressure test my theory here in about 8-12 weeks :) I am luck to own many LR custom rifles so right off the bat, I am spoiled and admit it but hey MERICA! I want a lighter weight...
  10. JMGamesniper19

    MARKSMANSHIP BASICS - How hard do you hold

    Caffeine is a well documented stimulant. In humans, the half life of the stimulant is 4-6 hours; which means 50% of the drug is out of your system sometime within that timeframe. According to a study by the Univ of Michigan caffeine can increase your hear rate, blood pressure, body temps, blood...
  11. JMGamesniper19

    I am thinking about building a new hunting rifle

    Agree with your opinion on calibers for elk. Yes, a well placed 140 grain bullet our of a 6.5 will do the job, and it has. At the same time, I personally prefer a 175 grain or larger bullet on elk Ran a 270 WSM for some time and it is a great round that hammers critters. Seems like in the new...
  12. JMGamesniper19

    I am thinking about building a new hunting rifle

    I do have experience. IMO it is the best all around 6.5 caliber on the market. Excellent accuracy, velocity, and case capacity, with the ability to run 140 and larger bullets above the 3000 fps threshold....and should get you above 2000 rounds barrel life. Very manageable recoil. Built one last...
  13. JMGamesniper19

    260 ai or 6.5prc

    Agree - the 6.5x284 is falling out of favor for many of the reasons listed. The PRC should get you to 3000 rounds at least. The GAP has shown 2500 with no decrease in accuracy during PRS competitions with GAP saying they have had barrels make it to 3000. The PRC is a modified 6.5 GAP -...
  14. JMGamesniper19

    260 ai or 6.5prc

    Even though the chart says 6.5x284 Norma? 3000 fps is pretty standard for that caliber with 140s. 26" 5r Bartlein 3b/1:8t 57.5 gr Retumbo 2.415 cbto .020" jump 2965 fps with the 140 vld I could probably get another 100 fps out of it but accuracy trumps all. This is consistent with the 6.5 PRC...
  15. JMGamesniper19

    260 ai or 6.5prc

    Good 6.5 Comparison 6.5 GAP not listed
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