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  1. carlos_hathcock

    Zero-M Sonic Blaster

    I would have wanted this as a kid. Probably still do.
  2. carlos_hathcock

    FX Impact M3-lowered reg for accuracy

    Shooting H&N 25 gr. HP slug II's .218 dia., I lowered the 2nd reg from 119 to 111 so max velocity was nearer desired velocity. Even in today's wind it was obvious accuracy was improved and ES down to 3-4 FPS with velocity at 995. I didn't take pictures but figure minute of squirrel head...
  3. carlos_hathcock

    Alternative to tripod?

    Check out this as an alternative to a tripod shooting setup. More mobile anyway. Shooting offhand I wave like a flag in the breeze so any kind of a rest like table, post, tree, seems mandatory. The video attached seems to show it useful for carrying weight but what about enhancing accuracy? 5000...
  4. carlos_hathcock

    FX Testing different slug diameters…same tune?

    All right, I can already hear the shouting from the back row that your mileage IS GUARANTEED TO DEFINITELY vary because your rifle is like the fingerprint of some enigmatic person you've never met, but here goes. Please put down the pitchforks, torches, hot tar & feathers. When testing...
  5. carlos_hathcock

    Are A.U.O. moderators available?

    Haven’t found anything on the web or on forums where are the A.U.O. moderator is sold. Any ideas?
  6. carlos_hathcock

    Impact M3 back on track

    Sometime back I posted 5 MOA & better groups at 100 yards that I shot one day. Being a tinkerer I couldn't stop there and had to try different projectiles, different weights and diameters, settings, ad nauseam. After that came multiple trips to the range, each ended by being less hopeful than...
  7. carlos_hathcock

    Patchworm barbs

    I’m on my second Patchworm string and like the first this one has developed barbs. I’m worried about these cutting up the O-ring in the breach. I haven’t seen any velocity or other issues so far or had to change an O-ring. Anyone else have problems with this or concerned about it?
  8. carlos_hathcock

    Different reg setting, same FPS, wildly different results?

    Had my Impact M3 shooting Nielsen 24.8 OK and Zan 25.5 really well at 110 bar 2nd reg. Changed reg to 120 bar, adjusted hammer for same FPS and Zan’s were terrible and Nielsen’s better. Slugs that were good at 995 FPS now wanted 950 FPS with the higher reg. So the upshot of all this is it seems...
  9. carlos_hathcock

    PCP tuning record form

    In tuning my Impact M3 I realized there was too much to test and information to keep track of, so made the attached form to fill out at the range as I shoot. I hang my targets and shoot methodically, assigning a number to each target. At the end of the day I'll go back and measure the group size...