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  1. Hjalkarsson

    breaking in new rings without ammo

    pffft. you both beat me to it.
  2. Hjalkarsson

    breaking in new rings without ammo

    hey man, I don't care what you say. you could tell me 1+1=2 and I'm not going to listen. next!
  3. Hjalkarsson

    breaking in new rings without ammo

    LOL magnets. yeah okay dude,. next!
  4. Hjalkarsson

    breaking in new rings without ammo

    explain this.
  5. Hjalkarsson

    breaking in new rings without ammo

    nope, it's lubed inside and out. didn't want it to rust.
  6. Hjalkarsson

    breaking in new rings without ammo

    I have had 3 brand new BCG's to break in. 2 were Toolcraft and 1 was Del-ton. they all did the same thing. run very sluggish for 50 rounds (probably would not lock back on empty mag), loose after 100 rounds, normal after 150 rounds. so today I called 4 gun shops and asked about this. all 4...
  7. Hjalkarsson

    breaking in new rings without ammo

    ignored
  8. Hjalkarsson

    Headspace-AR 15

    that's nice. you could be Eugene Stoner himself and why should I listen to you when you have your panties all in a wad?
  9. Hjalkarsson

    Headspace-AR 15

    those were my personal notes as to the best understanding I could get. if something is wrong I would like to get it straightened out, because the purpose is to have the correct working knowledge. no, I don't have an indication which gauge manufacturers fudge the description of their gauges. I...
  10. Hjalkarsson

    breaking in new rings without ammo

    when you have a brand new BCG, it runs extremely sluggish for the first 50 rounds. gets up to normal speed after 100 rounds. fully broken in after 150 rounds. I did that with the first brand new BCG I got, but with the second one I realized that ammo is hard to come by. so instead I worked the...
  11. Hjalkarsson

    Under gassed AR, what can i do?

    let's summarize the possible causes. 1. excessive fouling/dirt/sand. (needs cleaned) 2. some internal part loose and dragging, slowing down the action. 3. buffer too heavy and/or spring too stiff. 4. weak ammo. 5. worn gas rings. 6. new gas rings. not broken in yet. 7. loose gas block 8. loose...
  12. Hjalkarsson

    Headspace-AR 15

    usually, the cause of excesive headspace is when the gun has been shot enough times that the lugs on the barrel extension stretch and the lugs on the bolt compress. for that reason, it's generally OK to use a new bolt with a new barrel. used bolt on a new barrel, or new bolt on a used barrel...
  13. Hjalkarsson

    Under gassed AR, what can i do?

    I would have to agree that you should check all the other possibilities first before you ream the gas port. should be a last resort. there are SO many overgassed uppers, and pistol uppers are the worst for overgassing, it is extremely highly unlikely that you have an undergassed gas port. I'd...
  14. Hjalkarsson

    Converting Group Sizes

    so after you miss a few times, it's physically impossible to hit a bullseye.
  15. Hjalkarsson

    What's a shot group?

    you have a sampling of values. you can't use that sample to predict what another such sampling WILL BE. that is, you can't be 100.000% sure. but, you can use the average and standard deviation, to figure out what is the most likely distribution, at a certain degree of certainty. that's called...
  16. Hjalkarsson

    What's a shot group?

    5 groups of 5 shots implies different conditions between groups. distance, heat, time, built-up fouling, wind, sun, birds chirping, something. if there is no difference whatsoever then they should be considered all of the same group. statistically, for a sampling of anything, three gives you a...
  17. Hjalkarsson

    Help with 100 yard target

    I meant if everyone is at the firing line shooting at targets 100 yards away, and he starts walking up to the target.... ahh never mind haha
  18. Hjalkarsson

    Help with 100 yard target

    I reeeeeeally don't think the RSO would like that. seriously, try a peep sight. it changes how your eye works. almost like a magnifying lens. I think they make some with screw-in aperatures so you can try different ones. if a regular aperature won't do it try smaller and smaller. the down side...
  19. Hjalkarsson

    New partial AR-15 build ... not sure where it's heading

    I'd sell it and put the money towards a TP9
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