I'm old and my geometry is long gone. Weird question I cannot answer.
For sake of argument lets assume a rifle will put every round though the same hole......
What amount of movement at the bench would cause 1/4" impact movement at 100 yards? 1/16", 1/8"??
I've long forgotten how to calculate...
My experience with over gassed was the bcg was moving rearward so soon the extractor was almost tearing the rim off the case. It would get the occasional feed the next round, before the first was ejected. Installed an AGB and a heavier buffer and it was much better with little to no marks on the...
Best group yet with my XRAY51. Alpha brass, Federal small rifle, 168SMK, 40.0gr. IMR4895, 1.616 shoulder, 2.205 ogive. Just 3 rounds at 100 yards, but I'm happy. Mike said to try the Federal T308T... I'll see what they do.
I have a Kreiger 224 MTU profile barrel blank.
Anyone recommend a good gunsmith or company that can turn it into an AR15 20" barrel? Install the barrel extension, gas port, etc. Thanks in advance.
Tangent Theta 5-25x56 Gen2XR reticle, excellent condition, caps, manual, box. It is fantastic, but I'm hooked on the floating center dot reticles and I can't afford to get the Gen3XR..... $3300.00 shipped in CONUS. Mount not included. PP friends or Zelle. No trades unless it's a super like new...
Still doing 3 shot load development with the XRAY-51. Best group so far... 0.095" Alpha srp, CCI 450, 41.0 Varget, 168 SMK, 2.180 ogive (about 40 thou. off).