![]() What powder are you using, what casings, and what primers? ONE of those groups will be smaller, hopefully significantly. Shoot them on a target at 100 yards, with the impacts in a black sheet of paper such that you cannot SEE the group forming. But even at 300 yards, my rifles shoot better with the powder at least "quick weighed" to eliminate the high/low spots that the measure/me kicks out. At Long Range, it better be closer than that. Or don't, if you feel like your powder measurement method is pretty good. Seat bullets with a good seating die (Forster BR, Redding Match with slding sleeve). some graphite left in there is a good thing, and some have even lightly included a little lube. Size the neck to generate 0.002" tension. FL Size the brass to -0.003" from fired dimension. Consider weight sorting brass, if you're gonna be beyond 3-400 yards. Uniforming flash holes is fine, but I've shot 3/8" with Lake City from the bag. Squaring pockets is fine, but not essential. Seat primers -0.003-4" under the case head. make sure the primers are flat, but not cratering or mushroomed. Load at something-reasonable-powder-charge. Whose barrel do you have, what twist, what chamber, how many rounds on it? Is the rifle braked? What muzzle device do you have, if any? Unless you have another reason to go heavier, like suppressor, your closest to 5 ounce is ideal for rifle length, and your 3 oz for carbines. Your springs that are 12 3/4 in are for the rifle lengthĪnd carbines are 10 1/2. Hence why people like to recommend the H and sometimes H2 buffers. So going back to what I said before about barrel manufactures, a lot of these barrels from full assembled uppers are usually over gassed for reliability purposes. ![]() While you CAN use a really light spring and buffer for short stroking or vice versa for over gassed, it doesn’t really fix the problem, and again, might fix the intial problem, just to run into poor timing and dwell of the bolt cycle. Often because the manufacture of the barrel made to big a hole for gas port. ![]() ![]() If you are under or over gassed, are using a oem buffer and spring, then you have a gas problem. The concept of tuning the buffer and spring if you have a quality barrel that is ported properly, is timing. ![]()
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