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Smokin 250:


A couple of posts here need correction/clarification..


While the maximum case length on a 22/250 is 1.912, the "trim-to" length is 1.902; I usually trim mine to around 1.905- 1.910 range.


The bullet typically should NOT be seated on the lands for best accuracy; one may encounter pressure spikes when doing that, especially with a maximum load/55 grain bullet in the 22/250.


Instead, start seating in the range of .010 off the lands (5 cartridges) and load 5 more cartridges at .015 off, and load 5 more at .020 off the lands.  See which ones group the best. You may wish to measure the COAL of those factory rounds that grouped so well (if you didn't shoot them up already) and duplicate that dame seating depth with the same bullet in your reloads.


Your load of 36 gr. of IMR 4064 sounds a bit stiff to me w/ a 55 gr. bullet; check your manual on that but you may have better results starting at 33 grains to 34.5 grains.


There are a lot of good powders for the 250 (IMR 4064, IMR 4895, Ramshot Big Game as noted, and AA 2230), but keep working with the omes you have.


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