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My most memorable use of IMR-3031 took place twenty years in the past After i made a decision to take a look at two rifles to destruction, noting the warning indications since the pressures mounted.
John from MD mentioned: I take advantage of ww748 as my base load for .223 55gn bullets. in no way had a difficulty with it other than that it leaks across the powder evaluate. So does H110/WW296 so I maintain the shop vac close by. click on to increase...
there are actually a good number of people, mostly very long time shooters, who started off with 3031 quite a while in the past (when options had been more restricted and Ball C was noted for dirty burning and temperature sensitive) with what now could be slow twist barrels for lighter bullets.
before, I mentioned how many IMR-3031 loads are located in the assorted editions of Cartridges in the globe
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even so, my handloading mentor, John Redmon, who essentially received me commenced in handloading the 223 Rem. a few years back very long in advance of I'd any curiosity in AR-15s, has reams of 223 Rem. data showing how various the bulletseating depth enhanced precision in his bolt actions. I’ve viewed a great deal of his targets that further more validate the fact that accuracy in bolt actions could be enhanced In this particular way.
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that is a compressed billed (everything about 25gr with 3031 inside a 223 Rem scenario will probably be a compressed demand) and desires to have a slight crimp in it. I have shot these loads crimped and un-crimped plus the crimped shot much better than the un-crimped for a few purpose.
depending upon the stress curve generated when firing a round, an AR may or may not perform satisfactorily.
Dupont 17½ was essentially an more mature powder, DuPont 16, with tin included towards the method. The addition of tin was intended to decrease fouling from cupronickel jacketed bullets at higher velocity, and while it did accomplish this, Additionally, it still left gummy powder fouling.
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