Midway got in some .224 Speer 70gr bullets last week so I ordered couple hundred pieces and today I went and tried to buy some Alliant power pro varmint powder (yeah right) finding 223 reloading components right now is dang near impossible so I have some IMR powder on hand so some of you guys that loads 223 70gr bullets please give me some advice on powder......I have IMR 3031 / IMR 4064 / IMR 4895 / IMR 4831 which of those is my best powder for a hunting load 70gr bullet? I'm not really concerned about speed just accuracy and safe for 18" barrel from from BCA.