375 diameter, 185 grain Controlled Fracturing Bullets (50 count) 364 diameter, 95 grain Xtreme Penetrator Bullets (50 count) 357 diameter, 140 grain Xtreme Penetrator Bullets (50 count) 357 diameter, 100 grain Xtreme Defense Bullets (50 count) 357 diameter, 105 grain Controlled Fracturing Bullets (50 count) 355 diameter, 105 grain Controlled Fracturing Bullets (50 count) 355 diameter, 90 grain Xtreme Penetrator Bullets (50 count) 355 diameter, 75 grain Controlled Fracturing Bullets (50 count) 338 caliber, 232 grain Controlled Fracturing Bullets 311 diameter, 123 grain Controlled Chaos Bullets (50 count) 308 diameter, 85 grain Xtreme Cavitator Bullets (50 count) 308 diameter, 194 grain Maximum Expansion Bullets (50 count) 308 diameter, 175 grain Controlled Chaos Bullets (50 count) 308 caliber, 168 grain Controlled Fracturing Bullets 308 caliber, 176 grain Controlled Fracturing Lead-Free Bullets 308 caliber, 78 grain Close Quarters Bullets 264 caliber, 122 grain Controlled Chaos Lead-Free Bullets 243 caliber, 62 grain Controlled Chaos Lead-Free Bullets 224 diameter, 62 grain Controlled Chaos Bullets (50 count) 308 diameter, 152 grain Controlled Chaos Bullets (50 count) 400 caliber, 140 grain Xtreme Penetrator Lead-Free Bullets 452 diameter, 300 grain Wide Flat Nose Bullets (50 count) 284 diameter, 142 grain Controlled Chaos Bullets (50 count) 224 diameter, 45 grain Controlled Chaos Bullets (50 count) 224 diameter, 55 grain Controlled Chaos Bullets (50 count) 311 diameter, 50 grain Xtreme Cavitator Bullets (50 count) 243 diameter, 85 grain Controlled Chaos Bullets (50 count) 400 diameter, 150 grain Xtreme Defense Bullets (50 count) 400 caliber, 100 grain Xtreme Defense Lead-Free Bullets Tip: You can click on any column header to sort by that column. Watch for any signs of excessive pressure (cartridge case expansion, difficult extraction, flattened or pierced primers, unusual recoil), and immediately STOP shooting if any high-pressure signs are witnessed. Variation from the published loading length can and will create dangerous pressures. Upon working up the load to higher pressures, never exceed the published recommended maximum charge weight. Always start a load development with the recommended starting propellant charge. It is incumbent upon the reloader to progress in a safe manner. We have provided recommending starting charges, which should be safe in every modern, correctly manufactured, and maintained firearm of the appropriate caliber. All our loading data is intended solely for use in modern firearms. We make no warranty of merchantability or fitness on any data given for a particular use. One must observe all possible safety precautions and practices in accordance with proper handling of any explosive. Now for the BAD.WARNING: The task of reloading center fire metallic cartridges should only be undertaken by someone familiar with reloading procedures. The Berry bullets were loaded with 28.5gr of LilGun (1712fps & 27 E. The only thing I have to compare this load to is the first loading of 350gr Berry bullets (that has swipes). The other load was 27.0gr of LilGun with the 350gr RNSP Hornady bullet (1623fps & 38 E. Both of these loads were with my 355gr H&G bullets. My second load today was 2gr less and cycling is still good and the the primers look much better. My first lead bullets load didn't have the swipe problem, but the primers were flatter than I like and the velocity was almost 1500fps which is about the limit (for me) for non-gas checked lead bullets. Also, due the tight case in the chamber, the momentum of the BCG moving rearward is retarded slightly, thus causing short-stroking. when the bolt turns to unlock, the case turns also. Swipes mean the pressure is too high in the chamber when the bolt is trying to extract the case. The two gas systems for the 458S are carbine and mid-length, as opposed to 300 BLK which are pistol and carbine gas systems. I got these loads off the Internet and I am now thinking the loads were for mid-length gas systems. I was getting ejector swipes and sometimes getting slight extractor rim bends on the brass, not to mention pretty flat primers. I have determined that my first shot at loads (with different bullets) for the 458S were too hot. Still have a few hicups now and then, but I think it is my loads and not the upper. My RRA 458S upper is cycling much better after 3 range trips. Now really any ugly when is comes to the 458 SOCOM (unless you are receiving one of their BIG OLE bullets ), but I do have some good and bad news from mine.
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