Its come to my attention that some folks just don’t really know what the .30 Remington AR is. Let’s see if we can fix that.
1. Its not a .30 Remington. The .30 Remington was introduced in 1906 for the model 8 auto-loader. It will drive a 150 grain bullet to 2350 fps.
2. Its not an American version of the 7.62 x 39 Russian. This cartridge will only push a 150 grain bullet to 2200 fps.
3. It is not based exactly on the .284 Winchester case. The .284 case has a rim diameter of .473 inches just like a .308 Winchester. The .30 AR has a rim diameter of .487 (Best I can measure.) The bodies of both cases do start out at .500 inch. The rim on the .30 AR is rebated but only by .013 inches.
4. It is not a .308 Winchester. A .308 Winchester will push a 150 grain bullet to about 2800 fps from a 24 inch barrel. The .30 AR generates 2600 fps with a 150 grain bullet from a 24 inch barrel in a semi-auto rifle.
5. It will duplicate .300 Savage loads with regards to velocity. The .30 Remington AR operates at a slightly higher pressure.
6. More Ballistics? It will launch a 110 grain grain Barnes Triple Shock at 3000 fps and a 125 grain Nosler Ballistic Tip at 2850 fps from a 22 inch barrel. (Remember, these ballistics are from a semi-auto rifle driven by a gas impingement system. You will see higher velocities from a bolt gun.)
7. It is not a .30 BR or a .308 x 1.5 Barnes. These cartridges are a shortened version of the .308 case. They have a smaller rim, smaller body and less case capacity than a .30 Remington AR.
8. The .30 Remington AR offers the best balance of power / trajectory available from the AR 15 platform.
9. Four factory loads are currently available from Remington; 123 gr. FMC, 125 gr. CoreLokt, 125 gr. AccuTip and a 150 gr. CoreLokt.
10. It is my new favorite cartridge. This is for several reasons. Just consider that with a .30 AR R 15 rifle and a .223 Remington and a rimfire upper you can do just about anything you will need to do with a rifle.
NOTE: Wikipedia is a good source for general firearms and cartridge information but not everything you read there is 100% correct.
Oh, and, another note from Bill Wilson on the .30 Remington AR:
“I’ve settled on my hunting load for my guns that works for me. 150gr Nosler Accubond, 37gr Benchmark, F205 [primer] Very accurate in my guns, a bullet that is a proven performer and Benchmark is super clean burning for suppressor use. Was a hard decision between BM and 8208; both are excellent for this caliber. A little over 30 hogs down now with the .30RAR, only 1 lost due to an inexperienced hunter taking a head on brain shot that didn’t work out.”