This explanation seems to offer a reason why. But I also have been getting higher velocities with lower charges than I would have expected. Sumbro X-Force, 9mm, FMJ, 124 Grain Ammo Newly manufactured by Sumbro in Macedonia, these rounds feature a lead-core FMJ projectile and brass case. 300 Prc Brass 7mm Mauser Ammo 7mm Mauser Ammo.30-06 Ammo 30-06 Ammo, 30 06 Ammo. Sumbro X-Force, 9mm Luger, 124 grain, Full Metal Jacket, Brass, Centerfire Pistol Ammo, 50 Rounds, SM9115 69.9936. 9mm Ammo Bulk 9mm Ammo, 9mm Ammo For Sale. Sumbro X-Force, 9mm Luger, 124 grain, Full Metal Jacket, Brass, Centerfire Pistol Ammo, 50 Rounds, SM9115 69.99 36. Personally, I've had great experience with Starline's 6.5 small primer brass. Sumbro X-Force 9mm Luger 124 grain Full Metal Jacket (FMJ) Brass Casing Centerfire Pistol Ammunition, 50, FMJ. We always recommend that customers start on the low end of load data and carefully work their way up when changing brass manufacturers as not to run into pressure problems. Starline brass has a lower case capacity than Hornady brass due to Starline’s increased thickness at the base, so I knew this was probably most of the problem. consideration, compensation, permission, consent, notification or review. I quickly discovered the load was at maximum in Hornady brass, according to their published reloading data. Day Bowl of Brass 5,000 Round Sumbro X-Force 9mm Luger Gift Certificate. At first, the problem seemed pretty cut and dry. As this is an uncommon issue, the customer was asked to supply his load data so I could do some further examination into what could be causing the shortened case life. The brass had been fired twice and some cases would no longer hold the primer. Recently a customer reached out with pressure concerns in Starline 6mm Creedmoor brass that had been formed from Starline 6.5 Creedmoor cases. These cartridges have been observed to travel at speeds in excess of 1,000 fps. Each cartridge contains a 115gr full metal jacket bullet, which provides for increased muzzle velocities. Does Necking Down Brass Affect Neck Tension? | Rifle, Handgun, and Pistol Brass That said each box of Independence 9mm Luger ammunition contains 50 non-corrosive, brass-cased cartridges.
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