The 25 RPM follows the same design philosophy that made the 6.5 and 338 RPM such a standout performer. RPM stands for rebated precision magnum, a modern case design built to maximize performance in the lightweight Mark V 6 lug action. The idea is simple, create a magnum level cartridge that fits in a lighter, more compact rifle without sacrificing velocity or downrange capability. Barnes LRX The Long-Range X Bullet (LRX) line is designed after the best-selling Tipped Triple-Shock X Bullet, the LRX bullet design increases Ballistic Coefficient values by increasing ogive and boat tail lengths to improve the bullets' long-range ballistic performance. An all copper bullet with polymer tip that initiates expansion, causing the nose cavity to open instantly on contact doubling the bullet's original diameter while creating four razor sharp cutting petals that wreak extensive internal damage and produce massive wound channels.