reloaderralph
Member
- Joined
- May 24, 2010
- Messages
- 5
The .264 Winchester Magnum has a reputation of quick barrel burn out and rapid throat errosion. Speer reloading manuals 1 thru 12 showed the 6.5 bullets having .263" diameter. The bullets actually measured .263.5" diameter; and were "easier" on barrels when loaded at or near maximum pressure. Speer manual 13 shows their bullets as now being .264" diameter. I measured the diameter of a speer 140 gr. Hot-Cor bullet stock No. 1441 and found that they now measure a true .264" diameter. Why has Speer now decided after nearly 40 years to increase the bullet diameter size of a hot rod cartridge with an already finicky reputation; thus, possibly increasing pressures, barrel fouling and velocity loss?