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Rifles, Reloading, Optics, Equipment
Reloading
QUICK LOAD VELOCITIES?
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<blockquote data-quote="Mikecr" data-source="post: 1953170" data-attributes="member: 1521"><p>About 12yrs ago I sat down with cartridge design software, ballistic software, a blank reamer print, and QuickLoad, with intent to build the most efficient 26cal with 140gr bullets. Running 'what-is' with everything I came to the capacity needed with a wildcat very close to 260AI, but able to handle more pressure. A 26wssm Imp.</p><p>Ordered a reamer set, barrels, an action & stock and had a 16.5lb BR gun built.</p><p></p><p>The load predictions from Quickload matched up with similar cal/capacity results as posted at ReloadersNest at the time, so I was confident enough to buy all the brass, powder, primers, and bullets needed for several barrel lives, which I also knew, right up front.</p><p></p><p>When the gun was finally finished, I setup my Oehler with 20' screen spacing and worked up safely. New brass was ~10fps off (slower) than predicted, fire-formed was dead nuts on. Possibly more accurate than my chrono.</p><p>I was blown away by that, as I know there is some luck to it. I had to guess on a couple things (like weighting factor) so I would have been impressed enough within ~50fps of predicted. As long as pressures were ok.</p><p>Another unbelievable: 3 barrels later, same 80 cases for all 3, the gun still shoots within an 8fps ES of originally predicted. The same make barrels(Border) had been finished together, and I've used same lot of every component.</p><p>It couldn't have gone better.</p></blockquote><p></p>
[QUOTE="Mikecr, post: 1953170, member: 1521"] About 12yrs ago I sat down with cartridge design software, ballistic software, a blank reamer print, and QuickLoad, with intent to build the most efficient 26cal with 140gr bullets. Running 'what-is' with everything I came to the capacity needed with a wildcat very close to 260AI, but able to handle more pressure. A 26wssm Imp. Ordered a reamer set, barrels, an action & stock and had a 16.5lb BR gun built. The load predictions from Quickload matched up with similar cal/capacity results as posted at ReloadersNest at the time, so I was confident enough to buy all the brass, powder, primers, and bullets needed for several barrel lives, which I also knew, right up front. When the gun was finally finished, I setup my Oehler with 20' screen spacing and worked up safely. New brass was ~10fps off (slower) than predicted, fire-formed was dead nuts on. Possibly more accurate than my chrono. I was blown away by that, as I know there is some luck to it. I had to guess on a couple things (like weighting factor) so I would have been impressed enough within ~50fps of predicted. As long as pressures were ok. Another unbelievable: 3 barrels later, same 80 cases for all 3, the gun still shoots within an 8fps ES of originally predicted. The same make barrels(Border) had been finished together, and I've used same lot of every component. It couldn't have gone better. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
QUICK LOAD VELOCITIES?
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