Kelbly Small Ad 1 11/2/09 11:07 AM Page 1
failure of almost any gun. That is not the point here. The point here is that the fi ring of enough loads that gener- ate excessive pressure that does not immediately harm the gun eventually can lead to catastrophic failure. Bob Bell (former editor of Hand-
loader’s Digest) experienced just such a catastrophic failure when he was a teen- ager. He had a small-ring Mauser that had been converted into a fi ne custom 22-250. His load was the long-time stan- dard for that (then) wildcat chambering — 38.0 grains of H380 (hence the name) behind a 55-grain bullet. One Saturday (while Bell’s parents
were out of town), as was his custom, he opened his bedroom window and set up to kill crows. He lined up on a likely target and squeezed the trigger. Some unknown time later, Bell
awakened, lying on the fl oor, seeing stars, thoroughly disoriented, and blankly staring at the ceiling. Various remains of the receiver ring were em- bedded in various places around his bedroom and well into his hide. Having ones head only inches from an explod- ing hand grenade is not conducive to
Introducing Kelbly’s Tactical Rifles. bringing benchrest precision to the tactical market. With loads of options to choose from, and pricing that shatters the competitors.
Introducing the first hunting and tactical scopes with 10 times power ratio on a variable scope. March 1x-10x-24mm and 2.5x-25x-42mm. 1/4” clicks and 25 MOA per revolution. All lenses are glued in scopes with no O rings on lenses to hold point of aim.
continued good health! Bell recovered to lead a full, active life but the results easily could have been otherwise. So, what happened? On every
shot, his standard load stressed that receiver far in excess of what it had been proofed for and far in excess of what was safe — in the long run. After several thousand such stress and strain cycles, the receiver simply disintegrated. This happened because stressing always weakens steel, until (after enough stress and strain cycles) it will respond not with normal strain (elastic stretching)
but with brittle failure. When it does fail in this manner, all the energy stored in the steel in response to the applied stress before failure occurs instantly is converted into explosive energy. All properly built guns are de-
signed so that when normal loads are used in that gun, many millions of stress and strain cycles are required before catastrophic failure occurs — in fact, so many millions of rounds would be required that such failure could never occur under any feasible circumstance. However, in all instances, the greater the
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