« Reply #7 on: February 06, 2011, 10:47:04 AM »
Stretched frame! eeek, Does that ever happen?
There are certain calibers to be cautious of. 444 Marlin, 300 Savage and 30-40 Krag are three that I know of as being perported to stretch Contender frames if not downloaded. However I have no first hand experience with those. Some barrel makers chambered Contender barrels for those and others for a time and then most of them stopped as problems were reported.
Staying within certain boundries with the relationship of casehead size to chamber pressure is a must, however other factors such as an oily chamber in any caliber can also contribute to excessive casehead thrust.
Curtis

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Lord, please help me to be half the man my dogs think I am.
Contender in 17 Rem, 22lr, 22k Hornet, 223 Rem, 256 WM, 6TCU, 7TCU, 7-30, 30 Herrett, 300 Whisper, 30-30 AI, 357 mag, 357 Herrett, 375 JDJ, 44 mag, 45/410..... so far.