There have been many rimless centerfire cartridges chambered in the Contender, but no high pressure/large diameter cases regardless of rim type. This is because the Contender frame is not strong enough for the back thrust that cartridges like the .25-06 produce. But lower pressure cartridges like the .35 Remington or smaller diameter higher pressure cartridges like the 6.8 SPC are chambered. Others include (or included) the 6.5TCU, 7TCU, .222, .300 Whisper, 10mm Auto, .45 Winchester Magnum, .45 ACP.....
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