PDP Features video "Stepped Chamber" explains the benefits of the stepped chamber.
Walther’s innovative stepped chamber affords you more performance and dependability from any ammunition. This unique design combines advantages to give you the reliability of a duty gun by allowing your gun to operate cleaner over a high round count while still maintaining match-grade accuracy. The stepped chamber also produces a higher velocity from any ammunition when compared to the competition, resulting in increased effectiveness. The Walther Step Chamber is READY for better performance with any ammo and will last you longer than a traditional chamber.
Compared to its competitors with the same length barrel you should see about 50fps more with a stepped chamber.
Link to PDP: https://waltherarms.com/pdp/
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