Quote:
Originally Posted by daveinsvaz
I took 6.5 Swede brass, opened the neck to 375. Cut off the neck of a 223 hull. Remove the primer of the 223 hull and drill out primer pocket to almost maximum size. Don't make it a complete cylinder, as you may need a small ledge to assist in driving the 223 brass into the hull. Put modified 223 case in expanded 6.5X55 hull. Resize the 6.5 Swede brass. Use 6.5 TCU reloading data.
I used the same idea on 308 brass to make a poor man's 300 whisper. But you have to add an additional step. Cut the 223 hull off at the extractor grove. It works very well on the old Spanish '93 Mausers you may feel cautious about full 308 loads.
Expect to loose up to 10% of modified brass, if it's more than once fired.
Dave
Sierra Vista, AZ
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Dave, did you anneal the brass before expanding the neck - and why didn't you just shorten the brass at the neck end more for the 308 case?
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