50 caliber stainless Thunderhawk

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Just a FYI. The Precision Rifle 45x357s are not the same as the MMP 45x357 but MMP does make them. The PR version is longer and well suited to a 180gr bullet but i would highly recommend running a .357 bullet through a 9mm/.355 sizing die. They fit the sabot much better.
 
I've tried the blue MMP's. Very tight fit, even in the QLA, with .357s. Shot some 147 grain 9mm XTP's. Showed promise.
Having abstained from breechloaders, my RCBS press needs something to do...
 

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