I use 3.0 gr HP 38/W 231 with Missouri Bullets 95 gr LRN.

Take your barrel out and do the drop in "plunk" test with some inert rounds to see if the seat correctly and fall out when turning the barrel upside down. To check for OAL. Start with Max length as there is not a lot of room to mess with and pressure will increase.

Be careful when resizing, if the case is not perfectly aligned you will crush more than you load. The case walls are very thin.

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