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I am not an expert, although I have learned boolit size is the important variable concerning leading. Do you know what your bore diameter is as opposed to your boolit diameter? If your boolit is too...

Then 3 inches of target coverage at 100 yds is what you have, same math applies as mentioned by the above posters.

3 MOA seems a bit odd unless you are refering to a red dot sight, if this is the case 3 moa means it will cover 3 inches of your target at 100 yards.

Thank you sir for the response, I will lube my next batch using your suggestion.

Finally got to the range this weekend, I loaded and shot 30 rounds of my newly cast boolits with the starting load of 4.5 HP38/185 gn at a COL of 1.130.

I'm not sure if I'm getting streaks of lead...

Could you get your answer through specific gravity of the metal?

I want to make sure I learn the proper way to apply the science behind casting and shooting the boolits made by my own hand. Obturation and pressure go hand and hand, this is clearly a variable I...

RobsTV,

Thank you very much for the information regarding boolit obturation, I will leave the FCD die to bulge bust range pick ups. I will also increase my load to 4.5 grains of powder and set my...

Thanks for the information on the loads and PFs, I really need to purchase a chronograph in the near future.

I did receive the lee sizer in .401 and ran about 500 boolits through the die.

I...

Thanks rsrocket1, I am now up to 2,000 cast and waiting for the Lee sizer to show up. I measured as you suggested and get the same dimension regardless. I will take the advice and back the FCD stem...

Thanks for the information on the Smiths, I ordered the sizing die and will try a few to see if I experience leading. I will check my diameters before and after sizing and crimping to see where my...

Thanks again, I will call Lee about the mold and also purchase the Lee sizer. The primary goal is to cast and reload my own boolits for a S&W M&P 40 PRO (5" barrel).

Thanks to all who have responed, here is where I am with my progress.

1. Tried the buldge buster and it is not going to work, the sleeve is a larger diameter than the boolits.
2. Used the FCD (...

I do have the FCD as well as the bulge buster I use for range pick ups. Would there be any benefit of using the bulge buster in the FCD or should I just run them through the FCD? I do appreciate...

Thank you very much for your responses, I have slugged the barrel and I am at .40 per my calipers. The lands and grooves are difficult to get an accurate measurement with calipers, I will measure...

I recently decided to cast my own boolits, I purchased a lee 2 cavity 175 .401 mold. My first casting session was last night after receiving, cleaning and brining my mold up to temperature. Once I...