bamabound Posted June 17, 2016 Share Posted June 17, 2016 I see a lot of people who like Black Bullets International but, don't understand as it has been a general rule of thumb for cast bullets to use FMJ diameter +0.001. BBI lists theirs at .400 when according to general rule of thumb should use .401 for coated lead. I had to use all the way up to a .358 projectile for my Glock 34 to get a very nice group. What is your take on this? Link to comment Share on other sites More sharing options...
Edge40 Posted June 17, 2016 Share Posted June 17, 2016 It totally depends on your barrel. Some may like a .400 better if the chamber is a little tighter. The only way to know for sure is to swage your barrel or shoot multiple diameters and see what works best in your gun. Link to comment Share on other sites More sharing options...
bamabound Posted June 17, 2016 Author Share Posted June 17, 2016 I figured so, I know every gun is different but just was curious as to what others find. Link to comment Share on other sites More sharing options...
sx2gl35 Posted July 25, 2016 Share Posted July 25, 2016 Both of my G35 bores slugged out to .401. I'm using .402 coated lead with great success. Both of my G34 bores slugged out to .356. Have not yet loaded for those yet, but I have .357 coated lead ready to go. I'm glad I slugged the stock Glock barrels...no guessing or trying involved. Link to comment Share on other sites More sharing options...
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