awaveritt
10-14-2009, 12:35 AM
Tonight I got a wild hair and decided to weigh some of the 400 boolits I cast this week and discovered that (out of 25 or so boolits) 60-70% of them weighed 125 grains and the others weighed 124 grains; All of this out of a Lee double cavity TL-356-124-2R. So that got me thinking of a couple of questions: Could one cavity be dropping the one weight and the other dropping the different weight? Also, I weighed these after applying the LLA so would that skew my weighing them. Also, what kind of variance do you all see among your multiple cavity moulds, as it seems to me that a six-cavity would really be even more prone to this.
OK, I'm editing to share some additional observations: I can tell which cavity the bullet came from because of the location of the sprue mark on the bullet base. One is off center and these boolits weigh 124 grains and are slightly out of round when measured with a caliper - .356 - .357 - .358. The other cavity produces a 125 grain boolit and is consistently round and measures .357. So. . . . is this all that out of the ordinary or is this enough difference to quibble over. I'm going to the range later this week for my first testing of the boolits in 9mm and .38 snubby. Meanwhile, interested in your observations on this. Thanks.
OK, I'm editing to share some additional observations: I can tell which cavity the bullet came from because of the location of the sprue mark on the bullet base. One is off center and these boolits weigh 124 grains and are slightly out of round when measured with a caliper - .356 - .357 - .358. The other cavity produces a 125 grain boolit and is consistently round and measures .357. So. . . . is this all that out of the ordinary or is this enough difference to quibble over. I'm going to the range later this week for my first testing of the boolits in 9mm and .38 snubby. Meanwhile, interested in your observations on this. Thanks.