Getting Fat boolits

[soldierbilly1]

OK, I have a Lee 6 banger, 356-120-TC that my 9's really love, it's a TL and it works reasonably well in my Taurus 92 and Beretta 92. My first batches dropped measured at about 0.3575. My 9's like 0.358, so I thought this was a little shy (occasional, mild leading) and decided to add a little tin, keep the temp at 720, run the mold a little colder than normal, and do a little "pressure pouring."

OK, now my mold is dropping at 0.3600" (4 significant figures). I will size to .358. However, is .360 too high?

What is normal? (I am not making large boolits by squeezing the sprue plate handle! (My other 9 mold, a Lee 6'er, is 356-124-2R and drops at 0.3585," my guns do not like this boolit very much.)

BTW, both barrels slug out to 0.3565."

too big?

billy boy No need to beagle here!

[tazman]

As long as you can size them easily, they are not too big.
You changed several thing in your combination so it is hard to say any one thing caused this. Since you are only sizing down .002 I don't see a problem.

[LAH]

.002 shouldn't be a problem.

[DrCaveman]

Consider yourself lucky! Sizing down .002" is no prob usually, and your boolits will be as round as the sizing die...likely more round than when dropped.

My 2-cav mold of the same shape drops about .3565-.3575. I size to .356 after water dropping, it works with no leading in my polygonal rifled baby eagle.

Im no expert caster but i find some diameter variation between sessions. I peg it to the fact that my alloys differ slightly, my fluxing frequency, the ambient temp.

[Shiloh]

I love it when I get oversize boolits. .002 is no issue at all.

Shiloh

[Cmm_3940]

You must be doing something right.. :)