Fighting with the tenths.

[nueces5]

Fighting with the tenths.
Since I started doing my boolits, I always had problems with the diameter. The first was Lee 312-185, he never gave me more than 311. Then the rest also happened the same. I have done lapping, beagleling etc to get more diameter in my boolits. But I have never noticed the alloy and the temperature. I think I should go a little that way. What do you think? What should I look first?

[OS OK]

https://i.imgur.com/dbANumy.jpg

[RED BEAR]

I would try the heat settings first easiest. What kind of lapping compound are you using? It should not be much of a problem to take out a .001 or so. I use heat tape to enlarge my handgun bullets. No better than i shoot anymore i can't see any difference at 25 or 50 yrds. Not sure how well it would work on rifle never tried it for them.

[nueces5]

I think I'm going to try to add more antimony to my alloy.
Between that and the PC should get comfortable to .357
Thank you very much for the info

[waco]

My two cents is buy better molds. I have lots of Lee molds that drop an undersized boolit. If you powder coat this problem can easily be resolved.

[gwpercle]

The next time you need/want a new mould take a look at NOE Moulds.
I purchased a 9 mm 124 gr mould , NOE 358-124-TC-GC for 9mm Luger .
It drops .3575 with my alloy . Size/lube @ .357 I use it for 9 mm. Run them through sizer/lube @.358 and I load them in 357 magnum (gas check works ) and 38 special .
Love this versatile mould...3 in 1 .

38 special / 357 magnum bullet mould.... NOE 360-160-WC ! This is Al's recreation of the discontinued Lyman 358432 design...which I have . Lyman drops undersized for most of my cylinder throats ... NOE version drops .3595 with my alloy . Sized to .359 and this boolits a Tack Driver !
Much more accurate than the undersized Lyman... this boolit is such a sweet one I grabbed one in this design for 41 Magnum... NOE 413-215-WC , I was concerned about 413 dia.
It drops .4125 with my alloy sized/lube @ 412 it's a perfect fit in my model 58 S&W .
Until this time I had been sizing .410 as per Lyman Manual #3 & #4 instructions . This is actually a tad too small...the NOE designs correct this .
My alloy is 50-50 COWW and lead + 1% printers type for tin .

If you are suffering from undersized boolits check out NOE's moulds , I think Al Nelson might have a solution for you... Plus the moulds are a joy to cast with .
Gary

[nueces5]

Hi, believe me if I tell you that I would love to.
There are some molds for my 7.65x53 that I would like to try.
But I live in Argentina, and it is really difficult to bring something from there.