5% failure rate

[superior]

I am rejecting about 5% of my boolits. Is that about the right amount or do I sux?:Fire:

[Johnch]

Depends on what the other 95% look like and what you plan on using them for

I probely reject 10% for some uses , as I want them 100% perfict
For some uses I probely only reject .5% , but 50' plinking dosn't need a perfict bullet

John

[felix]

For example, boolits for a bench gun, and highly accurate "varmint" guns: if 85 percent fall within 0.2 grains, the lot is chosen for separating those which are 0.0, +0.1, -0.1 grains. If the lot is less than 85 percent kosher, the entire lot is rejected and the lead modified until the pouring quality is met. On some days, 3 hours are spent, and no production results for these guns. For lever guns in genuine rifle calibers, there is no lot acceptance, but visual inspection of each boolit. For pistol calibers, the gun type is ignored, and only those individual boolits looking grossly off beat are rejected. ... felix

[9.3X62AL]

Overall, for non-serious pistol shooting--a 5% reject rate on eye-balled boolits is pretty darn good casting.

[Shuz]

I am rejecting about 5% of my boolits. Is that about the right amount or do I sux?:Fire:

A lot would depend on what you call a "reject" and what the boolits intended use is, as others have stated.

What boolit are you talking about? What are you shooting it in?

[mto7464]

i have 50% rejects using a bottom pour and about 15% with laddle. That is why I am laddling more now.

[superior]

I'm making Tl.401-175-swc for my Glock 23 and I'm rejecting the ones with visual flaws only.
I use a small eliptical cast iron pot and a ladle on a coleman stove. I've never measured or weighed them. I recylce any boolits with bottoms not completely filled out or ones with marks or wrinkles. I only keep perfect looking, slightly frosty boolits.

[NSP64]

5% is a pretty good pour for pistol boolits. If I am casting pistol boolits I only visually inspect unless, I am going to shoot a match then I weigh them also. Rifle I do both all the time. I will reject any visual flaws but then just seperate them in groups by weight.

[copdills]

sounds good to me

[yondering]

I'm making Tl.401-175-swc for my Glock 23 ...
I've never measured or weighed them.

Might be worth measuring those. I have the same mold, and it casts both cavities at .411" instead of .401". Sizing down to .401" (which will happen in the barrel anyway) completely wipes out the lube grooves. Lee said they would replace it, but my buddy's going to try them in his .41 Mag first.

[jhrosier]

The only ones that I count as failures ar the ones that I drop and they roll way under the bench where I can't get them. Any others that don't meet my standards are simplly thrown back in the pot with the sprues for another chance.

5% 'remelts' is not too bad by my standards, it is only a couple of minutes work per hour of casting. I usually cull out another 1% or so for defects that I don't notice until sizing.

Jack

[Tom Herman]

I'd be very happy with that. I guesstimate I have 10-15% failures after tightly QC'ing my castings.

Happy Shootin'! -Tom

[JohnH]

Realizing how obvious this is and not wanting it to be interpreted as "talking down", How many boolits do you make in a casting session? I find that 95% of the boolits I reject are made in the first 100 boolits. Making more boolits per session should reduce your rejects. I try to cast for at least 3 hours at a time these days, and am able to make about 800 boolits during that time. While I've never counted it, 5% of 800 would be 40 boolits, I toss less than that.

[NSP64]

I am not a volume shooter and I only cast 100-200 boolits at a time.I find that if I preheat everything I don't have a high reject rate.:Fire:

[superior]

I make about 100 boolits per cast. Last night I decided to measure some and found that some are out of round at the base but not at the forward driving band. Are they ok to shoot and will they give crappy accuracy? The forward bands are at .403 with my alloy. Is that a result of bad pouring or could one of my cavities be out of round?

[NSP64]

Your shooting pistol boolits,if they chamber shoot them. At pistol ranges(25-50yrds) small imperfections won't matter.