Worlds Finest Trimmer 2: GETTING IRRITATED!

[bigdawg86]

Ok so I bought this thing and can't seem to get it to cut even remotely consistent with 300 blackout. The whole idea of "just put a master case and go" thing is worthless.

I did a batch of 1000 and it worked OK, but now that I am on a new batch it's back to square one and I am getting irritated.

Just to maintain uniformity I cut, formed, sized without making a single adjustment to my dies. So in theory the shoulders should all be uniform. I have ensured "cam over" and a complete size per stroke.

I used my Lyman universal trimmer to trim to 1.360, placed that into the WFT and it cut waaaay short (1.350 range). I thought this may be due to the Lyman trimming the based off the cartridge and not the shoulder. So via trial and error managed to get one or two set at 1.360 and tried again. Nope.

Does anyone have any tips on getting this stupid thing setup? I am not looking for perfect, I want it close!

[Stainned]

I can relate. I found it trimmed more consistent when I separated my cases by the .10 range. Of course each time I had to reset the trimmer but those I had separated where very close in length. But, too much work for me so now I used it just to cut below 1.750 on my .223 and I am happy. For more consistent lengths I hand trim with my Hornady and drill to turn it.

[dung8604]

I size and then cut a case with a Lee trimmer. From there, I loaded it into the WFT to get me in the ballpark. I backed off a bit, trimmed and measured until I got it where I wanted.

Ideally, the entire cutting surface will spin exactly perpendicular to the axis of the case, but there is some slop in there. This slop causes the 'lower' points of the cutter to remove more material than the higher ones. This is also why you should give it a quarter turn to make sure the edge is square.

It is somewhat cumbersome to set up the first time, but after that, it shouldn't give you any issues.

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[bsumoba]

although i have not tried 300 blackout on the WFT2, Im using it on mil brass for .308 and .223 and for my 6.5creed.

had no issues getting good results.

email the mfg and ask them if they can help. they replied to a question I had within a day.

[pdq_wizzard]

I would defiantly contact them, I have one for 223 and one for 6.8, I run mixed brass and have always been with in .005 on both.

[bigdawg86]

I sneaked into the garage and ran a little experiment when my wife was busy lol... I ran a few cases into the resizing die without the expansion ball. The first 5 were spot on. I wonder if the expansion ball mixed with different case thickness from mixed brass is causing my problem. Without the expanding ball, the case is sized to external dimensions only so differences in case wall thickness would no longer be a factor? The blackout has such a subtle shoulder I wonder if that small variable will give me the problem.

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[bsumoba]

I sneaked into the garage and ran a little experiment when my wife was busy lol... I ran a few cases into the resizing die without the expansion ball. The first 5 were spot on. I wonder if the expansion ball mixed with different case thickness from mixed brass is causing my problem. Without the expanding ball, the case is sized on the outside only so differences in case wall thickness would no longer be a factor? The blackout has such a subtle shoulder I wonder if that small variable will give me the problem.

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Sounds like you might have found your problem. Like I mentioned, Im doing .308, 6.5 and .223 and have had nothing but good results. I even ditched my table top case trimmer because the WFT2 is faster.

[bigdawg86]

Unfortunately that means I get to run 1000 cases through the sizing die again...

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[dung8604]

I sneaked into the garage and ran a little experiment when my wife was busy lol... I ran a few cases into the resizing die without the expansion ball. The first 5 were spot on. I wonder if the expansion ball mixed with different case thickness from mixed brass is causing my problem. Without the expanding ball, the case is sized on the outside only so differences in case wall thickness would no longer be a factor? The blackout has such a subtle shoulder I wonder if that small variable will give me the problem.

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Hmmm that sounds weird. The expanding ball only touches the neck, but the trimmer is supposed to index off of the shoulder. You could be right though, about blackout having a small shoulder area as opposed to 223.

Sizing without the expander ball may cause issues when you try to seat a bullet.

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[bigdawg86]

Hmmm that sounds weird. The expanding ball only touches the neck, but the trimmer is supposed to index off of the shoulder. You could be right though, about blackout having a small shoulder area as opposed to 223.

Sizing without the expander ball may cause issues when you try to seat a bullet.

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Well I am currently using boat tail bullets, so don't expect a problem. I will be eventually using resized 7.62x54 pills that have a flatter base. Will see how it goes.

[Stainned]

Could the expander could be pulling the shoulder up?

[krwada]

Could the expander could be pulling the shoulder up?

Yes!

[bigdawg86]

Could the expander could be pulling the shoulder up?

That did cross my mind, the down stroke seems to do more than "brush the neck"... I may take .001" or so off of the expanding ball if I have trouble seating the bullets I have in transit.

[stephewc]

I would have to second that the expander ball is stretching the shoulder on the way out, which throws off the WFT trimmer since it indexes off the shoulder. It really does not take much to stretch it 0.001" or more.

I sometimes encounter cases that have a hard time getting past the expander ball on the way out. I measured using a set of headspace comparator gauges and verified that these cases almost always have longer shoulders than what I'm trying to size to. These do not trim accurately in my WFT either.

To remedy, I usually size those cases twice and the 2nd time it is usually fine.

[Germz]

Giraud....