"Custom" Mold [Archive] - Glock Talk

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WiskyT
11-14-2010, 16:57
I have been using my Lee 175TC six cavity for about a year or so I guess. I've cast several thousand bullets with it and they shoot great. They weigh 180 grains with the range scrap I use.

But, I have tons of 165 grain Ranger T's and SXT's. I also don't have any real need for the extra 15 grains my cast bullets carry around and wanted to put them on a diet. I thought about hunting down a machine shop or sending the mold out to the Eric hollow point guy. A combination of laziness and stinginess has resulted in me using the mold as Lee intended it.

What I didn't know was that becoming a soccer dad had certain benefits. One of my fellow soccer dads is a machinist. He works in a shop that builds high end racing engines. I asked him about it and he told me it would be a piece of cake.

So, using a little geometry, I guesstimated that 0.050" would have to go. He got it back to me the next day, today, and it looks great. Hopefully this week I'll get a chance to fire up the foundry and see how much they weigh, and then how they shoot. I don't care if they are a little over or under, I just wanted something a bit lighter.

The Ranger 165's do 1050 out of my G27, and I get close to that with the 180's with Unique. So, I figure I can get basically the same velocity with the lighter bullet and have lower pressure. Lower pressure is always good. The 180's hit a bit higher than the 165's too, so hopefully the point of impact will be the same with the cast 165's and the Ranger 165's. We shall see.

I think a max load for 180's will give me the velocity I want and be within the pressure limits with room to spare. Load data for lighter cast bullets is rare, I haven't seen any.

Any thoughts or data regarding having this mold decked down are appreciated

WiskyT
11-15-2010, 18:45
I casted a dozen or so just to see how they looked, and weighed. I couldn't do a proper casting session since I'm taking care of some other things right now, but I just had to knock a few out to eyeball. They 165 on the nose. I'm sure Jack will come in here soon and demand a full evaluation from the National Bureau of Standards, but he'll just have to suck on an egg. My scale has been calibrated by none other than Yoyodyne Propulsion. If it's good enough for Dr. Lizzardo, it's good enough for me.

I asked my buddy to remove "about" 0.050" since I didn't want to look picky. I told him if he removed a little less that would be okay. He laughed and said he could hit whatever I wanted with the compueter controled thingies they have. He told me he take off 0.047" and see how it looks.

So the new bullets measure exactly 0.047" less than the standard ones, the mold works great, and they weigh exactly 165. Now all I have to do is cast up thousand or so and see if I can hit anything with them.

GioaJack
11-15-2010, 18:49
So now he's your buddy, huh? In your first post you told us you just met him at your son's ballet recital.

You ain't gonna make it as a criminal, you can't keep your story straight even when you've got it written right in front of you.


Jack

WiskyT
11-21-2010, 20:08
I know Jack has been lying awake at night waiting for a range report on these bullets. I casted up about 500 the other day, too many to fit in a 1# plastic food container, sized and lubed them with liquid alox, and loaded up 100 or so.

I went to the range and brought the chrony along. The 180 grain original bullet did 940fps out of the Glock 27 with 5.0 Universal. The "new and improved" 165 grain bullet did 970 with the same powder charge. I managed to get most of them on a paper plate at 25 yards off hand. So they do fly straight and basically go where they are aimed.

I think they will do better with a lighter charge of Bullseye though. It's too early to say. This Universal is supposed to be like Unique, but the data for it, and my results with it, make it seem more like 231. I think it's faster burning than at least I was lead to believe. I think it was at it's limit with the load I was using with my cast bullets. Maybe not in terms of chamber pressure, but in terms of accuracy. Oh well, nearly a full pound of it was in my father's loading room, he apparently didn't have any use for it either, so I'll finish it up since I'm too lazy to empty the Dillon measure and reset it with something else.

I'll try a G22 with that load and maybe 4.5 and see if I can get the group size down. If that doesn't do it, I'll use 3.5 or so of Bullseye or 5.2ish of Unique. I'll see how they do with a warmer load of Unique to get to the 1050 I want from the G27.

It's easier to evaluate accuracy at our indoor range. At the outdoor range, like today, I have to call the line safe to evaluate the targets. At the indoor, you just hit the button and the target comes back to you.

GioaJack
11-21-2010, 20:46
I could have died from sleep depravation waiting for your stupid report. After all this buildup to the magical new mould you end up with a whopping 30 fps more. You can spit faster than that.

Before you post another range report please learn how to shoot so we can actually determine the new magic bullets potential.

I will be asleep while you try to accomplish this task.

Sincerely,
Jack

Colorado4Wheel
11-22-2010, 09:22
So, using a little geometry, I guesstimated that 0.050" would have to go.

And you give me a hard time for measuring stuff.:rofl:

fredj338
11-22-2010, 16:55
Sounds like a success. I use a Lyman RNFP that does a bit over 170gr w/ ww alloy. Your 5.2gr of Unique should hit just over 1000fps.

WiskyT
11-22-2010, 18:38
I could have died from sleep depravation waiting for your stupid report. After all this buildup to the magical new mould you end up with a whopping 30 fps more. You can spit faster than that.

Before you post another range report please learn how to shoot so we can actually determine the new magic bullets potential.

I will be asleep while you try to accomplish this task.

Sincerely,
Jack

Actually, I just checked my scraps of paper that were in the car last night, and the, velocity of the two weights, with the same charge of Universal, are identicle. I wanted a lighter bullet to save lead. I've reduced the lead usage by 8% to be in comportmant with Al Gore regulation 253 (a) of Title 17USC.

WiskyT
11-22-2010, 18:40
And you give me a hard time for measuring stuff.:rofl:

I measure stuff that matters. Not the amount of oxxidation on the tip of each bullet to better calibrate COAL:whistling:

Colorado4Wheel
11-22-2010, 18:49
You do that!!!! Thats freaking nuts.

WiskyT
11-22-2010, 18:57
Sounds like a success. I use a Lyman RNFP that does a bit over 170gr w/ ww alloy. Your 5.2gr of Unique should hit just over 1000fps.

That's what I figure. I'm going to load some at 5.5 Universal and see if that gets me to my target velocity with reasonable accuracy. After the Universal is gone in a few weeks, I'll probably settle on something similar with Unique. I'll shoot it side by side with the Ranger 165 and 165 training ball I have to see if the POI is the same, and if the subtle differences in velocity change the "feel" of the recoil an appreciable amount (doubtful).

fredj338
11-22-2010, 19:15
That's what I figure. I'm going to load some at 5.5 Universal and see if that gets me to my target velocity with reasonable accuracy. After the Universal is gone in a few weeks, I'll probably settle on something similar with Unique. I'll shoot it side by side with the Ranger 165 and 165 training ball I have to see if the POI is the same, and if the subtle differences in velocity change the "feel" of the recoil an appreciable amount (doubtful).

I get great accuracy w/ that bullet over Unique or WSF running around 1000fps.