Lee TL309-230-5R Mod Question

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jungleman9941
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Lee TL309-230-5R Mod Question

Post by jungleman9941 » Mon Mar 03, 2014 8:46 pm

has anyone milled down this mold to lighten it up? i would like it to drop about 150-160gr. this is for a 300 blackout. i have a 312-160 already, i was hoping to get something that may feed better.

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Re: Lee TL309-230-5R Mod Question

Post by wlc » Mon Mar 03, 2014 9:44 pm

Have you tried their 311-155? Lots of folks have had good luck with that one. Probably cheaper than having your current mold milled down if you have to hire the work out.

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Re: Lee TL309-230-5R Mod Question

Post by yondering » Tue Mar 04, 2014 9:06 pm

I've considered milling down a 230-5R mold like the OP suggests, because the nose has a better profile for an AR magazine than the 312-155. I have not done the mold yet, but I have cut down some bullets. I believe a 135-140gr bullet is possible, with a good profile, and easy enough to do (with the right tools) if you powdercoat the bullets and don't worry about lube grooves.

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Re: Lee TL309-230-5R Mod Question

Post by plant.one » Wed Mar 05, 2014 12:57 am

if you mill the mold down you'd be shaving the boat tail off the boolit. Isnt that part of what makes this mold so desirable for the blackout?
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Re: Lee TL309-230-5R Mod Question

Post by Rushthezeppelin » Wed Mar 05, 2014 11:17 pm

plant.one wrote:if you mill the mold down you'd be shaving the boat tail off the boolit. Isnt that part of what makes this mold so desirable for the blackout?
Only when its powder coated though which I doubt was Lee's original intention. With regular lubed lead the boat tail can actually cause gas cutting which leads your barrel and kills accuracy. You can check it but then that kills the whole point of the BT. Powder coated though it behaves more like a jacketed boat tail and simply serves to increase BC and decrease wind drag. Still it would be a bit of a tradeoff turning it into a lighter mold as you rightly point out, but I think for alot of AR users the better feeding profile should win out.

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Re: Lee TL309-230-5R Mod Question

Post by jungleman9941 » Sat Mar 08, 2014 10:54 pm

i just ordered this mold, i plan on milling it down and will keep you all posted

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Re: Lee TL309-230-5R Mod Question

Post by Dolomite_Supafly » Mon Mar 17, 2014 5:57 pm

Rushthezeppelin wrote:
plant.one wrote:if you mill the mold down you'd be shaving the boat tail off the boolit. Isnt that part of what makes this mold so desirable for the blackout?
Only when its powder coated though which I doubt was Lee's original intention. With regular lubed lead the boat tail can actually cause gas cutting which leads your barrel and kills accuracy. You can check it but then that kills the whole point of the BT. Powder coated though it behaves more like a jacketed boat tail and simply serves to increase BC and decrease wind drag. Still it would be a bit of a tradeoff turning it into a lighter mold as you rightly point out, but I think for alot of AR users the better feeding profile should win out.
Lee did not design the bullet, an employee from Midway USA did. Lee tried to convince then that the boat tail was a bad idea but Midway was adamant the mold must have a boat tail so they built what Midway wanted.
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Re: Lee TL309-230-5R Mod Question

Post by Rushthezeppelin » Mon Mar 17, 2014 6:56 pm

Dolomite_Supafly wrote:
Rushthezeppelin wrote:
plant.one wrote:if you mill the mold down you'd be shaving the boat tail off the boolit. Isnt that part of what makes this mold so desirable for the blackout?
Only when its powder coated though which I doubt was Lee's original intention. With regular lubed lead the boat tail can actually cause gas cutting which leads your barrel and kills accuracy. You can check it but then that kills the whole point of the BT. Powder coated though it behaves more like a jacketed boat tail and simply serves to increase BC and decrease wind drag. Still it would be a bit of a tradeoff turning it into a lighter mold as you rightly point out, but I think for alot of AR users the better feeding profile should win out.
Lee did not design the bullet, an employee from Midway USA did. Lee tried to convince then that the boat tail was a bad idea but Midway was adamant the mold must have a boat tail so they built what Midway wanted.
Interesting. Well I guess some of us are glad they did the boat tail. Hopefully I'll be one of those people when I finally get around to ordering mine (waiting for a big enough shopping list for midway to offset shipping).

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Re: Lee TL309-230-5R Mod Question

Post by Quiettime » Mon Mar 17, 2014 10:42 pm

Well now you're also waiting for them to come back in stock. Went to order mine a couple weeks ago and none available :-/

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Re: Lee TL309-230-5R Mod Question

Post by jungleman9941 » Wed Mar 19, 2014 10:10 pm

i got mine over the weekend from Titan reloading they had 19 in stock, fast shiiping and would order from them again. i will cast some as they are and see how they shoot when they are PC and than mill down the mold.

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