LEE TL309-230-5R bullet with Titegroup for subsonic .308

[Worldtrav]

Hey guys, I have some Titegroup powder and wanted to cast my own bullets and use them in a subsonic load. Has anyone tried a load for .308 using a cast LEE TL309-230-5R bullet ? What was your load? I have read somewhere one post where they used 6 grains of Titegroup but wanted to double check and see if anyone has experience with this powder and bullet weight.

Thanks!

[Misery-Whip]

Welcome in! First things first, be super careful with unpublished loads. Especially with fast powders.

Interesting idea. I would start by assembling a dummy round, seating a bullet in a case with no powder or primer, and seeing if this combo will fit into your magazine. If it does see if it will feed thru your action.

If this works out. Hodgdon.com has data for 308 and titegroup, but it only goes up to 220 grains. They are calling out a jacketed sierra match king. No other data I have goes above 180 in 308.

Don't give up yet, if this is the only published data you can find id take your mold to a machinist and have them shave .02 off the blocks to make it a 220 grain mold.

And the speeds you will be running this to keep it subsonic it's going to drop like a stone before it gets to 100 yards.

[SiliconeSword]

This is a good boolit for the 300blk guns I have so I think it'll do nicely if your twist rate is up to it.
Hodgdon has data for subs with titegroup so I'd start at whatever their max is as I'm sure it's very low pressure compared to a normal load. You'll have to probably do a ladder load as comparing a 220gn jacketed boolit to a 230(for me 238) grain cast bullet will have differences as well as Hodgdon does their data with very long barrels, so you may need to up your charge depending on the barrel.
I shoot mine powder coated at 8bhn and they survive a 1:5 twist barrel well enough when sized to .310. I'd size as large as will chamber, which will likely be .310 or .311.
Depending what you want out of this project it may be worthwhile to use some pillow stuffing as a case filler at some point as I've had it help with accuracy on very low case fill loads sometimes.