.308 win. & IMR4350, 200grain #311299.

[Dthunter]

What charge weights do you guys reccomend?
I know some of you have tried it.
I am looking to increase my load density, yet not push the boolit past 2200 ish.

Any ideas?

[Larry Gibson]

Start at 34 gr, work uo in 1 gr increments, use a dacron filler until loading density is at 85%. If your rifle has a 12" twist 2200+ fps with very useable accuracy with 311299 is quite feasable. If a 10" twist then 2000 - 2100 is more probable.

Larry Gibson

[Dthunter]

Thanks for the info Larry! I was thinking of starting at that charge, but wanted a more experienced cast boolet shooter to confirm my plans.

Have you ever used Filler for Varget at 34.0 grains?
I am getting 2150fps with that charge.

Yes my twist is 1:12"

[Larry Gibson]

Yes, with any powder (except the fast pistol powders) in the slow end of the "fast group"; 4227, 2400, 4198, 4759, 5744, etc) up through the slow burners I use a dacron filler when loading density is at or less than 80 - 85%. That includes Varget.

With that bullet I favor AA4350 over IMR4350 as it seems a little more consistent in ignition with the reduced psi loads with cast bullets. Don't hesitate to try H4831SC or even RL22 with that 311299 bullet in your 12" twist .308W.

Larry Gibson

[lead chucker]

larry
I have a ruger compact in 308 win and you have answered some questions for me on the 311299 I cast up some this afternoon. 50/50 about 1.5% tin water quenched. My question is I have some reloaded 22 and have no load data for cast bullets.what is a good starting and ending point.

[Larry Gibson]

larry
I have a ruger compact in 308 win and you have answered some questions for me on the 311299 I cast up some this afternoon. 50/50 about 1.5% tin water quenched. My question is I have some reloaded 22 and have no load data for cast bullets.what is a good starting and ending point.

I think that Ruger has a 10" twist(?) so start at 36 gr and case capacity with RL22 will be the ending point. work up in 1 gr increments. Under 85% loading density use a 1/2 - 3/4 gr dacron filler. Accuracy should tighten up as you work up and then go south as it goes beyond the RPM threshold. Use at least 7 shot test strings and chronograph if you can for consistency of the load.

Larry Gibson

[lead chucker]

Yep 1-10 twist and start with 36 gr Rl22
I didn't mean to hijack this thread, sorry

[Dthunter]

No problem Lead chucker! This thread is for everyone to benefit!

I might even try the R22 route, just to see.

[303Guy]

I've found the stick powders tend to peen the boolit bases without a protective wad. Ball powders less so. I've also found the a dense polyester filler protects the boolit base from powder peening. But then I'm using a soft alloy.

H4350
http://i388.photobucket.com/albums/oo327/303Guy/30grFILLER_35grNOFILLER_2209_208gr-1-1-1.jpg

WW748
http://i388.photobucket.com/albums/oo327/303Guy/194grwithwithoutWB004.jpg

H4227 and polyester filler
http://i388.photobucket.com/albums/oo327/303Guy/22gr2205214IMP006-1.jpg