RCBS 165gr Silo .308 Casting Tips

[Leadmelter]

Just got this beauty of a mold. Any casting tips to keep the bore riding portion at .300? Linotype only?
Leadmelter
MI

[Kraschenbirn]

RCBS 30-165SIL, sized .310, is my 'go-to' for the Garand. The nose dia. of my boolits measures .300/.301 cast from 4 parts Lyman #2 and 1 part lino...approx. 21-22 Bhn. I only cast this hard for the Garand to minimize nose deformation during feeding, otherwise, for my .308s (and, occasionally .30-40s) I cast from straight Lyman #2 without any appreciable leading. Sized correctly, at reasonable velocities, I think you'll find there's no real need to cast from uncut lino.

Bill

[RickinTN]

Mine drop at about .3018" with that mold and approximate wheel weight plus tin alloy. The tad bit oversize is actually a benefit I think. Cast some and see what you get. It's my 30 cal molds that cast under .300" that are about useless to me.
Rick

[bobthenailer]

A super accurate boolet ! rcbs specs the boolet with lino alloy but a alloy of 15 bhn will do fine. if your boolet mould specs correctly. with that alloy as mine does

[runfiverun]

i barely make 300 with mine using ww's and tin.

what i do is manipulate whatever alloy i have untill the nose comes out with engraving marks from the chamber end.
300 might be spec for the mold but my rifle doesn't know that.
anyway my alloy is 4/6/90 for the 165 silh mold even pushed along at normal cast velocity's it's a bit more accurate than the ww and tin alloy i use for most everything else.