BHN ? 150 gr cast bullets with gas checks

[lonewolf5347]

I like to ask on this mix any one have any idea the BHN
I use 6 lbs of wheel weights with 4 lbs of linotype. Not the same formula as Lyman #2 but about the same hardness.

[detox]

My wheelweights measures 13 bhn

My linotype measures 22 bhn

I am guessing your 60/40 mix will be 15-16 bhn

[Cherokee]

That mix is about a 2% tin 6% antimony mix, or the typlical "hard" alloy used by commercial casters, around 16-18 bhn. You don't need a hard boolit for revolvers, especially with gas checks. I would cut down the linotype to 1 with 6 COWW (or even 8 COWW) and add a little tin to the mix. But that's just my opinion, and it assumes the COWW are 3% antimony, which now days may be questionable.

[Larry Gibson]

My wheelweights measures 13 bhn

My linotype measures 22 bhn

I am guessing your 60/40 mix will be 15-16 bhn

What method for measuring the BHN? Just interested is all.

Larry Gibson

[lonewolf5347]

will they work in my 30-30 marlin rifle?
diameter .310

[Shuz]

will they work in my 30-30 marlin rifle?
diameter .310

They should work fine, but you may have to experiment with sizing diameter and of course powders.
I have found that 7g of Unique behind a 165g NOE 311-165RF, Bhn 11, .309 sized boolit shoots very well from my 2/ea Marlin .30-30's. Velocity is around 1150 fps and the SD is 3.

[grouch]

Should work fine, maybe a bit hard for hunting. I use 14 or 15 gr of H110 for target(not shooting a marlin, so can't speak to the accuracy in that rifle). If you decided to push it, you should be able to approach full power with that alloy.
Grouch

[runfiverun]

I'd definitely cut down on the lino-type.
I use a 3-1 ww/lino-mix for a few things and that alloy is in the 15 bhn range for me.
your marlin may like a bit bigger boolit,, 311 is closer to what I hear they generally like.