Win 760 in 30-06 w/Boolits

[school of mines]

Hello! I have some WIN 760 I would like to use in my 30-06 with 185 grain GC boolits. Anyone have any references? I did a search and couldn't find anything.

Thanks!

[Ben]

http://www.castpics.net/subsite2/ByCaliber/Cast%20in%20the%20Ought%20Six.pdf

[Nobade]

I use 760 to very good effect in my 30-06 with paper patched boolits. But these are loaded to full factory velocity and pressure. I don't think it would be a good choice for normal cast boolits because it only really works right at full pressure. Turn it down much at all and you get hangfires. I would recommend against using it for this application, and go with some IMR4895 or similar instead.

[Blammer]

yea, start close to this

http://i54.photobucket.com/albums/g81/blammer8mm/Targets/File0153.jpg

[madsenshooter]

I've used it in my Krag with some good results, but I cast my bullets out of a 23BHN alloy and shoot them at 2175fps. That's what 38gr of 760 gives me out of the Krag with a 185gr boolit, so Blammer's load must be moving a pretty good clip too. You'll for sure want to fire it with a magnum primer. This rifle always throws the first couple high then settles in to group.

http://castboolits.gunloads.com/imagehosting/thum_12364f1261e2bf4a3.jpg (http://castboolits.gunloads.com/vbimghost.php?do=displayimg&imgid=3456)

[school of mines]

Thanks for the info guys! I'll have to double check the bhn of my boolits since it looks like we have to run WIN 760 at a pretty good clip!

[madsenshooter]

Lee's Modern Reloading goes down as far as 26gr with a 190gr bullet @1570fps. I can't say what sort of results to expect though, his "calculations" were but extrapolations really. No test firing was done.

[school of mines]

Thanks for the info in Lee's Reloading manual madsenshooter! I will have to match my boolits hardness to the chart and see where to start.

[Blammer]

My accuracy was crappy until I got to the 43gr load.

Suddenly there was less smoke, and more accuracy. I'm supposin the powder finally bumped up and caused the boolit to seal better. :)

[madsenshooter]

Or finally got up to the pressure where the powder would do more than fizzle Blammer! School of mines, Lee's book shows data for H414, which I've found to be interchangeable with 760 data. Bear in mind, Lee somewhat extrapolated this data, and his pressure/velocity data is based on jacketed bullets. Your velocity with cast boolits will be higher and the pressure lower than the figures he gives for a given charge. According to Lee's chart Blammer's 43gr should have produced 2180-2280fps and 35700-36900psi. Faster than I've ever got a spitzer to shoot worth a hoot, I've got that mold, will have to give it a try, my group above was with Eagan's MX2-30H, a 185gr conical nosed bullet. The lower pressure/velocity figures are 180gr bullets, the higher figures 190gr. Anyway, you have a better idea of where to start.

[honus]

760/H414 are too slow for reduced charges. They are near H4350 in burn rate but are denser. H4895 may be a better choice for mid CB loads.