WC860 for 150gr 270 loads?

[Jeffery8mm]

I have a bit of WC860. Would this be useful for a 150gr Sierra SP in a 270 Winchester?? Any ideas on starting loads?? Speed??
Thanks
Jeff

[Ricochet]

It'll work. See if you can find H870 or AA8700 load suggestions.

[Buckshot]

...............A full caseload of WC860 in the 6.5x55 Swede (M38, 24" bbl) with a 140gr Hornady SP delivered 2700 fps. The bullet was seated to engrave. Superb accuracy and burned very clean.

A casefull in the 7x57 Mauser with a Rem C-L 175gr PSP delivered 2450 fps (M98/08 Brazilian, 29" bbl). Again it was very accurate, and burned as clean as factory ammo.

Your 270 (.277") is between those 2 in bore ID, but has a larger case capacity then either example. I would load the case to 90%, with the bullet just off the lands. Things should be jake, and if so re-load and put the bullet into the lands, if this is how your rifle shoots best.

I'm sure you can go to a full case, but I'm certain you know about being a smart safe reloader and all that. I'd think you'd probably end up with that 150gr slug going about 2850 (ish).

.................Buckshot

[James C. Snodgrass]

I just loaded some like you but ain't gone to the range yet. James

[wiljen]

Quickload shows 60gr of H870 with the 150gr sierra yielding 2500 fps from a 24 inch tube. Not exactly a barn burner of a load but should make venison all the same.

[James C. Snodgrass]

Well I just got back from the range and the new 270 went bang it actualy shot under 1 moa . But it was to windy to chrono I know that sounds crazy but when you have to keep hold of your spotting scope and a empty hard rifle case try to leave the bench it will blow my chony over so who knows how fast but it was good any how . James[smilie=2:

[Jeffery8mm]

Thanks guys!! As always, alot of good info here!!
Jeff