Will a 1 in 10 twist rifle stabilize a 220gr .308 bullet?

Futo Inu · October 1, 1999, 09:52 AM

If so, will a 220 fit in a 308 case, and still have enough room for a full powder charge, to get the bullet over say, 2100 fps?

bfoster · October 1, 1999, 01:23 PM

Yes, the bullet will stabilize.

Edited, later.

I'm now at home & have access to better data including notes. Assuming you are using a bolt gun, H 414 has done quite well for me in 200 grain loads, so perhaps this is a good place to start. I note that several sources give approximately 2200 fps as possible from pressure barrels when a 220 grain bullet is used, but would expect real world results to be a bit slower.

Perhaps a powder with a slightly slower burn rate than H 414 would do better yet. Bob

[This message has been edited by bfoster (edited October 01, 1999).]

October 1, 1999, 09:52 AM	#1
Futo Inu Senior Member Join Date: February 12, 1999 Location: Oklahoma City, OK, USA Posts: 3,624	If so, will a 220 fit in a 308 case, and still have enough room for a full powder charge, to get the bullet over say, 2100 fps?

October 1, 1999, 01:23 PM	#2
bfoster Senior Member Join Date: October 13, 1998 Location: N. of Fords Switch, OK, USA Posts: 297	Yes, the bullet will stabilize. Edited, later. I'm now at home & have access to better data including notes. Assuming you are using a bolt gun, H 414 has done quite well for me in 200 grain loads, so perhaps this is a good place to start. I note that several sources give approximately 2200 fps as possible from pressure barrels when a 220 grain bullet is used, but would expect real world results to be a bit slower. Perhaps a powder with a slightly slower burn rate than H 414 would do better yet. Bob [This message has been edited by bfoster (edited October 01, 1999).]