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.303 British twist, bullet weights, and trajectories

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09 July 2006, 02:06
Marc_Stokeld
.303 British twist, bullet weights, and trajectories
I am going to build a .303 and was wondering if an 11" twist would stabilze bullets from 150-215 grains.

Also, the rifel will only have iron sights. What type of changes in POI will I see at 100 yards? Should I file the sights for ~170 grains and let the 150's and 215's hit high and low? Doepending on the difference in POI, I could change out the front sights to match the load a little better.

Thanks!
09 July 2006, 13:11
darwinmauser
1 in 10 was the standard twist afaik, 1 in 11 may not stabilize the 215's.


It's mercy, compassion and forgiveness I lack; not rationality.
09 July 2006, 17:53
tiggertate
I'm going to be doing the same thing, Marc. Whose barrel are you using? I was hoping LW would do mine in the original English pattern but I didn't see .312 (or .311 for that matter) on their web site.


"Experience" is the only class you take where the exam comes before the lesson.
09 July 2006, 18:37
Tex21
LW makes a .311" barrel. Give Woody a call and order what you need.


Jason

"Chance favors the prepared mind."
09 July 2006, 18:45
tiggertate
Thanks, Tex.


"Experience" is the only class you take where the exam comes before the lesson.
09 July 2006, 20:36
Bill/Oregon
I have a BSA Mk.III* beater that has had the charger guide removed and a brand new South African surplus barrel fitted. This rifle stabilizes my 225-grain .312 softpoints very nicely.


There is hope, even when your brain tells you there isn’t.
– John Green, author
10 July 2006, 00:10
Marc_Stokeld
tigger:
I was looking at PacNor, and all they offer is 11" twist. Krieger offers other choices, but thsi rifle will not require ultimate accuracy, so I was going with a cheaper one if possible.

Bill:
What twist is the SA surplus bbl?
17 July 2006, 01:31
Marc_Stokeld
Bill-any idea what the twist is for the South African barrerl that shoots the 225's so well?

ALso, who makes those 225 grain .311 bullets?

Thanks!
17 July 2006, 01:44
Tex21
Marc,

Have you looked at Woodleigh lately? I know they make some heavies for the .303 but its been awhile since I have reviewed their website. If you need some 200+ grn bullets, you might check them out.


Jason

"Chance favors the prepared mind."