Reply With Quote80's would work better form the 1/8 you will possibly have keyholes with the 80's from the 1/9. What speeds are you going to try and obtain ??
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80gr amax in a 9 twist anyone ?
has any one tried it ? I want to order some bullets , I know I can shoot the 75 gr amax , just not sure about the 80gr , thanks for any input
If your lucky enough to live in the BIG woods your lucky enough
80's would work better form the 1/8 you will possibly have keyholes with the 80's from the 1/9. What speeds are you going to try and obtain ??
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[FONT=Comic Sans MS][SIZE=3]U.S. Army Retired Disabled Veteran[/SIZE][/FONT]
I would bet you should be able to make them work. I have been shooting 95gr bullets out of my 12 twist 6-06 for a long time now. Velocity will play a big role in stabilizing the 80 grainers
Yes what chambering and how fast are you sending those 75s.
Dean
RUMs are like woman in Stiletto heals, you know they are going to put you in the poor house, but that has never stopped anyone from pursuing them.
They work well in my 9 twist 22-250 Savage lrpv.
I wanted them to work in a 223 factory barrel , my friends factory axis 223 shoots the 75gr real good .5ish - at 100 yards
If your lucky enough to live in the BIG woods your lucky enough
75's in a nine twist, 223...sometimes. Depends upon velocity, air density, and bullet length. 75 SMK's probably. A-Max probably not, too long and tend to tumble, but barrel twist rates tend to vary so you may actually have a 8 1/2 twist and be able to stabilize an A-max.
Here's what you need to know; http://www.bergerbullets.com/twist-rate-calculator/
You're looking for a stability index of 1.5 or better.
For example, my 9 twist factory barrel would shoot 75 SMK into tiny groups on a hot (100 F), humid day at a field elevation of 900 ft. But the density altitude is 3500 ft under those conditions. Below 100 F, it shot like crap.
Last edited by Texas10; 06-01-2016 at 06:43 AM.
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