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Bullet stabilization
#7255660
08/14/18 08:46 PM
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Joined: Dec 2012
Posts: 693
JTS
OP
Tracker
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OP
Tracker
Joined: Dec 2012
Posts: 693 |
I ordered one of the Europtic Tikka specials in 300 win mag. I have been reading about loads for this rifle and some are saying that a rifle like this may have difficulty stabilizing a heavy bullet in the 200-210gr range because of the 1-11 twist rate.
I guess my question is how can you tell if your rifle will stabilize a certain bullet? Can you just keep increasing the weight of the bullet and see when accuracy drops off? In order to determine this do you just work up a load and find an ES/SD at a velocity you are happy with and see if the bullet is accurate?
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Re: Bullet stabilization
[Re: JTS]
#7255670
08/14/18 08:53 PM
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Joined: Nov 2007
Posts: 9,521
RiverRider
THF Trophy Hunter
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THF Trophy Hunter
Joined: Nov 2007
Posts: 9,521 |
It's the length of the bullet that comes into play, not its weight. Bullets of the same weight can vary in length by enough to matter.
"Arguing with you always makes me thirsty." -Augustus McRae
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Re: Bullet stabilization
[Re: JTS]
#7255676
08/14/18 08:58 PM
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Joined: May 2016
Posts: 352
cblackall
Bird Dog
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Bird Dog
Joined: May 2016
Posts: 352 |
Use the Berger twist rate stability calculator on their website. You can pick a Berger bullet from a list, or enter your bullet’s info (weight, length, BC, caliber). Then plug in your twist rate, estimated velocity, atmospherics, etc.
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Re: Bullet stabilization
[Re: JTS]
#7255685
08/14/18 09:04 PM
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Joined: Sep 2009
Posts: 18,951
ChadTRG42
THF Celebrity
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THF Celebrity
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Posts: 18,951 |
^^ This. But the issue you will have with the Tikka is the short magazine box that the factory rifles use. Their mag box has a max length of about 3.350". This is a short length for many of the longer and heavier bullets. I shoot a Hornady 225 grain BTHP in my 300 WM with an 11" twist. It does fine. But I seat it out to about 3.6", and push the speeds up around 2800 fps in a 29" barrel. You won't be able to do this with this bullet in that rifle. But you could run a 208 grain BTHP seated to about 3.340" and it work just fine with the right powder. Twist rate calculator: http://www.bergerbullets.com/twist-rate-calculator/
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Re: Bullet stabilization
[Re: JTS]
#7255720
08/14/18 09:32 PM
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Joined: Dec 2008
Posts: 41,171
J.G.
THF Celebrity
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Joined: Dec 2008
Posts: 41,171 |
^^Good info above.
The story I have is for a Tikka .300 Win Mag, a friend of mine owns. I have him loaded with 210 gr Berger VLD-Hunting. As Chad said, you will not get to the rifling, in a Tikka long action. There is too much free-bore. So I loaded to mag length, and found the correct charge of H-1000, and it works just fine.
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Re: Bullet stabilization
[Re: JTS]
#7255722
08/14/18 09:34 PM
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Joined: Sep 2009
Posts: 18,951
ChadTRG42
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Posts: 18,951 |
And a 200-210+ grain bullet in a light weight 300 WM, ouch! That thing will be kickin'!!!
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Re: Bullet stabilization
[Re: JTS]
#7255742
08/14/18 09:50 PM
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Joined: Dec 2008
Posts: 41,171
J.G.
THF Celebrity
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THF Celebrity
Joined: Dec 2008
Posts: 41,171 |
That's what brakes are for
800 Yard Steel Range Precision Rifle Instruction Memberships and Classes Available
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Re: Bullet stabilization
[Re: ChadTRG42]
#7255746
08/14/18 09:55 PM
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Joined: May 2010
Posts: 4,073
RedSnake
Extreme Tracker
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Extreme Tracker
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Posts: 4,073 |
^^ This. But the issue you will have with the Tikka is the short magazine box that the factory rifles use. Their mag box has a max length of about 3.350". This is a short length for many of the longer and heavier bullets. Our long action AICS bottom metal will allow an OAL of 3.50 and will fit in factory stock or aftermarket stocks with factory inlet.
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Re: Bullet stabilization
[Re: JTS]
#7255748
08/14/18 09:56 PM
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Joined: Dec 2008
Posts: 41,171
J.G.
THF Celebrity
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THF Celebrity
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What's the distance of bolt face to the feed ramp?
800 Yard Steel Range Precision Rifle Instruction Memberships and Classes Available
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Re: Bullet stabilization
[Re: J.G.]
#7255759
08/14/18 10:11 PM
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Joined: May 2010
Posts: 4,073
RedSnake
Extreme Tracker
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Extreme Tracker
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Posts: 4,073 |
What's the distance of bolt face to the feed ramp? Not sure off the top of my head so I’ll need to look.
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Re: Bullet stabilization
[Re: JTS]
#7255765
08/14/18 10:17 PM
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Joined: Dec 2008
Posts: 41,171
J.G.
THF Celebrity
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THF Celebrity
Joined: Dec 2008
Posts: 41,171 |
You've got calipers at home. I know it!
800 Yard Steel Range Precision Rifle Instruction Memberships and Classes Available
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Re: Bullet stabilization
[Re: JTS]
#7255782
08/14/18 10:38 PM
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Joined: May 2010
Posts: 4,073
RedSnake
Extreme Tracker
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Extreme Tracker
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Posts: 4,073 |
Max length of opening on bottom of action is 3.625. Distance from bolt face is slightly less.
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Re: Bullet stabilization
[Re: JTS]
#7255812
08/14/18 11:06 PM
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Joined: Dec 2012
Posts: 693
JTS
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OP
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Posts: 693 |
RedSnake, I was looking to replace the bottom metal and use AICS mags. I have heard of another company making a replacement bottom metal so I could use the AICS mags. I didn't realize you guys make one also.
Last edited by JTS; 08/15/18 03:50 PM.
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Re: Bullet stabilization
[Re: JTS]
#7255819
08/14/18 11:15 PM
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Joined: May 2010
Posts: 4,073
RedSnake
Extreme Tracker
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Extreme Tracker
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Posts: 4,073 |
You can use that one if you are willing have the trigger housing milled away. But they do make a quality part. Here’s ours...
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Re: Bullet stabilization
[Re: JTS]
#7258905
08/17/18 03:28 AM
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Joined: Mar 2018
Posts: 1,158
Scott W
Pro Tracker
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Pro Tracker
Joined: Mar 2018
Posts: 1,158 |
Man I want my T3 300wm to look like that. Maybe one of these days. I've got your website bookmarked!!
Last edited by Scott W; 08/17/18 03:28 AM.
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