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.243 Win 105 Amax & 95 Berger VLD loads?

 
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  #8  
Old 05-25-2005, 12:02 PM
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Re: .243 Win 105 Amax & 95 Berger VLD loads?

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I know this increase pressure but how much?


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Irrelevant as long as you work the load up with them all into the lands.

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Where do I need to start w/my load development etc.?

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I usually start with a medium load listed in the "lawyerized" manuals of today.

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Can a guy extract a round once it's chambered or do you have to fire it?


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It depends on how rough your throat is and how far it is jammed in, but you will definetly want to be aware of this. Usually, it will get stuck so keep a cleaning rod with you so you can tap the bullet out of the throat.


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Also, what would be the best powder for me to try? From what I've seen on the net, IMR or H4350 seems to be the most popular.


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Those will work, but try a few others in that burn rate.
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  #9  
Old 05-25-2005, 12:08 PM
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Re: .243 Win 105 Amax & 95 Berger VLD loads?

H4350 is a winner for this project.

Personally id start with 1 bullet and 1 powder, b/c when you get too many variables it can get messy quick

find your powder charge with a ladder, then shoot several 3-shot groups with differing OAL (i go in 5thou steps)

I bet the 95 berger with about 44gns of h4350 20-30thou in the lands oughta do well.

YMMV,
JB
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  #10  
Old 05-25-2005, 12:18 PM
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Re: .243 Win 105 Amax & 95 Berger VLD loads?

Hi Bill,
Just in you in case you might be interested i will be working up and testing loads with the 90grn Lapua Scenar in my 243 next Thursday, it too has a 9 1/4 twist.

Let me know and i will give you a full report.

Ian.

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Old 05-27-2005, 07:31 AM
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Re: .243 Win 105 Amax & 95 Berger VLD loads?

Also try retumbo i have had great results with it and the 105's & 107 sierias. [img]/ubbthreads/images/graemlins/grin.gif[/img]
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Old 05-27-2005, 08:33 AM
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Re: .243 Win 105 Amax & 95 Berger VLD loads?

I shoot both of these out of a 243 AI and use RL22 with both. Around 42-43 with the 105 and up to 46gr with the 95gr Bergers. You can try the lands but dont for get to try and jump them. I wasted about half my barrel trying to get them to shoot in the lands. Backed them off and found that a .020 jump seems to be what it wants.
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Old 05-29-2005, 11:24 AM
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Re: .243 Win 105 Amax & 95 Berger VLD loads?

Went and tested the bullets yesterday with some pessimism.
The bearing surface on the 95 Berger is about 0.35 give or take and the throat on the 240 is about 0.31 give or take. Never one to trust my own calculations, I dropped a bullet down the chamber and then took a fired case and closed the bolt. Got the case and bullet back out by using a cleaning rod to ease the bullet back off the lands as the bolt opens. Sure enough, the bullet was just in the case by a gnats eyelash. Decided that this was not good when using an FN action because it is very difficult to ease a loaded round into the chamber without the bullet getting knocked around at some point. Seated the bullet by intuition on what I felt would keep the bullet aligned and still get as close as possible to the lands. This was probably about 0.15 off the lands. Loaded up 10 rounds all the same being as it was pretty obvious at this point what was going to happen in a 1-10 twist barrel. Fired 5 rounds at the 100 yd target and none hit the paper. Dropped back to the 50 yd target and fired three rounds. All were yawed out at about a 60 degree angle. Very interesting keyholes. Waited until the end of the day and shot the last two into the back stop to be rid of them.

105 Amaxs seated very close to the lands shot groups of about 4-6 inches and and were more than a little unstable judging by the oval holes.

When all that testing was done a thunderstorm came up with swirling winds and rain and the little 70 gr SMK went 0.5 inches for 5 rds. I conclude that my gun with the long throat and slow twist, will not stabilize these bullets and the little short 70 SMK does not mind the long jump to the lands. It is a shame because they are some great looking bullets.

Hope you have a better experience.
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  #14  
Old 05-29-2005, 03:47 PM
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Re: .243 Win 105 Amax & 95 Berger VLD loads?

I just got my Bergers in Friday. Hope to get some loaded this week and do a little testing either late next week or next weekend. I'll let you know how it turns out.
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