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Retumbo Data For 7.82 Warbird

 
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  #1  
Old 05-02-2004, 07:23 AM
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Retumbo Data For 7.82 Warbird

Does anybody else out here load and shoot Lazzeroni's 7.82 Warbird?
I have a SAKO TRG-S 26" bbl.
I need data with Retumbo for 180-200 grn Accubond bullets.

My current load consists of 180 grn. Swift A-Frame's and 104.5 grns. of Reloder 25 for a 20 shot average of 3474 fps (bullets coated with tungsten disulfide)
I get 1/2" 3-shot groups @ 100 yards

I want to take advantage of the higher BC that the 200 grn. Accubond has .588 vs. .400 for the Swift.

Any info will be appreciated..
Thanks
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How is it y'all still don't know the difference between CALIBER and CARTRIDGE ??

"In guns, particularly firearms, caliber or calibre is the approximate internal diameter of the barrel, or the diameter of the projectile it fires."
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  #2  
Old 05-02-2004, 10:28 AM
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Re: Retumbo Data For 7.82 Warbird

Martusheff, I never did try Retumbo in my WarBird I stuck with RL25. I'm glad to hear your WarBird is shooting well for you, one problem with the TRG-S was the bedding and recoil lug. There is a good thread on this site on replacing the recoil lug and glass bedding the action, this cut my group size in half. I had so many problems with my rifle I eventualy gave up and sent it back and got a Hunter 75 300WM. RL19 works awesome with 168gr TSX as well, the RL25 worked well with 200gr Accubonds. Best of Luck. Ken [img]images/icons/smile.gif[/img]
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  #3  
Old 05-04-2004, 03:30 AM
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Re: Retumbo Data For 7.82 Warbird

N. Sniper, sorry to hear 'bout your bad luck with the Warbird, my brother and I bought ours at the same time (he had his bbl. braked by a gunsmith, I let mine alone) we have no problems with them so far, both rifles shoot 1/2 inch groups with identical loads (104.5 grns. RL 25, 180 Swift A-Frames, bullets coated with Tungsten Disulfide).
The only difference in our rifles is my brother gets 50 fps more, maybe the muzzle brake helps out, I dunno...

My reason for Retumbo is to try to get the utmost in velocity (flatter trajectory, not bragging rights) without pressure increase using the 200 grn. Accubonds.
__________________
How is it y'all still don't know the difference between CALIBER and CARTRIDGE ??

"In guns, particularly firearms, caliber or calibre is the approximate internal diameter of the barrel, or the diameter of the projectile it fires."
WIKIPEDIA


"Fear of weapons is a sign of retarded sexual and emotional maturity"
Sigmund Freud
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  #4  
Old 05-05-2004, 02:10 AM
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Join Date: Jan 2004
Location: Oregon
Posts: 203
Re: Retumbo Data For 7.82 Warbird

Proman you might try e-mailing Lazzeroni and hitting John up for data. I've used IMR7828, RL19, RL22, RL25 with various bullets including 180 Accubonds. Right now I'm shooting 103gr of RL25 behind a 180 Accubond at 3550. If you can't find data you might start with 300RUM data and work up CAREFULLY.

Good luck [img]images/icons/smile.gif[/img]
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  #5  
Old 05-05-2004, 04:45 PM
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Re: Retumbo Data For 7.82 Warbird

Should be something here http://stevespages.com/page8c.htm
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  #6  
Old 05-07-2004, 12:34 AM
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Join Date: May 2004
Location: Alaska
Posts: 455
Re: Retumbo Data For 7.82 Warbird

Hey birdshooter, I was wondering about your 3550 fps with the 180 Accubond and 103.0 grns. of rl 25, are you shooting a Lazzeroni Rifle w/ 27" bbl (12" twist)???

Mine is the Sako TRG-S with a 26" bbl,
My load is 104.5 grns. rl 25 and i'm going only 3474 fps......gakkk..

I think I may have just answered my own question, It may not be bbl length or twist, you must be shooting "naked" bullets, (more friction, higher pressures = higher velocity)

I'm squeezin' coated bullets, (slippery bullets, lower pressures = lower velocity!!)

I did work up to 106 grns. rl 25 to get the magic 3550+ fps (accuracy sucked) but at the expense of flattened primers and loose pockets, so naturally I had to back down.

Reloading is something isn't it!!!
__________________
How is it y'all still don't know the difference between CALIBER and CARTRIDGE ??

"In guns, particularly firearms, caliber or calibre is the approximate internal diameter of the barrel, or the diameter of the projectile it fires."
WIKIPEDIA


"Fear of weapons is a sign of retarded sexual and emotional maturity"
Sigmund Freud
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  #7  
Old 05-08-2004, 12:31 PM
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Join Date: Jan 2004
Location: Oregon
Posts: 203
Re: Retumbo Data For 7.82 Warbird

Proman
From what I have seen every gun is unique. My set up is a 27" Lilja 14 twist tube on a 700 action. That 3550 is with the 180 Accubond uncoated.
I have messed around with a TRG chambered to Warbird. It suffers from the poor recoil lug design N Sniper mentioned. I'm still working at it but I think without metal work it is going to end up being a .75" gun. So far the load in that Sako looks like 93.7gr IMR7828 and a 180 Accubond at 3.690 OAL and 3425fps.
I have noticed the difference between coated/uncoated. Seems like the Barnes X/XLC becomes a completely different animal.
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