Retumbo Data For 7.82 Warbird

[proman1]

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

[NorthernSniper]

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]

[proman1]

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.

[orwapitihunter]

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]

[NorthernSniper]

Should be something here http://stevespages.com/page8c.htm

[proman1]

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!!!

[orwapitihunter]

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.