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Lazz 7.82 Warbird w/190gr Berger VLD

 
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Old 12-08-2011, 10:46 PM
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Lazz 7.82 Warbird w/190gr Berger VLD

well, got thru step #1, seated the 190gr Berger VLD hunting bullet in the Lazzeroni 7.82 (.308) Warbird case, so that the bullet's ogive was right up against the barrel lands, in a newly chambered Lazzeroni rifle ,,,,,,

at that length, it still fit into the mag box just fine, so there will be no cycle or function issues out of the mag box, when using the new load, any Lazzeroni rifle we have ever built ,,,,,

I need to run to Long Beach this weekend, but next week I am going to start shooting them, tuning the load first for speed, pressure and 300 yard accuracy ,,,,,

then once that is all sorted out, it will be time to shoot a hog or two at close range for Christmas dinner, and check the bullet's performance on an actual animal ,,,,,
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Old 12-08-2011, 11:41 PM
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Re: Lazz 7.82 Warbird w/190gr Berger VLD

Keep us informed. I have been told that the Bergers dont shoot worth a crap above 3100-3300 FPS as they come apart.
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Old 12-09-2011, 10:33 AM
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Re: Lazz 7.82 Warbird w/190gr Berger VLD

I'm intrigued to find out how this bad boy performs. Berger VLD + LOTS of powder... it's sure to provide a bunch of these>>>>>>
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Old 12-09-2011, 10:59 AM
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Re: Lazz 7.82 Warbird w/190gr Berger VLD

Quote:
Originally Posted by Sako7STW View Post
Keep us informed. I have been told that the Bergers dont shoot worth a crap above 3100-3300 FPS as they come apart.

Lots of guys run the Bergers at these velocities and they shoot fine. As long as the twist is correct, they will hold to together and not come apart at high speeds. Most people with the 300 RUM's are running 210's in the 3100-3200 range with great accuracry. The following are my personal experiences and accuracy is all well under 1/2moa.

6mm 105 VLD: 3200-3450fps
6.5mm 140 VLD: 3300fps
7mm 168 VLD: 3300-3400fps
7mm 180 VLD: 3400fps (7mm Allen Mag days)
30 210 VLD: 3150-3250fps

I do know of one guy that had the 180's come apart at 3300, but we found out his twist was actually an 8 twist instead of a 9. Big difference at those speeds.
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Old 12-09-2011, 01:24 PM
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Re: Lazz 7.82 Warbird w/190gr Berger VLD

Very interested in how it all works out for you the Warbird and Firebird have always had my eye.
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Old 12-09-2011, 06:35 PM
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Re: Lazz 7.82 Warbird w/190gr Berger VLD

Generally the Berger bullets that have issues with velocity are the smaller calibers in the heavy for caliber weights such as the 22 cals in heavy 80 to 90 gr weights and 6mm in 105 gr. and 6.5mm 140 gr VLD.

These are generally most accurate in velocity ranges up to 3250 fps.

THe larger Bergers such as the 7mm, as mentioned generally do very well up to around 3400 fps in a fresh barrel but in a worn barrel are sometimes limited to 3300 fps for accuracy.

Also, rifling design is critical. You want less then 22% baring surface compression on the bullets by the rifling. Does not really matter what rifling design you have, if your much over 22% baring surface compression, you will likely have accuracy issues, if your barrel has less then this, you will have fine accuracy results most of the time.

Most 3 groove barrels have pretty wide lands and generally have issues with Berger bulelts over 3250-3300 fps. Just something to keep in mind.

Spinning these bullets excessively fast will also cause problems so make sure you have the right twist rate for your bullet weight and velocity range you are working at and less then 22% baring surface compression and you will likely have very few problems with the Berger bullets.

They also shoot the best seated JUST off or lightly touching the lands. I prefer not to load hunting ammo to touch the lands so I seat then 5 to 10 thou off just for increased reliablility.
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Old 01-03-2012, 07:37 PM
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Re: Lazz 7.82 Warbird w/190gr Berger VLD

Well ,,,, no matter what, it is seldom easy ,,,,,

over the last three weeks I have shot around 80 rounds of the 190gr Berger VLD hunting bullet out of two different Lazzeroni Warbird rifles ,,,, both with 12 twist barrels ,,,, one with around 250 rounds thru it, one a brand new model 2012 ,,,

used Retumbo powder and Fed 215 primer, NO lubrication on the bullet ,,,,,, seated both ON the lands and .050 off the lands ,,,, ((this made very little if any difference))

all accuracy testing done at 300 yards ,,,,,

if I shot them at 3200 fps average ,,, 3-shot 300 yard groups were consistent 1 7/8" - 2 3/4" ,,,, not stellar by any means, but workable I think with some fine tuning ,,,,

when I sped them up a little to 3375-3400 average ,,, they went all over the place ,,,,, seems that Sako7stw knows what he is talking about in this area ,,,

I have some 190gr Sierra HPBT on the shelf already NP3 lubed and ready to go ,,,, that will be my next shooting binge, trying IMR-7828 powder instead of the Retumbo since the bullets are lubed well ,,,,, this should also tighten up my shot-to-shot variations ,,,

Does anyone here have any experience with the 190gr Sierra HPBT on decent sized animals ? ,,,,,

I am also going to order another box of the Berger 190s and have them NP3 coated, then start again to see if this will help keep the bullet more uniform as it scoots and accelerates down the barrel ,,,,,

I looked at the differences between the 190gr and the 210/230gr pills in the Warbird out to 1,000 yards ,,, and I just do not see enough advantage to the heavier bullets (in downrange energy & wind drift), to justify the tighter twist and increase in recoil ,,,, not sure all will agree with my opinion ,,,,

I will keep you posted ,,,,,
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