PDA

View Full Version : 2nd trial of Berger 175 BT match, w/PICS



308sako
03-27-2008, 11:09 PM
Link to first test: http://www.benchrest.com/forums/showthread.php?t=50452

Using the middle load of the previous load development and the only variable being seating depth. Contact would appear to be 3.050, .045 barely shows, and .055 engraves. The following 25 rounds were fired this morning in these conditions; temperature 65 to 75 F (during these strings), humidity 8%, barometer 29.86, elevation 3340 ASL.

Rifle is a Remington VSSF 26", .308 Win. Scope is Leupold LRT 8.5 x 25 fine duplex, shot at 25 power. Stock (adjusted) trigger.

15 fouler/sighters were fired until the rifle and the shooter settled down. This zero was obtained at 300 yards, and only one click left was added for wind after the first five seen here. The rounds were fired in the order shown. (3.015 - 3.055)

Lapua brass, Fed 210 M - 42.3 grains of IMR 4064 COL = 3.015"
group is 1.716" x 1.578" with no allowance for bullet diameters.

http://i181.photobucket.com/albums/x160/308sako/DSCN0099.jpg


Left group is 3.025 COL, Right is 3.035 COL

Left 1.630" x 2.751" Right 1.505" x 3.414" no allowance.

http://i181.photobucket.com/albums/x160/308sako/DSCN0100.jpg


Left group is 3.045 COL Right is 3.055 COL

Left 1.816" x 1.068" Right 1.911" x 1.657" no alowance

http://i181.photobucket.com/albums/x160/308sako/DSCN0101.jpg



OKAY, so help out here, what do I do with the remaining bullets?

Thinking of shooting 3.050 COL" at 500 meters, my longest available range if the wind will cooperate. Appreciate the feedback.

Thanks for looking.

miele
04-29-2008, 03:38 PM
Excellent shooting :D
Have you tried Varget or RL15 in 308 ?
My Sav m12/benchmark barrel has shot quite a few 1/2 inchish
groups at 200 yards with the 175 MK and 178 A max;)
Thanks
John

308sako
05-01-2008, 10:47 AM
Excellent shooting :D
Have you tried Varget or RL15 in 308 ?
John


Actually I have nearly finished my first Keg of Varget, but have not as yet tried R15. For many years have shot IMR 4064 with all weights in the .308. Now in an experimental mood, I am trying H4895 but concentrating on 155 Lapua Scenars. I also strongly recomend the Vita V series of powders.

rmorr01
05-02-2008, 07:54 PM
Actually I have nearly finished my first Keg of Varget, but have not as yet tried R15. For many years have shot IMR 4064 with all weights in the .308. Now in an experimental mood, I am trying H4895 but concentrating on 155 Lapua Scenars. I also strongly recomend the Vita V series of powders.

Just wondering how H4895 was working for you? good/bad/ok?

308sako
05-03-2008, 01:25 AM
So far I have not had any spectacular groups, and while consistant and somewhat easy to meter I am not going to chase any more of it. I think that Varget and VV 540, along with my old standby IMR 4064 are getting the workload.