MY 25 X 47 LAPUA BUILD & LOAD WORK-UP

[Bill Norris]

Just an update on these. An employee from Sierra reached out to me last nite on Facebook and said he will have someone get in touch with me today to get the perts on this bullet to see if the issue could be remedied.

Sierra is sending an RMA to get the bullets back so they can evaluate the issue with their tools. If they make it right we may try them again but for now the 135 gr. Berger is making me happy no doubt.

 

[Bill Norris]

For those interested in load data for the 25 X 47 Lapua this is the data sheet obtained form Berger Bullets. I had asked for data for VV-N555 but below Mr. Bob Blaine replied with this memo.

"Thank you for contacting us at Capstone PG. Unfortunately, we are not offering VihtaVuori Load Data for use with the .25 X 47 Lapua using N555 with our Berger 135gr LRHT bullet. This is due to the fact that it would load to a fill ratio of 108% and this is a situation where we would need more powder than we have available internal case capacity to hold all of the needed powder and still have enough room left over to properly seat a bullet. In essence, N555 is simply too slow of a burn rate powder to be useful in this application."

 

[Bill Norris]

Was a question concerning chrono numbers (Garmin) for the .071 5-shot group @ 100 yds. I posted last week in post # 11. Can't wait to get this thing out to 300 & 600 yds. to see how it works out. I am totally happy with what I'm seeing with these numbers.

CAUTION - DO NOT DUPLICATE THIS LOAD WITHOUT THE CORRECT REAMER
IT IS PERSONAL TO MY SMITH - ODCR

135 GR. BERGER LRHT 2.131 O M 2.883 COL T/L B S .456 B C .650
POWDER VV-N540 38.3 GR. PRIMER CCI 450 .281 BU. T/S @ -0-
SEATED @ 2.124 O M 2.876 COL .007 OTL 07/11/25
.071 5-SHOT GP. 2933 FPS 6 E S 2 S D 83 DEG. 88 % REL/HUM