Long Range Shooter Forums > General Category > Ballistics > .30 cal problems
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Author Topic: .30 cal problems  (Read 1567 times)
vääpeli
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« on: April 11, 2009, 11:35:15 AM »
ok has eny one had this problem  ok so last week i was shooting att 600 meters and i dial in and shoot one shot and i hit upper  right side corner  ok so i drop 2click´s down and one click left.  hit sentter plate  i tought that was easy.....
but next tree shot went to the right side upper corner then next 2 shots down left corner and then next shot missed the plate up right  the rifle is beddet and its a brno arms 7,62x84.84.
bullets i use were lapua lock base b466 150gr/ n550  55gr powder.



i let the rifle cool donw and it happend again and again  i shot 50 rounds and it kept happening  Huh?
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Sean P.
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« Reply #1 on: April 11, 2009, 05:30:44 PM »
Well could be several things.  First thing what kind of groups are you getting at your zero and are you getting a similar type of pattern at your zero range?  If you have a tight group at 100 meters (19.05mm or less) than I would think it would be one of two things.  1. are you above your "Max" powder charge?  I had a similar problem when I had to much powder in my case.  It had a ok group at 100 yards but I could not even hit the steel at 600 yards.  2.  Your scope and or mounts might be moving or shaking loose when you shoot.  With the .300 RUM I have had 2 different scopes go bad when firing.  One even said that it had been tested on a .50 cal and I knocked the focus completely out.  The other scope the cross hairs would move around from shot to shot which would give you the type of pattern that you are getting.  Check these things out first and then we will go from there.  But no worries we will get it all figured out.  Sniper 
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vääpeli
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« Reply #2 on: April 12, 2009, 03:44:45 AM »
i will  test the muzzle velocity and patern att 100meters.
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Mike OBrien
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« Reply #3 on: April 12, 2009, 12:22:30 PM »
 Sniper 1 Nothing to add to that...good one Sean! Sniper
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vääpeli
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« Reply #4 on: April 20, 2009, 06:33:50 AM »
scope broke............ well it was old enyway   

i tryid to dial down to 100meters but no can do stuck att some where and every shot coes to difrent spot LOL
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Sean P.
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« Reply #5 on: April 20, 2009, 06:42:45 AM »
I thought that might be the case but at least we know the problem.  I love shopping for scopes  Grin
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Mike OBrien
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« Reply #6 on: May 18, 2009, 09:22:01 PM »
 :-*HEH! Shopping is the fun part...paying for them is what hurts...LOL!   Sniper 1
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Mike :{)
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