a friend of mine brought a new mod. 70 feather weight 300WSM by this evening. it shoots 2 - 1/2" groups 1" apart. we fired 10rds, it puts 5 in each group 1" apart. eather group would be great but the way it shoots you end up with 1.750" over all group. he's tried 4 differnt bullets and 3 powders all with the same results what gives?
------------------ born on a mountain, raised in a cave, hunting and fishing is all i crave!
You might want to checked the bedding of the rifle, and make sure the scope screws are tight. My brothers gun was having this problem and after we bedded the gun it stopped and now shoots 3/4" consistantly.
could be a parallax error of the scope. depending of the position of the eye relative to the ocular of the scope you couls be aimming at different points... montero
Posts: 875 | Location: Madrid-Spain | Registered: 03 July 2000
Far too much variety to ascertain any consistency;
10 rounds using 4 different bullets and 3 different powders!
You need to do an analytical series of shooting tests. Some time ago we posted a sequence that entailed shooting a series of 5 shots per day over a period of 4 differnet days using a master and 5 targets.
But I would suggest that you use consistently the same loads, powders and bullets for each sequence. Otherwise you will never be able to separate the various performance characteristics.
When you get two groups from a rifle, that is a sure indication that you have one or two things occurring...side pressure in the barrel channel or pressure on the action causing it to shift...Glass bedding is the quick cure, or just rebed the action and barrel....either will work. don't let some would be gunsmith hog out that barrel channel, just find the location of the pressure and relive it. A good glass job will go a long way in keeping the problem form returning. the problem being factory wood that is still curing (green)...It will cure in time on your gun and take a permanent set. This may take several years.
quote:Originally posted by William E. Tibbe: Far too much variety to ascertain any consistency;
10 rounds using 4 different bullets and 3 different powders!
You need to do an analytical series of shooting tests. Some time ago we posted a sequence that entailed shooting a series of 5 shots per day over a period of 4 differnet days using a master and 5 targets.
But I would suggest that you use consistently the same loads, powders and bullets for each sequence. Otherwise you will never be able to separate the various performance characteristics.
Kendall Dace.
i must not have been clear, i'll try to clear it up. the 10rds we fired yesterday were all the same load with 150g BTs. he has also tried loads with 4 differant bullets and loads with 3 differant powders. all were just like the the one's we fired yesterday. the barrel is floated, the scope mount and rings are all tite, the scope is a new leupold VXII 3x9. i'll glass & pilier bed the stock and see what that does. thanks
------------------ born on a mountain, raised in a cave, hunting and fishing is all i crave!
quote:Originally posted by gone hunting: i must not have been clear, i'll try to clear it up. the 10rds we fired yesterday were all the same load with 150g BTs. he has also tried loads with 4 differant bullets and loads with 3 differant powders. all were just like the the one's we fired yesterday. the barrel is floated, the scope mount and rings are all tite, the scope is a new leupold VXII 3x9. i'll glass & pilier bed the stock and see what that does. thanks W.E.T./ I have had similar problems and read in a gun rag that the "double grouping...esp. with more that one load and session COULD be an internal problem with the lens group in the scope and is not detectable without manu. equipment....I LOVE Leupold scopes and been thru 24 of them..had a NEW out of box scope give problems...returned...it was defective and they fixed and returned quickly....no more problems....try a DIFFERENT scope first before doing bedding changes and if that doesn't fix the problem then you know it has to be the bedding!!!!good luck and good shooting.....in ONE nice small group!!!
Posts: 687 | Location: Jackson/Tenn/Madison | Registered: 07 March 2001
Gone Hunting, So far this year we have had three customer's rifles do exactly the same as you describe with yours. Out of eight to ten shots, we would have two groups. Sometimes not five - five, or four each, but always two distinct groups. The groups were not similar between the three rifles. Different distances apart and at three o' clock and nine o' clock with one and two and eight o' clock with the other. Our gunsmith's first reaction was to glassbed, but I have had this happen often enough in the last twenty five years to try a scope switch first. In all three cases changing the scope cured the problem. Two were Leupold and one was a Lynx.
quote:Originally posted by Gerard: Gone Hunting, So far this year we have had three customer's rifles do exactly the same as you describe with yours. Out of eight to ten shots, we would have two groups. Sometimes not five - five, or four each, but always two distinct groups. The groups were not similar between the three rifles. Different distances apart and at three o' clock and nine o' clock with one and two and eight o' clock with the other. Our gunsmith's first reaction was to glassbed, but I have had this happen often enough in the last twenty five years to try a scope switch first. In all three cases changing the scope cured the problem. Two were Leupold and one was a Lynx.
found the poroblem see my other post thanks
------------------ born on a mountain, raised in a cave, hunting and fishing is all i crave!
