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Vertical stringing pattern on target

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samchap View Drop Down
.416 Rigby
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Post Options Post Options   Thanks (0) Thanks(0)   Quote samchap Quote  Post ReplyReply Direct Link To This Post Topic: Vertical stringing pattern on target
    Posted: 05 October 2016 at 04:12
My brother has spent several years locating and
refurbishing bolt action 30-30s for his grandsons. Last
Christmas each one got one of them for Christmas.

Monday he took one, a 9 YO, to the range so he could
shoot his. Brother first put two 100 yard shots in the
center to make sure all was ok. His grandson's first
time shooting it and printed nine shots with a ~1" wide
pattern about 5" high on center and about evenly split
vertically. All in all not bad for a shaver's first time
at bat in the big leagues.

I seem to remember that you can tell what is going on
between shooter and the rifle by the shot pattern on
target. I'd appreciate it if someone would explain that
again.
samchap - Waldoboro, ME








Be careful what you decide to not like. Your wife may wear one. Your son may ride one. Your daughter may bring one home. You may have to have one someday.
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BEAR View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote BEAR Quote  Post ReplyReply Direct Link To This Post Posted: 05 October 2016 at 04:25
vertical stringing is usually from letting the rifle
'bounce' up when fired.

All rifles seem to have the axis of the bore above the
butt stock...so then they MUST, under the laws of
physics, recoil muzzle up.

BUT, if you keep the shoulder tightly against the
butt-stock; most of the recoil will be back and the
muzzle rise will be minimal.

Using bench rifle rests like LEAD SLED will make the
vertical stringing much higher/longer. If the recoil
energy isn't used to push the shooter back; then the
muzzle rise will take more energy and rse much higher
thereby making vertical stringing.

When shooting off a bench, I suggest putting one
finger of the non-trigger hand across the barrel just
in front of the scope, pressing downward then firing.
keeps the barrel down on the bag, minimal barrel rise.

Especially for young shooters, using regular sand bags
will get tighter groups. We might think that
absorbing recoil in a lead slead, will help them. but
it doesn't work that way.

30-30 with light loads is one of the best cartridges
for starting young shooters

Assume he is using 340 Savage rifles or a brand marked
variation. I have used on for 35 years to teach dozens
of shooters.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote CB900F Quote  Post ReplyReply Direct Link To This Post Posted: 05 October 2016 at 05:26
Samchap;

There's at least one more point to consider along with
recoil muzzle rise. That's pressure point, particularly
in guns that do not have free-floated barrels. Simply
put, the forearm of the gun should be at the same point
on the front rest for every shot. You'll frequently see
a little tip locator bar at the downrange end of good
front rests for just that reason.

However, if the barrel of the gun you've posted about is
free-floated, then finger pressure on the top of the
barrel will alter the vibration cycle of the barrel. In
other words, it may shoot better off the bench, but it
won't shoot the same way in the field.

Get the boy comfortable on the rest with the gun
unloaded. Then put a piece of masking tape on the bottom
of the forestock just where it contacts the front rest.
Every subsequent shot should have that tape in the same
relationship to the rest. Now have him hold the
forestock just as he would in the field. No down
pressure, just the weight of the arm & hand. If
necessary, put another piece of tape there. He can clamp
with his hand, but don't pull down. The weight of the
arm will control recoil if he's holding it tight enough
to not let the recoil pull the gun out of his hand & let
it rise uncontrolled. Then with the buttstock pulled
firmly into the shoulder, he should be consistent with
his shots.

Another trick is to make sure the trigger finger is in a
large C shape. The finger should not touch the stock.
This will help with pulling the trigger directly to the
rear & eliminate side pressure from the finger's
contraction in tripping the trigger.

And, finally, is the gun scoped or not?

900F
Birth certificate!? He don't need no steenkink birth certificate!!
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samchap View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote samchap Quote  Post ReplyReply Direct Link To This Post Posted: 05 October 2016 at 05:39
Thanks. All good usable advise.

The rifle has a single power 4x scope. I don't recall the
make.

I do remember that when I first fired my 30-06 it was off
two living room couch pillows and I got the best groups
I've ever had with that rest. I'm going to revisit that
set-up for me.
samchap - Waldoboro, ME








Be careful what you decide to not like. Your wife may wear one. Your son may ride one. Your daughter may bring one home. You may have to have one someday.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote BEAR Quote  Post ReplyReply Direct Link To This Post Posted: 05 October 2016 at 12:15
is it a 340 savage or a branded one?
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samchap View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote samchap Quote  Post ReplyReply Direct Link To This Post Posted: 05 October 2016 at 12:47
Bear, I'll get back to you on that.
samchap - Waldoboro, ME








Be careful what you decide to not like. Your wife may wear one. Your son may ride one. Your daughter may bring one home. You may have to have one someday.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Wing master Quote  Post ReplyReply Direct Link To This Post Posted: 05 October 2016 at 14:01
I have also read that if you are using handloads you can
go up with your powder charge to help verticle
stringing.

I would try the other ideas first.

Wing master
I have always considered myself to be quite the bullshitter, But ocasionally it is nice to sit back and listen to a true professional......So, Carry on.
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