« previous next »
Pages: [1]   Go Down

Author Topic: 45/70 guide gun sighting ???  (Read 1950 times)

0 Members and 1 Guest are viewing this topic.

Offline handi270

  • Trade Count: (0)
  • Member
  • *
  • Posts: 84
45/70 guide gun sighting ???
« on: February 02, 2009, 12:10:29 PM »
Got my new guide gun last friday!

Took it out to sight it in today. Got a phone call that cut my session short, but I have a question.

Started out shooting at 25 yards, just to get in the ball park.

Got close with Rem. 405 grain.

Then went to LE ammo and they were 6 inches low.

Like I said, my session was way to short, but are these guns that sensitive to  diff. ammo?

By the way, recoil with the Rem was about like my .410, LE was stouter, but not at all bad.
Logged

Offline hawken54

  • Trade Count: (0)
  • Member
  • *
  • Posts: 32
Re: 45/70 guide gun sighting ???
« Reply #1 on: February 02, 2009, 01:05:18 PM »
i haven't had much chance to sight in the guide gun i bought yet but i did just recently shoot the remington 405 loads in my new 22inch handi and at 25 yards they shot 6 inches high, and i was about to adjust the sights when i shot a 325 LE and it hit dead center maybe 1/2 inch high at 25 yards. i was shocked by this i thought it would be the other way around, but at 50 yard the LE ammo was all in the bullseye with iron sights. cant wait to shoot some more out to 100 yards. good luck and keep us informed on how she shoots. thanks donnie
Logged

Offline handi270

  • Trade Count: (0)
  • Member
  • *
  • Posts: 84
Re: 45/70 guide gun sighting ???
« Reply #2 on: February 02, 2009, 03:58:42 PM »
Donnie, thats about what happened to me, I stated with the Rem and they were about 6 inches high. I adjusted the sights to bring the poi down, then I tried the LE ammo and it was about 6 inches too low.

If I had started with the LE my experience would have duplicated yours.

Back to the range for more fun.

thanks, noel
Logged

Offline teddy12b

  • GBO Supporter
  • Trade Count: (0)
  • Senior Member
  • *****
  • Posts: 3078
Re: 45/70 guide gun sighting ???
« Reply #3 on: March 10, 2009, 05:25:24 AM »
Keep us posted.  I have a 1895G on the way and want to know how you all sight yours in.
Logged

Offline EsoxLucius

  • Trade Count: (1)
  • A Real Regular
  • ****
  • Posts: 601
  • Gender: Male
Re: 45/70 guide gun sighting ???
« Reply #4 on: March 10, 2009, 08:56:00 AM »
Quote
but are these guns that sensitive to  diff. ammo?

What isn't when the difference is over 700 fps of velocity and 80 grains of bullet weight?
Logged
We learn something new everyday whether we want to or not.

Offline J-Train

  • Trade Count: (0)
  • Avid Poster
  • **
  • Posts: 103
Re: 45/70 guide gun sighting ???
« Reply #5 on: March 10, 2009, 09:36:29 AM »
I love my GG, ;D but sighting in with such a wide variety of ammo can be a challenge.  The factory loads are very mild.  Some of my stouter handloads have a much different point of impact. I've experimented with lots of handload combinations, and they all give good accuracy.  I installed the XS ghost ring sight set on mine, and had to raise the rear sight as high as it would go, then had to file down the front sight for one of my 405 gr. loads.  I've since installed a Weaver K2.5 scope, and it has all the adjustment I need.
Logged

Offline Coyote Hunter

  • Trade Count: (0)
  • Senior Member
  • *****
  • Posts: 2534
Re: 45/70 guide gun sighting ???
« Reply #6 on: March 11, 2009, 03:21:28 AM »
Quote from: handi270 on February 02, 2009, 12:10:29 PM
...
Got close with Rem. 405 grain.

Then went to LE ammo and they were 6 inches low.

Like I said, my session was way to short, but are these guns that sensitive to  diff. ammo?

...

Yes. 

I have some loads that shoot about the same, but they use bullets of similar weight at similar speeds.  Change things up and the POI can change significantly.
Logged
Coyote Hunter
NRA, GOA, DAD - and I VOTE!

Offline brianscott12

  • Trade Count: (2)
  • Contributor
  • ***
  • Posts: 310
  • Alabama
Re: 45/70 guide gun sighting ???
« Reply #7 on: March 11, 2009, 05:29:41 AM »
Why would the lighter and more aerodynamic bullet shoot lower. Just curious. I have a guide gun but only shoot le when hunting.
Logged
To seize the opportunity of a lifetime you must do so within the lifetime of that opportunity.

Offline efremtags

  • Trade Count: (0)
  • Contributor
  • ***
  • Posts: 358
Re: 45/70 guide gun sighting ???
« Reply #8 on: March 11, 2009, 02:30:14 PM »
I handload from 325 to 425. The lighter ammo always shoots lower. The trajectory is typicaly flatter so the less prominent arc puts it lower at close range (20 - 50 yards) with a typical sight in distance of 100 - 150yds.
Logged

Offline jlwilliams

  • Trade Count: (2)
  • Senior Member
  • *****
  • Posts: 1321
Re: 45/70 guide gun sighting ???
« Reply #9 on: March 12, 2009, 12:33:27 AM »
  I had a similar experience trying to sight in a 44mag carbine (not Marlin)  with two different rounds.  I had a box of inexpensive commercial reloads and a box of Horady Leverevoluton.  So completely different that it was not realy a time or money saver sighting in with the cheap ones because they were too different from the hunting ammo.

  Turns out the gun likes American Eagle 240gr JHP.
Logged

Offline BBF

  • GBO Supporter
  • Trade Count: (0)
  • Senior Member
  • *****
  • Posts: 10042
  • Gender: Male
  • I feel much better now knowing it will get worse.
Re: 45/70 guide gun sighting ???
« Reply #10 on: March 12, 2009, 06:37:38 AM »
The best and easiest explanation I have heard is that the heavy bullet/ slower velocity load has more time to flip up the muzzle and hit higher on the close range target then a lighter/faster bullet since it leaves the barrel quicker before the recoil flips the muzzle up.

I have seen this when I increased powder charges using the same bullet and as the loads got hotter, the impact on the target went down.
Logged
What is the point of Life if you can't have fun.

Offline brianscott12

  • Trade Count: (2)
  • Contributor
  • ***
  • Posts: 310
  • Alabama
Re: 45/70 guide gun sighting ???
« Reply #11 on: March 12, 2009, 11:07:57 AM »
Quote from: BBF on March 12, 2009, 06:37:38 AM
The best and easiest explanation I have heard is that the heavy bullet/ slower velocity load has more time to flip up the muzzle and hit higher on the close range target then a lighter/faster bullet since it leaves the barrel quicker before the recoil flips the muzzle up.

I have seen this when I increased powder charges using the same bullet and as the loads got hotter, the impact on the target went down.
Makes sense. ;D
Logged
To seize the opportunity of a lifetime you must do so within the lifetime of that opportunity.

Offline efremtags

  • Trade Count: (0)
  • Contributor
  • ***
  • Posts: 358
Re: 45/70 guide gun sighting ???
« Reply #12 on: March 12, 2009, 01:02:17 PM »
i think that sound like mythbuster urban legend more than factual. do the math of the time it takes a bullet traveling 1700 or 1850 fps to leave an 18.5" barallel
. It's so close as to be in determinant.
Logged

Offline EsoxLucius

  • Trade Count: (1)
  • A Real Regular
  • ****
  • Posts: 601
  • Gender: Male
Re: 45/70 guide gun sighting ???
« Reply #13 on: March 13, 2009, 02:30:45 AM »
Logged
We learn something new everyday whether we want to or not.

Offline tdd4570

  • Trade Count: (18)
  • Avid Poster
  • **
  • Posts: 112
  • Gender: Male
Re: 45/70 guide gun sighting ???
« Reply #14 on: March 13, 2009, 10:18:30 AM »
It might be mythbuster material.

But, in a handgun the slower loads always shoot to a higher poi than the faster loads.

dd
Logged

Offline timothy

  • Trade Count: (0)
  • Contributor
  • ***
  • Posts: 267
Re: 45/70 guide gun sighting ???
« Reply #15 on: March 13, 2009, 02:34:33 PM »
Its no myth. Heavy or slow will impact higher than light or fast bullets.
Logged
Pages: [1]   Go Up
« previous next »