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Beretta shoots low
#7108236
03/11/18 11:54 PM
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Joined: Jul 2012
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603Country
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My Beretta PX4 9mm shoots great, but low. Sights are not adjustable, so I suppose my only option is to adjust the reloads. I’m shooting 115 gr JHPs that are loaded warm but not hot. Would shooting a heavier bullet bring that POI up? I’m a revolver guy, so this problem is new to me.
I suppose I could just aim a bit higher, but that isn’t my preferred solution.
Not my monkeys, not my circus...
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Re: Beretta shoots low
[Re: 603Country]
#7108245
03/12/18 12:03 AM
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SnakeWrangler
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You could always take a file and lower the rear front sight a bit....
I believe in science and I’m an insufferable [censored] Actually, BBC is pretty damn good "You Cannot Simultaneously Be Politically Correct And Intellectually Honest!"
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Re: Beretta shoots low
[Re: SnakeWrangler]
#7108252
03/12/18 12:06 AM
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Posts: 31,055
HWY_MAN
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You could always take a file and lower the rear sight a bit.... Lower the rear? Needs to lower the front.
Yes! A Weatherby does kill them deader.
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Re: Beretta shoots low
[Re: 603Country]
#7108253
03/12/18 12:07 AM
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Joined: Mar 2017
Posts: 449
spankyttx
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wouldn't that make it shoot lower? seems filing the front sight would be the trick to bring it up
LI-SI-WI-NWI
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Re: Beretta shoots low
[Re: spankyttx]
#7108255
03/12/18 12:10 AM
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Joined: Jan 2011
Posts: 65,526
SnakeWrangler
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You could always take a file and lower the rear sight a bit.... Lower the rear? Needs to lower the front. wouldn't that make it shoot lower? seems filing the front sight would be the trick to bring it up
I fixed it...I was thinking backwards....
I believe in science and I’m an insufferable [censored] Actually, BBC is pretty damn good "You Cannot Simultaneously Be Politically Correct And Intellectually Honest!"
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Re: Beretta shoots low
[Re: 603Country]
#7108317
03/12/18 01:06 AM
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Joined: Apr 2011
Posts: 988
okie44
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Shooting a heavier bullet would raise the poi.
�The trouble ain't that there is too many fools, but that the lightning ain't distributed right.� Mark Twain
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Re: Beretta shoots low
[Re: 603Country]
#7108326
03/12/18 01:10 AM
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Grizz
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What do the sights look like?
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Re: Beretta shoots low
[Re: okie44]
#7108334
03/12/18 01:14 AM
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BigPig
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Shooting a heavier bullet would raise the poi. Heavier bullets fall faster, right? Gravity?
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Re: Beretta shoots low
[Re: BigPig]
#7108343
03/12/18 01:21 AM
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Tactical Cowboy
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Shooting a heavier bullet would raise the poi. Heavier bullets fall faster, right? Gravity? Travel slower, spend longer in the barrel, theoretically should hit higher because recoil should point the barrel higher.
The secret to a long life is to try not to shorten it.
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Re: Beretta shoots low
[Re: Tactical Cowboy]
#7108348
03/12/18 01:24 AM
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Joined: Apr 2011
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okie44
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Shooting a heavier bullet would raise the poi. Heavier bullets fall faster, right? Gravity? Travel slower, spend longer in the barrel, theoretically should hit higher because recoil should point the barrel higher.
�The trouble ain't that there is too many fools, but that the lightning ain't distributed right.� Mark Twain
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Re: Beretta shoots low
[Re: 603Country]
#7108373
03/12/18 01:42 AM
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603Country
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i’ll try the heavier bullets. Can’t hurt. And i’ll think about buying the adjustable sights. Thanks for the suggestion on the sights.
Not my monkeys, not my circus...
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Re: Beretta shoots low
[Re: VAFish]
#7108390
03/12/18 01:56 AM
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Posts: 65,526
SnakeWrangler
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Now whats the fun in that.....
I believe in science and I’m an insufferable [censored] Actually, BBC is pretty damn good "You Cannot Simultaneously Be Politically Correct And Intellectually Honest!"
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Re: Beretta shoots low
[Re: 603Country]
#7108597
03/12/18 01:04 PM
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Joined: Jul 2010
Posts: 1,320
Crews
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try a "drive the dot" sight picture instead of using the top of the front sight post?
if that doesn't work, just replace the front sight post. You can buy different heights, just have to do some research on what you have so you can find a suitable replacement.
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Re: Beretta shoots low
[Re: 603Country]
#7108615
03/12/18 01:21 PM
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Buzzsaw
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SPACE FOR RENT
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Re: Beretta shoots low
[Re: 603Country]
#7108616
03/12/18 01:21 PM
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I went ahead and ordered the adjustable rear sight. That seems like the best solution to the problem. Now I will need to find a gunsmith to swap out that rear sight.
Not my monkeys, not my circus...
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Re: Beretta shoots low
[Re: Tactical Cowboy]
#7108680
03/12/18 02:01 PM
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BigPig
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Shooting a heavier bullet would raise the poi. Heavier bullets fall faster, right? Gravity? Travel slower, spend longer in the barrel, theoretically should hit higher because recoil should point the barrel higher. So in theory that would be the same for a rifle, right? Never had, or noticed, a heavier round shooting higher than a lighter weight round.
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Re: Beretta shoots low
[Re: 603Country]
#7108682
03/12/18 02:03 PM
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Joined: Oct 2009
Posts: 12,221
wp75169
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If you go ahead and buy a sight pusher and diy it will be yours to keep. Then you can change them out at will. A decent pusher will also work for many different guns.
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Re: Beretta shoots low
[Re: okie44]
#7108783
03/12/18 03:16 PM
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Joined: May 2007
Posts: 1,224
papa45
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Shooting a heavier bullet would raise the poi. Heavier bullets fall faster, right? Gravity? Travel slower, spend longer in the barrel, theoretically should hit higher because recoil should point the barrel higher. Heavier (or slower) bullet will impact higher. Several years ago, I was shooting a lot of .38/.357 in a 6" barreled revolver. Same 158 gr bullet in .38 would shoot higher than in .357, because of the lower velocity. After tinkering a bit, I found I could shoot a 125 gr bullet (higher velocity) in .38 that would impact the same as the .357/158 gr at 50 feet. I have not noticed the same behavior in rifles.
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Re: Beretta shoots low
[Re: 603Country]
#7109240
03/12/18 10:35 PM
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Joined: Jun 2015
Posts: 267
AZ_Hunter_2000
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What site picture are you using when you aim? Take a look at the info at the following: http://berettausa.custhelp.com/app/answers/detail/a_id/766/kw/sights/session/L3RpbWUvMTMzNDMwNDc4OS9zaWQvdlFpNnh3Vms%3D http://pistol-training.com/archives/1361Also, have you looked at a pistol correction chart to see if any of those items are coming into play? Changing to Beretta's recommended sight picture made a positive impact for me when shooting my PX4s and Nano.
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Re: Beretta shoots low
[Re: BigPig]
#7109453
03/13/18 01:46 AM
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Joined: Apr 2011
Posts: 988
okie44
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Shooting a heavier bullet would raise the poi. Heavier bullets fall faster, right? Gravity? Travel slower, spend longer in the barrel, theoretically should hit higher because recoil should point the barrel higher. So in theory that would be the same for a rifle, right? Never had, or noticed, a heavier round shooting higher than a lighter weight round. The recoil of a rifle is a bit different than that of a handgun. The handgun tends to roll up, rifle mostly straight back. When you get into the higher velocity stuff the shift is not as noticeable.
�The trouble ain't that there is too many fools, but that the lightning ain't distributed right.� Mark Twain
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Re: Beretta shoots low
[Re: 603Country]
#7110440
03/14/18 02:22 AM
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Joined: Jan 2009
Posts: 2,049
HicksHunter
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It's not because of recoil or the unlocking of the action. The time difference between bullets exiting a 3" barrel differing only by ~200fps or so is absolutely negligible.
The difference is because of the time it takes the bullet to reach the target, and where the target occurs within the bullet's path. All things held equal (spherical cow in a vacuum...), the bullets will reach the apex of their parabolic path at the same time, and fall to the ground at the same time. Exactly. However, the faster bullet will have traveled farther at any given point in time, so how does this impact ballistic zeroes with different weight bullets?
What we find is that at close ranges, the faster bullet will impact lower because it will have reached the target faster, and thus have completed less of its upwards travel to its apex.
Last edited by HicksHunter; 03/14/18 02:39 AM.
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Re: Beretta shoots low
[Re: 603Country]
#7112129
03/15/18 05:10 PM
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603Country
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Okie44 was right. Just did a bunch of shooting with 124 gr FMJ rounds, and the pistol is dead on. Heavier bullets were the trick.
Not my monkeys, not my circus...
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Re: Beretta shoots low
[Re: 603Country]
#7113308
03/16/18 03:20 PM
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Joined: Jan 2016
Posts: 7,759
snake oil
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Shoot low Sherriff he's riding a Shetland......
"You may all go to hell and I will go to Texas".
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Re: Beretta shoots low
[Re: 603Country]
#7113381
03/16/18 05:11 PM
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Joined: Jan 2011
Posts: 65,526
SnakeWrangler
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Okie44 was right. Just did a bunch of shooting with 124 gr FMJ rounds, and the pistol is dead on. Heavier bullets were the trick. So much for the file idea.... Glad you got it figured out....
I believe in science and I’m an insufferable [censored] Actually, BBC is pretty damn good "You Cannot Simultaneously Be Politically Correct And Intellectually Honest!"
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