New Flattop shoots LOW
by Dave B 
, Alamogordo New Mexico, Sunday, October 16, 2016, 10:39 (2898 days ago)
With the rear sight raised uncomfortably high in elevation, the gun shoots to POA, with the rear sight where I am comfortable, it shoots several inches low. So, I have never filed a front sight on an adjustable sight revolver before, have to admit, I am a little scared of screwing it up, but it seems that short of sending it to someone for a lower front sight, this is my only option, other than living with the rear sight ridiculously high.
Dave
New Flattop shoots LOW
by Cherokee , Medina, Ohio, Sunday, October 16, 2016, 12:24 (2898 days ago) @ Dave B
File the front sight, just go slowly. I use a glass base with tape on the rear sight and the file under the front sight. Move gun back and forth keeping the rear sight flat against the glass. Should not take much.
Aim High.
New Flattop shoots LOW
by Fivegunner , LOWELL Mi., Sunday, October 16, 2016, 14:16 (2898 days ago) @ Dave B
How about a heaver bullet? or go a little faster?
Have new mold inbound
by Dave B , Alamogordo New Mexico, Monday, October 17, 2016, 09:48 (2897 days ago) @ Fivegunner
Going to try a 180gr bullet and some slower powder.
but first, what caliber and with what ammo?
by bj , Sunday, October 16, 2016, 21:24 (2898 days ago) @ Dave B
Lighter than normal bullets will make it shoot low. If you file the sight then it will shoot too high with normal ammunition. I've seen tests with .45Colt where changing bullets from light to heavy would make perhaps 5" difference at 25 yards.
Lightest 357 Mag I shoot
by Dave B , Alamogordo New Mexico, Monday, October 17, 2016, 09:51 (2897 days ago) @ bj
Is a 158gr JSP or XTP, most of what I shoot are 160gr 358156, and bullets from a 359640 MP mold, they are plain based and I don't push them as hard. I have an NOE mold that should drop a 180gr GC bullet, going to see how it does with 300-MP.
well 158 is average for the caliber
by bj , Monday, October 17, 2016, 19:41 (2897 days ago) @ Dave B
Or at least it used to be. I think a lot of ammo has moved to 125s. I've seen 170-200 grain bullets used for IHMSA and I've seen case SWCs that were about 170, but this isn't all that much higher than 158. If your hot loads and light loads still shoot low then you will have to file the front sight.
Filing a front sight, be sure you don't accidentally ding the rear sight, be careful that you file it evenly side to side, and don't take off too much. It will only take a tiny bit.
New Flattop shoots LOW
Ruger makes high rear sight blades that will cure your problem with only a minute swap out.
Ordered a high blade
by Dave B , Alamogordo New Mexico, Tuesday, October 18, 2016, 14:07 (2896 days ago) @ Charles
From Brownells, hopefully it fits!