New to forum.
Just got a new P5 magnum refurb. Great gun diesels a bit, groups well but shoots 1" high at 10 yards(basement renge) with rear sight in lowest position.

Breaking it in with kodiaks to seat seal faster. Will aim improve when dieseling stops? With out making front sight higher how can i get it to shoot at point of aim?

Thanks for any help in advance.

I have a p5 mag as well and you are the only one i have heard say that the pistol shoots high . The only complaint i have read about is the pistol shoots low . I even ground the fiber optic off the front sight to correct the problem. You are useing a very light pellet i believe which will exit the barrel higher than a heavier slower moveing pellet so you might try a heavier one. I use crosmans premiers 7.9 or even the heavy domes at 10.5 .I assume that the rear sight pin is seated on both sides of the holder well? And are you useing a 6 o clock sight picture hold on your target ? If not try that as well. Good luck Marvin

I tried kodiaks which weigh 10.5, superdomes 8.3 and gamo match all group with a 1/4" of each other. Before i bend the barrel will contact customer service. Some say heavier pellets are hard on spring.

Are you shooting free hand or on a rest and yes the diseling will cause great inaccracy ? Marvin

Tried both free hand and rested on end of grip on a rubber pad. Using a 6 o'clock hold shoots high under both conditions. Gamo match pellets give a tight .25 inch group and dieseling is getting less.

perhaps someone barrel whipped it. Not sure how they would have done that with the safety and all but I could see how that would cause it to shoot high.
A little tweak to the barrel would probably solve your problem I would think.
Mine was dead on at 10 yards and has plenty of adjustment for the longer ranges as well. Hope you get yours sorted as they are a very nice gun.

Russ S.

You might give it a chance to burn all the oil out and it might settle down . Marvin

Check the rear sight to see if there's anything you can do to make it seat lower. Might be able to remove some 'meat' somewhere with a Dremel or file. Don't have the same gun so have no specifics to offer.
You can superglue a small add-on to the front sight for a temporary fix and see if the gun settles down after a good break-in. I've used the fix on more than one gun to date with good results. Just be sure to degrease well before gluing and use much less glue than you imagine proper to get a good bond.
Make bending the barrel the very LAST choice after ALL other approaches are tried. Tom @ Buzzard Bluff

The screws that hold the rear sight on are silver soldered to the drum on the inside and can not be removed with out takeing the gun apart so what ever you do with it be care full . Marvin

Please don't read this the wrong way but I don't think that grinding or tacking on pieces is much of an alternative to bending the barrel back in line. The gun was designed to be used at 10 meters so it should be capable without increasing the height of the blade or removing material elsewhere. If this particular gun isn't capable of being adjusted on target at this distance, there is a reason.

I agree with shooting it, see if settles down a bit and then contacting the retailer. If these don't pan out, I would be looking at the barrel since this model has had problems with bent barrels in the past and as a refurb, who knows what was done to it before.

Just another .02 with nothing but the best intentions.

Russ S.

P.S. A lighter pellet combined with dieseling should hit low as I understand it. The pellet is leaving the barrel earlier in the recoil so the barrel wouldn't have risen as far. This seems to rule out dieseling in this case.
http://www.arld1.com/rifledynamicssmaller.html

I did not see the refurbish but i can tell you that when i called Umarex about the shooting low on mine they recomended bending the barrel which i opted to remove material from the front sight. I would quess and only a quess that they bent the barrel after takeing it back under warrenty. The reports that i have read as i stated earlyer have all stated a low shooter at all ranges . I believe that the fiber optic sight improvement on the magnum over the 5 is the issue .It just is not calibrated right to begin with and the bending of the barrel is a after thought fix .At this point im glade i made the decision i did . Hopefully it will strighten out for you . I know you have no warranty so if its any help when mine was a inch low i ended up removeing the opic and optic holder from the front and that put me right in the middle of my elevation adjustment. That might help you know about who high you would have to go. Marvin

I wonder if this is where they made the correction. Mine has the blade just behind the muzzle and it is dead nuts.

Just a guess.

Russ S.

My optic holder was in the front of the brake .When i talked to Glenn about it he never mentioned a different brake . I also looked at replaceing the break with either a 5 or a 6 brake but it was not a easly task . I belive he said that they had like a dove tail grove to line the break up on the barrel were as the magnun uses the set screws. Do you have a p5g magnum or a p5g. Marvin

Russ S.

Been running different pellets through gun and noticed rear sight was not level(left to right)

let's take this puppy apart and see if it's the leaf in the sight or the base. looks like one of the springs is bent and not seated fully. base is square with receiver and front sight. leaf is square also. straightened spring, a little grease on inside to keep rust away and put back together. looks straight now. rear sight adjusted low as it goes now shoots 3/4" low. adjust 3 clicks up and dead on. with gamo match rested shoots a ragged 1/2" hole.

We're more happy now. Thanks for all suggestions.

By the way if you don't have a good shooting pistol, you need one of these. Can't wait till grackles come back this spring.

Keep a eye one that rear sight mine wanted to move the pin from center to the right then after several adjustment it is staying put. Marvin

now you get to enjoy shooting it!

Have fun.

Russ S.