Lyman Ohaus M5 scale

[Perraba]

I purchased a Lyman Ohaus M5 scale today from a local gun show. Appears to be in very good condition in the original box but I’m unable to get it to level. Even with the leveling screw turned all the way, still two marks high. My base is level and nothing appears bent. Any ideas???

 

[Shrek]

Pictures might help diagnose the issue.

 

[JFrank]

Might have a mixed matched pan, there are shot weights in the pan base that may need adjustment.

 

[Perraba]

Below are pics

 

[Perraba]

I adjusted shot weight in the pan base and now able to level scale out but 500 grain weight provided weighing at 245 grains.

 

[JFrank]

I adjusted shot weight in the pan base and now able to level scale out but 500 grain weight provided weighing at 245 grains.

They can vary, get a check weight closer to the charge area you normally work with.

 

[BeefyT11]

Look at the back of the supplied weight, it should show an actual weight. Both of mine are indicated as being 260.9 grains. I assume this to be standard. In my opinion what matters is having the scale level when the pan is zeroed. Adjust your pan hanger weight accordingly to achieve this. That way you don't have to rely on the height thumbscrew to zero the scale as much.

 

[Shrek]

Remember that repeatability is key not the absolute accuracy to standard. Build your load with the scale and always load with this scale. Consistency should be excellent and that is what matters.

 

[Infrequent Shooter]

your purchase is in great shape.

 

[centershot]

Got mine at a gun show many years ago. Did not know that it is one of the best beam scales our there. Love it.

 

[Perraba]

Sent mine off to Scott Parker for a tune-up and hopefully will get back soon.

 

[JFrank]

I have bought scales from Scott as well as sent mine to him for tuning beyond my capabilities, he does a great job at a fair price.

 

[oldeyes]

I also have an M5 from Scott - one kernel accuracy and with a Dandy Trickler it’s pretty fast —

 

[Tesoro]

Sent mine off to Scott Parker for a tune-up and hopefully will get back soon.

That made me laugh!!

 

[Tesoro]

You should hang you pan the other way as it is alot easier to r/r. Then balance it. Dont use that big weight. Use checkweights or if you dont have use dimes. Look up how much they weigh and zero it based on your powder load.

 

[6MMsteve]

I use a bullet for a wt sometimes they are a grain or +-2 but they work

 

[Tesoro]

oh shute..I just realized you said 500 grain weight!! it should be like 260 grains and have it printed. if not you have the wrong weight in kit. noone uses that big one anyway.

 

[Tesoro]

I use a bullet for a wt sometimes they are a grain or +-2 but they work

to check what if =/1 2 gr. ?

 

[6MMsteve]

to check what if =/1 2 gr. ?

I use a bullet to chk my scale for zero, so I know it's workin like it's supposed to I don't shoot enough or shoot comp to use the digital scales, but that could change here in a yr or so, I'm hoping it does so I can ramp up and start shooting in comp, with custom stuff

 

[cem]

I adjusted shot weight in the pan base and now able to level scale out but 500 grain weight provided weighing at 245 grains.

There is no 500 grain weight provided. There is a weight provided such that given the weight's distance from the pivot and the pan's distance from the pivot the beam will balance with an additional 500 grain in the pan. Leverage: "give me a place to stand and I could move the earth" As noted it's a fine scale. I'd take a good lens and look at the presumably agate bearing points and the steel pivot points. Folks use bullets and coins to check but check weights are cheap enough as might be a favor from your pharmacist, school lab or other friendly connection.