Lyman M5 & Ohaus 10-10 thoughts

[Stud Duck]

I have an RCBS/Ohaus 10-10 scale on the way and the option to purchase a Lyman M5 scale that was made by Ohaus for a back-up.

I've read the Lyman M5 scales are probably the most sensitive beam scales for reloading; true or internet chatter?

The M5 lacks the rotary-barrel style poise that is found on the 10-10; which system is more accurate and what are the pros/cons of each system?

Thanks for the education.

 

[dedogs]

which system is more accurate and what are the pros/cons of each system?

This seems like a good question for Scott Parker, the beam-scale guru here. I would PM him. (Might take a little while to get a reply... or not) His tuned scales come back VERY sensitive. dedogs

 

[retired]

either is fine for reloading hunting and plinking ammo. if you get serious about accuracy
you will eventually buy something that is closer to .02/.01, not the .1 of a beam

 

[Evlshnngns]

I really like my M5! I would like to know what Scott would buy given his experience.

 

[hoz53]

I have an RCBS/Ohaus 10-10 scale on the way and the option to purchase a Lyman M5 scale that was made by Ohaus for a back-up.

I've read the Lyman M5 scales are probably the most sensitive beam scales for reloading; true or internet chatter?

The M5 lacks the rotary-barrel style poise that is found on the 10-10; which system is more accurate and what are the pros/cons of each system?

Thanks for the education.

I use the M5 and you really have to be careful with the small poise jumping around easily to a different spot and not noticing it. I had a 10-10 first though and now use a M5

 

[sparker]

I really like my M5! I would like to know what Scott would buy given his experience.

I use a Redding. I use a Redding as I don't really care about linearity. All I use it for is weighing powder charges in the range of 26 grains to 47 grains. The linearity of the Redding in that range is good enough. However, most Reddings start to read heavy after 150 grains and are typically reading high by .1% for every 100 grains beyond.

M5s are in my opinion the best scales all things considered. They consistently tune up to have the best linearity. They consistently tune to single kernel sensitivity. They repeat. D5s use the same beam and bearings as do the red Ohaus 505s.

10-10s often have issues. The "micrometer poise" feature on 10-10s is a gimmick. The threads are subject to backlash. The v-notches are often too large to be a good fit for the set washer on the rear of the main poise. That said, when they are right, they can be among the fastest scales to load with.

RCBS when they were still in Oroville CA made a scale very similar to the Redding. I recently tuned and calibrated one of these and shipped
it to a customer. I would have dearly loved to have kept that scale. It was as sensitive as my Redding but dampened out almost instantly. I will keep the next one that shares those same properties.

Scott Parker

 

[watercam]

Thank you Scott! Very informative!

 

[hoz53]

I use a Redding. I use a Redding as I don't really care about linearity. All I use it for is weighing powder charges in the range of 26 grains to 47 grains. The linearity of the Redding in that range is good enough. However, most Reddings start to read heavy after 150 grains and are typically reading high by .1% for every 100 grains beyond.

M5s are in my opinion the best scales all things considered. They consistently tune up to have the best linearity. They consistently tune to single kernel sensitivity. They repeat. D5s use the same beam and bearings as do the red Ohaus 505s.

10-10s often have issues. The "micrometer poise" feature on 10-10s is a gimmick. The threads are subject to backlash. The v-notches are often too large to be a good fit for the set washer on the rear of the main poise. That said, when they are right, they can be among the fastest scales to load with.

RCBS when they were still in Oroville CA made a scale very similar to the Redding. I recently tuned and calibrated one of these and shipped
it to a customer. I would have dearly loved to have kept that scale. It was as sensitive as my Redding but dampened out almost instantly. I will keep the next one that shares those same properties.

Scott Parker

Thanks Scott for that info

 

[Cdog0803]

I use a Redding. I use a Redding as I don't really care about linearity. All I use it for is weighing powder charges in the range of 26 grains to 47 grains. The linearity of the Redding in that range is good enough. However, most Reddings start to read heavy after 150 grains and are typically reading high by .1% for every 100 grains beyond.

M5s are in my opinion the best scales all things considered. They consistently tune up to have the best linearity. They consistently tune to single kernel sensitivity. They repeat. D5s use the same beam and bearings as do the red Ohaus 505s.

10-10s often have issues. The "micrometer poise" feature on 10-10s is a gimmick. The threads are subject to backlash. The v-notches are often too large to be a good fit for the set washer on the rear of the main poise. That said, when they are right, they can be among the fastest scales to load with.

RCBS when they were still in Oroville CA made a scale very similar to the Redding. I recently tuned and calibrated one of these and shipped
it to a customer. I would have dearly loved to have kept that scale. It was as sensitive as my Redding but dampened out almost instantly. I will keep the next one that shares those same properties.

Scott Parker

What was the model # of the RCBS scale that you favored? Thanks!

 

[Timnichols]

I have a m5 that is reading way off I need to get it worked on my Scott if he will.

 

[R.Morehouse]

I have an M-5 that i got from Scott a few years back and i use it to make sure my FX-120 set up isn't drifting at all ( It has not drifted at all.....But....Yeah, I'm one of them... ). I have 2 of Scott's tuned scales here and they are a precision piece of equip.

Regards
Rick

 

[JimSC]

I have a M5 I love. I did the pointer mod and use a webcam and it will return to zero every time. I clean the knives and the bearings with alcohol before every use and can see the pointer move with a kernel of Varget. It is a bit slower to use than a electronic so like R.Morehouse I use it to keep my electronics honest. I randomly check my loads on the electronic against the beam and the beam has the final say. Never owned a 10-10 but I do have a RCBS 5-0-2 and it is always spot on but I might give the Lyman a very slight edge on sensitivity but the result is minor

 

[1066]

I've got several - my favourites are Lyman M5, RCBS 5-10 and the old Hornady/Pacific "M" type.
Here's my M5 earning it's keep:

 

[INTJ]

When I got my Sartoruis Entris 128 earlier this year I checked my 10-10. Five weighed loads had .09 grain variance. I used the 10-10 a dozen years ago to load a 300 WSM for 1000 yd BR and it did well. That said, the Sartorius or FXI with an Auto Throw/Auto Tricker is much faster and even more accurate.

 

[danny]

The 10•10 is a great scale, but the M5/10•0•5 is probably the best. I find it more difficult to adjust the tenths on the 10•10 and be gentle on the knife edges/bearings than on an M5.

Danny

 

[swadiver]

I have the Ohaus 10-0-5 mint from 1971. it was "Parkerized". i also use the pencil lead application mod on the knife edges, courtesy of BoydAllen. it's pretty amazing on it's repeatability. inexpensive web cam hooked up to a tablet, small sewing needle glued to the poise, allows one piece of LT-32 (very small kernels) to be seen move the pointer. i use the Ohaus in conjunction with an FX-120i, and it tells me just how good the old Ohaus is

 

[truck driver]

I found this still in the box left over from a deal I ran across at a shooting flea market are they any good?

 

[sparker]

I found this still in the box left over from a deal I ran across at a shooting flea market are they any good?

No! Three poise scales have repeatability issues.

 

[truck driver]

I knew there was some reason it was still on the self and in the box unopened.
Thanks for the info

 

[K9TXS]

What scale should I be looking at today since the Lyman M5 is no longer in production?