Oal Measurements

[arblacksmith]

I just received my Square Deal "B" reloader and I am trying to reload my ammo to an OAL of 1.272. Currently, the tolerances are plus or minus .003. How critical is these tolerances in terms of accuracy? I really like my Square Deal and the only problems that I have had is in the area of seating primers and I think I have that problem corrected.

[John Heiter]

Plus or minus three thousandths is WELL within tollerances. Of course you want everything as consistent as possible but I think you are fine with your current setup.

John

[Greg Jones]

I agree that +- .003 is acceptable, however I would want to make sure that the longer (1.275+) ammo still functions in your gun. At your goal of 1.272 OAL you are approaching the maximum length for the .45 ACP.

[G+16]

you will love your square deal , as for the primer make sure the machine is rock solid on the bench, and press forward firmly when seating primers, I had the same problem, good luck I load mine out 1.25 and it runs good in both my springfields (1911 style)

[robomanusa]

The SDB is a good press, its what I use. I seat my 45's anywhere from 1.240 - 1.260 depending on if LRN or Jacketed RN...you can easily get primers well below flush on a SDB.

During primer seating while on the handle upstroke you can feel when the primer just starts into the pocket, when it gets to that point I kinda use a quick snapping push to finish seating the primer and you can feel the primer bottom out in the pocket well below flush.

[GuildSF4]

Suggested OAL for .45 is 1.250. This lenght will normally feed well in any single stack or hi-cap .45. (Assuming the gun is set up correctly.) If OAL is 1.26 or higher it can get stuck in Para-Ord mags (and maybe STI).

[George]

1 and a quarter is the desireable OAL as GuildSF4 says. With the venerable .45 auto cartridge and it's generous case capacity, coupled with lower operating pressures, the OAL varying a little will not effect the velocity very much at all in comparison to a major 9 loading. As long as they are in a .01 range, you are good to go with the .45 ACP.

--

Regards,

[arblacksmith]

Plus or minus three thousandths is WELL within tollerances.  Of course you want everything as consistent as possible but I think you are fine with your current setup.

John

<{POST_SNAPBACK}>

John,

Until I become much more efficient, I measure each and everyone of my finished products to ensure I don't exceed the maximum OAL. I still have my rockchucker mounted to take care of such problems.

[arblacksmith]

The SDB is a good press, its what I use. I seat my 45's anywhere from 1.240 - 1.260 depending on if LRN or Jacketed RN...you can easily get primers well below flush on a SDB.

During primer seating while on the handle upstroke you can feel when the primer just starts into the pocket, when it gets to that point I kinda use a quick snapping push to finish seating the primer and you can feel the primer bottom out in the pocket well below flush.

<{POST_SNAPBACK}>

Roboman,

My bench is rock solid and your tip about seating the primer is much appreciated.

Lloyd

[robomanusa]

Your Welcome Lloyd, I've found that seating approach works best for me as I have to make sure all my 45acp primers are seated solid or my Revolver will not set the primers off.

I'm also fortunate that I have a 4year old automatic case feeder for my SDB, LOL ......she sits on my right and loves to load the casings in station 1 for me.

[ParaJoe]

1.25" is what I use because anything longer won't feed in the magazine correctly for some reason.