How I measure seating force with Forster Co Ax Press

[Bginvestor]

I love my forster press, but the only thing I didn't like was not having the ability to measure seating force. Well, I think I found a solution. I attached a torque wrench to the armature. Torque is directly related seating force.

I've tested with 1.5 to 3 mil neck tension, I get a ~30 % difference in torque value. That's enough fidelity to screen out the outliers.

Thought I'd share..

I'm using a .9 to 18 ft-lb torque wrench..

 

[chromatica]

What are your torque readings for .0015 and .003 in neck tension?

 

[Bginvestor]

What are your torque readings for .0015 and .003 in neck tension?

hey, for the .003 neck tension, I was recording around 27 in-lb.. (not ft-lb)

 

[6MT]

One of the greatest things about the Co-Ax is the feel. (And free floating.)

After you get accustomed to seating, it becomes art. Gauges...? I don’t need no stink’n gauges.

sorry

 

[Bginvestor]

One of the greatest things about the Co-Ax is the feel. (And free floating.)

After you get accustomed to seating, it becomes art. Gauges...? I don’t need no stink’n gauges.

sorry

well, if your elbow is calibrated to +/- .5 lb, you should be fine! LOL

gotta love the co-ax, one of the best presses out there..

 

[Bginvestor]

Here's an example of using the torque wrench on the Co-ax. These measurements came from a fresh batch of annealed brass from the 284 win using .002" tension.

I was able to screen out the outliers, trying to keep ammo in consistent groups. I'm in the process of collecting range data to determine how the outliers (in terms of seating force) shoots.

I did find one round that measured at 40 in-lb that was definitely out family. No idea why. I'm convinced that if I let that one go in a match, I probably wouldn't be happy with the results at 1000 yards.

Happy shooting..

 

[6ShotsOr5?]

Since you are measuring do you think the peak torque depends on how fast you are moving the arm?

 

[Ranger007]

I love my forster press, but the only thing I didn't like was not having the ability to measure seating force. Well, I think I found a solution. I attached a torque wrench to the armature. Torque is directly related seating force.

I've tested with 1.5 to 3 mil neck tension, I get a ~30 % difference in torque value. That's enough fidelity to screen out the outliers.

Thought I'd share..

I'm using a .9 to 18 ft-lb torque wrench..


View attachment 1208995

BRILLIANT!!! Very, very interested in a You Tube or video of it in action.

 

[CharlieNC]

Here's an example of using the torque wrench on the Co-ax. These measurements came from a fresh batch of annealed brass from the 284 win using .002" tension.

I was able to screen out the outliers, trying to keep ammo in consistent groups. I'm in the process of collecting range data to determine how the outliers (in terms of seating force) shoots.

I did find one round that measured at 40 in-lb that was definitely out family. No idea why. I'm convinced that if I let that one go in a match, I probably wouldn't be happy with the results at 1000 yards.

Happy shooting..

View attachment 1210303

Please report the range results when available. I have done little to advance my brass prep results in this aspect, and could use some motivation to do so.

 

[Capt. Oblivious]

Thats a very cool idea

 

[HillBillyPirate]

Genius! What torque wrench is that?

 

[Bginvestor]

BRILLIANT!!! Very, very interested in a You Tube or video of it in action.

Just for you Ranger!

 

[Ranger007]

Just for you Ranger!

Geessssss TY very, very much Bginvestor I really appreciate it. Answered all of my questions. I and going to set one of my Forster’s up.

 

[Capt. Oblivious]

What wrench are you using?

 

[Bginvestor]

What wrench are you using?

you want a low torque range.. this one is working for me..

1/4 Inch Driver Auto Bicycle Bike Digital Torque Wrench Repair Tool - Electronic Wrench - 1.25 to 25Nm or 0.92 ft-lbs to 18.4 ft-lbs

by cyclingdeal_usa

Learn more: https://www.amazon.com/dp/B00IFWTIOO/?tag=accuratescom-20

 

[Capt. Oblivious]

you want a low torque range.. this one is working for me..

1/4 Inch Driver Auto Bicycle Bike Digital Torque Wrench Repair Tool - Electronic Wrench - 1.25 to 25Nm or 0.92 ft-lbs to 18.4 ft-lbs

by cyclingdeal_usa

Learn more: https://www.amazon.com/dp/B00IFWTIOO/?tag=accuratescom-20

Thanks Allot

 

[Bginvestor]

if anyone trys, post ur findings!

 

[Bginvestor]

Using a drill press and a little marine-tex, I've retro fitted an adapter. Works well. Now I've got both Forster and this press using the torque wrench!!

 

[Cecil S.]

Following this.......nice job.

 

[Uncle Ed]

I tried a torque wrench on my Rockchucker but the string and duct tape kept breaking.