I've got 5lbs of WST to use, and I was hoping to find a good mild load to put me just over the "major" threshold for USPSA in 10mm. I've got mostly 165fmj and a few hundred 135gr.

I found this data (apparently in an old manual)

WST -----------------------------MAX FPS
150gr JHP 5.5 to 7.0 34,000 1190
155gr JHP 5.0 to 8.0 31,900 1220
170gr lead 5.0 32,100 1020
170gr JHP 4.5 to 5.5 29,500 1020
180gr JHP 5.0 to 5.5 35,200 1010
190gr FMJ 4.5 26,700 850
200gr lead 3.8 to 5.0 32,400 940
200gr FMJ 4.6 35,600 890

Data reproduced from 14th edition Winchester Reloading Manual
Usual reloading precautions and disclaimers apply

And the following from handloads.com

150gr JHP 7.0 gr WST 1,190 fps Winchester
Suggested starting load: 6.3 gr
Pressure: 34,000 PSI


155gr JHP 8.0 gr WST 1,220 fps Winchester
Suggested starting load: 7.2 gr
Pressure: 31,900 PSI

170gr JHP 5.5 gr WST 1,020 fps Winchester
Suggested starting load: 5.0 gr
Pressure: 29,500 PSI

180gr JHP 5.5 gr WST 1,010 fps Winchester
Suggested starting load: 5.0 gr
Pressure: 35,200 PSI


200gr Lead 5.0 gr WST 940 fps Winchester
Suggested starting load: 4.5 gr
Pressure: 32,400 PSI

Looks like it's probably from the manual too.

Posted partially for my own notekeeping. I hope to get started on this soon!

 

Through the Gen4 Glock 20 (stock)

A chilly 20 degrees outside, but sunny.

(1x PMC, FED LP) 180gr PD FMJ, 5.2gr WST @ 1.250": 874 fps avg (19 fps ES)

(1x PMC, FED LP) 180gr PD FMJ, 5.5gr WST @ 1.250": 966 fps avg (10 fps ES)

 

Thanks for posting SD.

 

I continue to be amazed with the versatility of the big G20. On the top end, I've seen 850 lb/ft of average muzzle energy. Now on the other end of the spectrum, a new low of 250 lb/ft. No modifications. Box stock gun. I can't think of another gun that can cover such a broad spectrum of ammo right out of the box. Kudos to Glock.

The load data is:

Bullet: Leatherhead 180 gr RNFP Hi-Tek coated cast bullet
Powder: Winchester 452AA (now obsolete, superseded by WST).
Primer: CCI 300
1.25" COL
Mixed Cases
80F

Velocities below are averages

5.0 gr 790 fps; 10.1 std dev; 142 pf; ME 250 ft/lb
5.2 gr 831 fps; 8.1 std dev; 150 pf; ME 276 ft/lb
5.4 gr 864 fps; 7.6 std dev; 156 pf; ME 298 ft/lb

All cycled fine and grouped extremely well. This was a stupidly soft shooting load. I'm going to experiment some more and this will make it into the IDPA rotation.

WST load data is said to be VERY close to 452AA, so this data should have some crossover relevance to WST .

 

A bit more data from the land of "how slow can it go?"

This time with a 200 grain Precision Delta FMJ. All cycled perfectly in the Gen 3 G20. Stock RSA and barrel, and set some new personal "best lows" for PF and ME in the G20. I worked this up based loosely on old Win WST data. (452AA was replaced by WST, and have similar burn properties).

Mixed cases (mostly Starline)
CCI 300s
1.25"
Winchester 452AA (1970s era)
65F

4.3 gr
ave velocity: 669
ME: 198 (yes, folks, a 10mm energy calculation that starts with a "1")
PF: 134

Brass for this round dropped right near my feet. That tells me it is barely cycling. But it did cycle, and groups were very good.

4.5 gr

ave velocity: 695
ME: 215
PF: 139

This will be the round that I'll take to the next IDPA match. This is a ridiculously soft recoiling round. Brass ejected a bit farther, but still close. Probably a bit more margin for positive cycling. Groups were very good.

4.7 gr

ave velocity: 722
ME: 231
PF: 144

Good function. Good groups. This would be a serviceable too.

For a lot of you this is probably yaaawwwwwwnnnnn data. I get it. I have spent a bunch of time plying the upper end of 10mm velocities. We know that this is very versatile cartridge, but I've been interested in the full range of capabilities: low and high. Plus I inherited a hefty supply of 452AA, and I've been looking for excuses to burn it up.

This will likely be where I stop on the low end though. The ME range out if my G20 has been 198 to 866. I'm not sure of another auto-loading service cartridge that will cover that much territory!

A note about the bullet. Unlike many of the 180 gr FMJs that I've measured from Precision Delta, the 200s were sized at 0.400 on the nose. The 180s have tended to be slightly undersized, so these seemed to noticeably group better than the 180s.

 

Hello everyone. I made some 10mm loads using Win AutoComp. Test gun was G29 Gen4. Here are the numbers:

Powder Charge: 7.2gn
Bullet: Berrys Plated 165gn FP
Avg velocity: 934fps

Powder Charge: 7.6gn
Bullet: Berrys Plated 165gn FP
Avg velocity: 1006fps

Powder Charge: 8.0gn
Bullet: Berrys Plated 165gn FP
Avg velocity: 1052ps

Powder Charge: 7.2gn
Bullet: Hornady FMJ 180gn FP
Avg velocity: 1015fps

Powder Charge: 7.6gn
Bullet: Hornady FMJ 180gn FP
Avg velocity: 1052fps

Good powder for plinking. No flash at all.