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Here are sizes pulled up from another website; Shotgunworld.com • User Generated Ponsness-Warren bushing SIZE chart

Sizes listed below are expressed in inches
These in black were measured by me and I have no question about the sizes that I got.Wobbly1 furnished these measured sizes, Measured by J Hoss The ones in this color were furnished by JM423
1A=.270
2A=285
3A=.297 .285
B=.314
C=.322
C1=.329
D=.340 .332
D1=.341
E=.355, .360
E1=.380 .367
E2=.372 .379
F=.388 .380
G=.412 .410
G1=.4145 .414
H=.422 .435.428.429
I=.4365 .435
J=.437 .445 .444
J1=.443 .451 .449
K=.446 .458.452
L=.457 .464.462
M=.470 .4765 .475
N=.484
O=.486
Q=.497
R=.507
SO AS WE GET DATA, LETS ADD IT INTO THIS LIST! Since I have never seen sizes for their bushings, lets make one for ourselves. That way the P-W users can see what Hornady and RCBS bushings will replace and fit into the gaps in the PW charts. Please measure as closely as you can. Accuracy is usually a good thing.
Who knows, it may end up in the FAQ section at the top of the forum. Too bad most folks do not check in there for data

Sizes furnished by Wobbly1 as per specs. I see that there is some difference in all the ones that I measured as compared to the specs. So now there is a mystery. Maybe there has been a spec change since the bushings that I measured were made(1993)
F ----- 0.3800"
F1 ---- 0.3850"
F2 ---- 0.3950"
G ----- 0.4125"
G1 ---- 0.4155"
H ----- 0.4290"
I ----- 0.4365"
J ----- 0.4450"
J1 ---- 0.4515"
K ----- 0.4545"
L ------ 0.4645"
M ----- 0.4775"
N ----- 0.4925"
O ----- 0.4955"
P ----- 0.5300"
Q ----- 0.5045"
R ----- 0.5150"
Sizes that I measured
#4 ---- 0.5600" -- 7/8 oz. .554
#5 ---- 0.6050" -- 1 oz. .596
#5.5 -- 0.6190" -- 1 1/16 oz. .614
#6 ---- 0.6460" -- 1 1/8 oz. .632
#7 ---- 0.6800" -- 1 1/4 oz.
#8 ---- 0.7130" -- 1 3/8 oz.

1/2 oz. = .428
5/8 = .479
11/16 = .502
3/4 = .534
7/8 = .564
1 = .600 measured from P-W #5 bushing
1 1/8 = .636 measured from P-W #6
1 1/4 = .676 measured from P-W #7
1 3/8 = .710
1 1/2 = .749 measured from P-W #9
 

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This is great information. Does anyone have a chart with IDs for Mec bushings?
MEC bushing - ID's
10 -.263
11 -.272
12 -.279
12A -.287
13 -.295
13A -.303
14 -.310
15 -.318
16 -.326
17 -.334
18 -.341
19 -.349
20 -.357
21 -.364
22 -.373
23 -.380
24 -.388
25 -.396
26 -.403
27 -.411
28 -.419
29 -.427
30 -.435
31 -.442
32 -.450
33 -.458
34 -.466
35 -.473
36 -.481
37 -.489
38 -.497
38A -.504
39 -.512
39A -.520
40 -.527
40A -.536
41 -.543
41A -.551
42 -.559
42A -.566
43 -.574
43A -.582
44 -.590
44A -.597
45 -.605
45A -.613
46 -.621

MG
 

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Discussion Starter #10
3200900T, A reference is just was I was looking for. I measured my bushing and it was .441 for a half oz. should have been about . 427 or .428. I changed and it fixed my problem.
Thanks to those who shared it.
 
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