Gil's advice on wad pressures greatly helped me develop consistent loads, but there are other things that can happen with fiber wads that might surprise you. The idea that you can add a few extra grains and substitute just any old fiber for plastic is really misleading and potentially dangerous.

For example, here are two loads, but using 21 grs of American Select, and identical shot loads (7/8 oz), and hulls, but different fiber wads tested on the same day by Precision Reloading.

fps pressure
1292 8820
1320 10410
1344 12140
1356 12060
1368 1140

The second load
1312 9170
1423 18080
1339 12850
1373 13230
1369 12950

The second load is well over SAAMI and not the sort of thing you would want to stick in an English 2" gun. The first load is too hot as well, but not nearly like the second.

Also, these were shot in a 3" test gun. Another no-no for really learning what a 2" fiber wad load will do.

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BrentD, (Professor - just for Stan)

[Linked Image from i.imgur.com]