…
The 135 GD was optimized for 2" and shorter barrels. Just curious why you’d use it in a 4" when there are plenty of good loads developed for that length.
As to your question, I haven’t seen any 135 practice loads.
POI, felt recoil? Both?
There are Speer/CCI 130 balls loads that approximate the GDHP in snubs. Also, a Federal AE round that is much milder but hits to the same POI.
…