I can't comment on this subject but do recommend that you get a Mec-Gar magazine and preserve your original. It may function better and it will certainly take the pressure off that old wooden bottom.
Secondly, make certain that you are gripping the gun tightly shot to shot, not slacking up in anticipation of a stove-pipe.
The only difference I would know to look for on any ammo is the bullet weight (115, 124, 147 grain) and design, and the muzzle velocity.
But you've come to the right place.
dju
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