Scientific Mud/ Dirt Test
I am a huge fan of the Model 10 and its Cousin the Model 64.
I like dedicated .38spls. Oh I am a big fan of K frame revolvers, be they .22, to .357, still the dedicated Model 10/ 64 are proven.
SM/D Test is something I was Mentored about in the '50's. I was born in '55, and I recall this test the first time. Seems these folks been doing it forever. Even checking Blackpowder loads...way back when...
Many on this board, folks you all have read reviews by, and have done business also know of this Test, and have mentioned as I have, and am about to again.
Shoot dirt.
Mentors kept it simple, fill a box with dirt/ mud , shoot, and from the top of box, recover bullets, buckshot, slugs, whatever.
Make a note of all pertinent information. Gun, factory ammo/ reload data, distance...etc. Keep the bullet and label it.
I have used a Model 10 to shoot critters for instance. Recover bullet. Look up notes, and it is amazing how close and similar the Scientific Mud/ Dirt Test Bullet replicates the one recovered from a critter.
I have compared with meat, that went bad due to loss of power, shot hams, roasts, side of beef...and that was a busy day , shooting and making notes, tagging bullets, pellets and slugs.
I have also shot vehicles, from outside into - and from inside out of. Doors, windshields , etc.
Mentors said back when, repeated since , still applicable.
"One must test their gun with ammo to know. Best to have a easy method to test and make notes to refer back to".
I believe in the Model 10, the dedicated .38spls, and in keeping it simple when it comes to me testing, and having comparisons for me to conduct.
I appreciate and respect all the time, money and efforts other folks do and share - still I need to have a way I can test for me.
One person that does the SM/D test, makes ammo, and sells it.
We have used simple cardboard boxes, Wood "coffins" out of discarded furniture, like dressers on backsides filled with dirt/ mud, dresser drawers themselves, made wooden "coffins" with scrap wood , to using 55 gal and smaller drums, on their side, side cut out.
Anything as a front to keep dirt in. We can put a pane of glass, drywall, denim, you name it in front to check penetration and deflection.
Glass does interesting things to bullets.
HTH
Steve