I hope you are considering purchasing all three after the amount of times I posted this isnt a shopping thread...

S&W 327 TRR8 - SKU 170269
$1089 plus GET, No ETA unfortunately

S&W M&P R8 - SKU 170292
$1063 plus GET, No ETA unfortunately

S&W 629 V-Comp - SKU 170137
$1299 plus GET (in stock, save $100)

All prices only good for 24 hours

OK, so there's a company out there (GZ forgets which one of the top of GZ's head right now) that breaks bullets into 5 bullet sets.  5 bullets of differing types so that you can load them to test out.

In general you should start with bullet weights that are optimal to your barrel length/twist rate............that's easy enough to get off the net.  What will be tough is settling on the the powder to use and how much of it.  Add to this the fact that (especially SS barrels) you can see a break in.  GZ didn't believe in this, but buying a 1:7 barrel for use with 70+gr bullets (for .223 Rem) and seeing 55+ 62 gr outperform that weight in the beginning was very interesting.  Seeing it start to go away quite quickly from the 55 to the heavier weights also made GZ sad...........GZ hasn't had the patience to work up data since then.

Anywhooo...............I GZ's humble opinion Mr. Fartknocker should look for that company and primarily focus on using consistent loads at first possibly with a chronograph to make sure the variances in impact aren't due to velocity spikes before Mr. Fartknocker starts to eliminate loads.  Bad thing is Mr. Fartknocker will probably buy a crap load of powder that Mr. Fartknocker might not want to use more of in the future..........