Morning Fellas, here is the conundrum; I, just like the countless numbers of you out there, suffer from the shooters dreaded affliction named "tinkeritis". Here is some background for your pondering:
7.82 Lazzeroni Patriot
Rem 700 SA- LH of course
Factory Sendero contour BBL (rechambered w/brake)
Reworked Rem trigger (old style)
LongRifles Inc fire control (Pin, spring & cocking assy)
MK4 pic rail... yada yada
Now, my go to load for the last several years was a 150 TSX & 71.5 grns of RL-19 w/ FED 215M for a very nominal velocity of ~3200 which is very slow I know, however ES & SD are both single digits & this combo is quite capable of putting 5 rounds in a ragged hole the size of your thumb nail...
So, now we've decided we need MORE SPEED!! I decide to lose the very effective yet ballistically challenged 150 TSX in exchange for the more versatile 168 TTSX and ditch the old stanby RL-19 (Lazzeroni loves this stuff) in favor of the newer and shinier "Specifically for the Short Magnum.." RL-17. I of course cannot find any kind of data for a Lazzeroni & RL-17, so I pull data for a 300WSM as the WSM is longer & the Lazz' is fatter, I guesstimate that capacity is very similar (correct me if I am wrong).
So here is a short preface as I worked my way north:
Lazzeroni Brass (I don't know who actually makes it)
Barnes 168 TTSX
~.050 jump (IIRC)
90deg 4500' ele. 100yds
3 shot groups for pressure checks & accy potential
66.0- Poor accuracy no pressure
66.5- Accuracy improved no pressure
67.0- Well under MOA little sticky, no ejector mark or flat primer
67.5- Good accy, bolt sticky, no ejector mark or flat primer *Maximum* for me
Load 4 more & Check accy @ 67.0:
Good accy, 1 flyer?? (difference discovered in brass like new manufacturer or something??)
Clean & Load 10 for 5 shot groups @ 67.0:
Good accy & repeatable
Load 5 more for accy & pressure checks w/ Chrono:
THIS is the whole point behind my post, I am absolutely baffled. Chrono shows a 5 shot avg velocity of 3441fps
with a 168grn bullet!? Holy crap! I know pressure is getting close to max, but worked up at 90degrees everything is hotter than the blazes...
So for those of you who use RL-17: Is this normal? I'm WELL aware of the old addage, "if something seems too good to be true.." but I've tried to prove myself wrong... 20-30 rounds of proofing on the same brass to again, detect pressure problems before ruining brass that is over $2.00ea.
So what are your thoughts? I cannot find anything wrong with my findings, I will be reloading the last 5 cases again (4th or 5th loading) to verify velocity again this week (I hope).