RIA chrono & accuracy #9 + XTP

[fltbed]

Temp 60ish
Humidity 79%
Overcast
Elevation 1100ft

Barrel 5" factory
New Starline brass
Win LP primer
OAL 1.250

Hornady XTP 180 gr
I started with 13.4 and worked up in .02 gr increments to 14.0
13.4 & 13.6 were pretty erratic and I must have deleted the data but I recall velocities were low and ES & SD were high for #9

13.8 gr #9
Average velocity 1140
ES 29
SD 9

14.0 gr #9
Average velocity 1157
ES 21
SD 7

Hornady XTP 200 gr

12.4 gr #9
Average velocity 1094
ES 20
SD 6

12.6 gr #9
Average Velocity 1089
ES 21
SD 7

12.8 gr #9
Average velocity 1099
ES 20
SD 6
*One split case.

This tells me #9 works Best when compressed but is just a bit to slow for my barrel.  Adding more powder, getting closer to the Hornady manual max loads, resulted in just burning more powder with insignificant velocity increase.  Perhaps a good match grade barrel would improve those numbers but the accuracy wasn't bad.

50 yard target, sand bag rest, Hornady 180 gr.  40 rounds

50 yard target, sand bag rest, Hornady 200 gr  20 rounds 12.6-12.8 gr

20 yard target, off hand, Hornady 200 gr 8 rounds 12.4 gr


Jeff

[The_Shadow]

fltbed, Thanks for your range data.  Your results are very much like what I have experienced, never got to the claimed velocities with AA#9 neither the older microspheres or the newer flattened ball formulations.  It's not a bad powder it just takes so much to get the velocities up there.   

[fltbed]

I agree.  If my 6" Glock 40 ever shows up, I'll revisit #9 but for now, I'm working with Blue Dot, Power Pistol, BE-86 and eventually, Longshot.  We'll see.

[sqlbullet]

It is really hard to beat blue dot and longshot.

I loaded a good bit of #9 with 175 grain SWC a few years back.  14.7 grains gave me 1331 fps from a 1911, 1294 fps from a Witness full size and 1243 from a Glock 29.  No pressure signs at all.

But, dang those were expensive rounds when Blue Dot would nip at the heals with 50% less powder.