For what it's worth, here is another SPP comparison. 9mm with 4.5 gr. VV N320 powder, 115 gr. FMJ pulled but sorted for length bullets, all once fired Win cases. Gun is M&P 4.25" APEX barrel, APEX trigger, RMR sight. 2x5 shot group average (also measured as 1x10 shot group), bag rested, 25 yd.
Where I had earlier results for an identical load, I included those in parentheses to show how results varied. (~3rd range session since, so probably time for a good cleaning!
.)
VVN320 with Fed 100 was pretty good this loading/testing, as was my previous time, coming close to my most accurate load with 115 gr bullets. Gives me a couple of decent 115 gr. FMJ loads, with flexibility to use different powder/primer & a slightly milder load.
Fiocchi again was the slightly lower V, slightly higher std. dev load.
Use Up or Drought Scenario: Won't pursue further a Fiocchi 115 gr load. More likely R 6 1/2 for a "use up" load. [But separately, I bumped the powder up slightly for my Fiocchi/W572 147 gr load reported previously and got 2nd best grouping compared to CCI/Power Pistol. So if I got into a primer bind, that 147 gr load is where I would use my Fiocchi inventory. (Fiocchi still had high teens std. dev. though.)]
Sidenote: I had my LabRadar setup. A guy came by with a Garmin and wanted to compare results with them. Over several shots, results were essentially the same, differing by only a consistent 2-3 fps lower velocity measured with the Garmin for a load that was ~ 970 fps. And the Garmin did seem to be significantly easier to use i.e. much less sensitive to line up issues.
Where I had earlier results for an identical load, I included those in parentheses to show how results varied. (~3rd range session since, so probably time for a good cleaning!
.)| Primer | V 10 shot | Std Dev 10 shot | 2x5 shot groups | 1x10 shot group |
| Fiocchi | 1144 | 12.2 | 3.3" | 4.9" |
| Rem 6 1/2 | 1166 | 8.1 (7.2, 12.3) | 3.7" (2.5, 3.4) | 4.2" |
| Fed 100 | 1167 | 8.3 (9.0) | 3.0" (3.0) | 3.4" |
| Shot For Reference Prev. Best Load w/ same bullet: 5.9 gr Power Pistol CCI 500 primer | 1199 | 11.8 (22.8, 15.8) | 2.4" (1.8, 2.0) | 3.6" |
VVN320 with Fed 100 was pretty good this loading/testing, as was my previous time, coming close to my most accurate load with 115 gr bullets. Gives me a couple of decent 115 gr. FMJ loads, with flexibility to use different powder/primer & a slightly milder load.
Fiocchi again was the slightly lower V, slightly higher std. dev load.
Use Up or Drought Scenario: Won't pursue further a Fiocchi 115 gr load. More likely R 6 1/2 for a "use up" load. [But separately, I bumped the powder up slightly for my Fiocchi/W572 147 gr load reported previously and got 2nd best grouping compared to CCI/Power Pistol. So if I got into a primer bind, that 147 gr load is where I would use my Fiocchi inventory. (Fiocchi still had high teens std. dev. though.)]
Sidenote: I had my LabRadar setup. A guy came by with a Garmin and wanted to compare results with them. Over several shots, results were essentially the same, differing by only a consistent 2-3 fps lower velocity measured with the Garmin for a load that was ~ 970 fps. And the Garmin did seem to be significantly easier to use i.e. much less sensitive to line up issues.
