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Hi All,
I am handloading 230g 45 ACP(Westcoast plated bullets) with 5.1g of VV N230. This load is fired from a 1911 with a 5" barrel. According to my reload guide this should produce 833fps. Has anyone actually chrono is load? If so, what velocity are you getting?

Thank you

roa51200
 

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I personally feel N320 is a borderline fast powder for a 230 load. You have to be very careful with OAL in my experience. I will not use R-P cases with Viht 320 because of the potential for setback in a normal feeding cycle.

N330 or 340 make 835 and up with a much softer feel.

To answer your question, to make that speed with that load you would have to load a bit short, perhaps 1.225 or so. At 1.270 you would probably not quite make 800 FPS with 5.1 grains. I imagine that might be a bit sooty too.

Max load for Viht 320 under a 230 grain WC bullet is 5.5 at 1.270 OAL, loading shorter increases pressure. 320 burns very cleanly near max pressure.

I get 850FPS with a 230 West Coast RN projectile over 5.5 grains of Viht N320 loaded to 1.250 OAL which is rather snappy.

6 grains of Viht N330 generates the same velocity at that OAL but has a softer feel.

I prefer to use Viht 320 over a 200 grain round and run VV330 or 340 for the 230 grain rounds.
 

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I have loaded thousands of Precision 230 RN and FP over 5.1 of N320, and averaged 830fps. I load RNs to 1.265". The poly/moly coating might give slightly higher velocities than plain lead.
 

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N320 is comparable in speed to Titegroup. I've tried the following N320 loads in my 5" 1911:

.45ACP, 200gr PRN, VV-N320 5.1gr: 775 fps avg
.45ACP, 200gr PRN, VV-N320 5.5gr: 861 fps avg

The 200gr PRN is a West-Coast plated round nose. OAL is about 1.255".

N320 seems to have significantly more flash than Titegroup, as far as my eyes can tell.

My standard IPSC "Major" load is a 200gr PRN with 5.1gr Titegroup.

I've also tried approx 5.1-2gr N310 (yes, three-ten). This load shoots identically to the TG load, is marginally cleaner, and much more expensive.

-z
 

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I also find Titegroup to be roughly comparable to N320 in my 5" pistols in the 230 grain load.

(Data below measured using Federal cases, Fed 150 primer, Nowlin barrel, 18.5# recoil spring, SA Pro model 1911, Oehler 57 proof chrono, 70F at 3200 feet altitude)

WCB P-RN 230 Titegroup 4.4 1.255" OAL V=737.2 (170 PF)
WCB P-RN 230 VV-N320 4.7 1.270" OAL V=745.4 (171 PF)

Both loads generate a similar recoil impulse, about 0.81 lb/s. However, for some reason unknown to me, the N320 obturates the cartridge case better in my chambers and yields a cleaner burn.

For a 200 grain West Coast round nose, I get:

WCB P-RN 200 VV-N320 5.7 1.248" OAL V=855.65 (171 PF)

Note the influence of a relatively small OAL reduction (0.015") in this same load:

WCB P-RN 200 VV-N320 5.7 1.233" OAL V=889.3 (178 PF)

While I do not have the data readily at hand, I have found that a similar reduction in OAL with Titegroup yields a larger velocity change.
 
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