.45 ACP 230-gr Rainier CPRN with Accurate #2 Powder

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.45 ACP 230-gr Rainier CPRN with Accurate #2 Powder

Postby Morne » Sun Jan 15, 2017 5:17 pm

Meteorological Data: 33 F, 59% RH, 30.39" Hg

***CHRONY DATA***

.45 ACP 230-gr Rainier CPRN, WLP, Accurate #2 Powder, 1.261-1.275" COAL
Springfield XDS with 3.3" barrel five (5) shot strings each
4.6-gr powder - AVERAGE = 661 fps - ES = 40.7
4.9-gr powder - AVERAGE = 678 fps - ES = 25.5
5.2-gr powder - AVERAGE = 728 fps - ES = 34.8

That is a very nice, tight ES for the 4.9-gr load.
Thus spoke Zarathustra.

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Re: .45 ACP 230-gr Rainier CPRN with Accurate #2 Powder

Postby Sevens » Mon Jan 16, 2017 8:41 pm

Factory "established" 230gr Hardball load runs around 820fps, depending on who makes the ammo and your barrel length and platform. Nothing in the world wrong with making "what ya like", but keep in mind that if you get used to 230gr at sub-700 fps... a proper defense load from that little pistol is going to be a major wake-up call from what you may have gotten accustomed to. ;)
I like to swap brass... and I'm looking for .32 H&R Mag, .327 Fed Mag, .380 Auto and 10mm. If you have some and would like to swap for something else, send me a note!
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Re: .45 ACP 230-gr Rainier CPRN with Accurate #2 Powder

Postby Morne » Tue Jan 17, 2017 5:54 pm

Meteorological Data: 57 F, 69% RH, 29.81" Hg

***CHRONY DATA***

.45 ACP 230-gr Rainier CPRN, WLP, Accurate #2 Powder, 1.261-1.275" COAL
S&W 625 with 4" barrel
4.6-gr powder - AVERAGE = 701 fps - ES = 40.6
4.9-gr powder - AVERAGE = 727 fps - ES = 15.8
5.2-gr powder - AVERAGE = 764 fps - ES = 25.6

Chrony refused to read one (1) each of the five (5) shot strings for the lowest and highest charge weights.

Again, that is a very nice, tight ES for the 4.9-gr load. Since that was the string with all five (5) shots measured I dare say it's golden.

Interestingly, the highest charge weight (5.2-gr) had a real oddball low reading of 624.3 fps which I discarded. If you included it then the average for the 5.2-gr load is only 729 fps which makes no sense. <shrug>

That 4.9-gr load is a keeper. She behaves well in both a snubby semi-auto and an N-frame revolver. You can't really ask for much more than that.
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