Notes on the 32 mag, 327 Fed, and 32-20. SP101

[Fowler]

May 21, 2023 14:41:48 GMT -5 bigbore5 said:

Here's what I got:

Ruger SSM 9-1/2"
RCBS 32-98SWC
WSPM primers
Starline 32 H&R mag brass (new)
84°, 92% humidity

#9 powder, 10.0gr

1522
1551
1534
1529
1533
1512

Avg= 1530fps
ES= 39fps


H110, 11.8gr

1478
1504
1466
1497
1456
1473

Avg= 1479fps
ES= 48fps.


A word of note. The #9 load is max in my gun. Never try either of these loads in anything not as strong as a Single Six Magnum. Reduce loads and work up slowly.



I usually use a load of 10grs 4227 with this bullet for 1365fps. Gotta love the longer barrels for velocity.

You might try the same loads with standard pistol primers. I was having erratic ES reading in my 327s and read a Brian Pearce article stating standard primers would reduce the variance since you have a small, narrow cavity and are not trying to light very much powder and I found my velocity variances were cut in half.

Your results may vary but worth trying a handful of.

[bigbore5]

I've tried standard primers and usually use them. But H110 has a lower ES with the magnum.

To keep everything except the powder the exact same, I used magnum primers in both, but usually used CCI 500 with the #9, getting basically the same results as with the magnum primers.

[seminolewind]

Very consistent results as expected. Thanks for the time and effort put into this.

[bigbore5]

I'm thinking about doing the same thing with some other cartridges. Mostly curious about #9 compared to H110 in the 45Colt. But all my 45's are short barreled.

Time to start shopping!

[seminolewind]

I haven’t tried #9 in 45 Colt, but I have compared H110 (& 296) to #9 in 357 Magnum. In a 9” FA 97, #9 outperforms H110 in fps and group size by a significant margin.

[bigbore5]

May 22, 2023 8:46:54 GMT -5 seminolewind said:

I haven’t tried #9 in 45 Colt, but I have compared H110 (& 296) to #9 in 357 Magnum. In a 9” FA 97, #9 outperforms H110 in fps and group size by a significant margin.

You should see #9 in a 353. It's right with the 357max and beyond.

[oddshooter]

bigbore5,

I want to thank you for your time and efforts to get this load data and comparison. It was very interesting to read your professional procedures for prepping the brass and even selecting the primer. I am engaged in that #9 experiment right now myself.

Thanks also for finding the upper end of that 32H&Rmag with #9. At least for me, above 1500fps is a little too hot for my needs in .32HRmag. Again, I appreciate you taking the risk to find it. That means the rest of us don't have to.

I have an older Harrington and Richardson top break 32H&Rmag and it would fly apart with that load. I have two tiers I handload for and use PC colors to distinguish between them.

Prescut

[z1r]

May 22, 2023 12:09:51 GMT -5 oddshooter said:

bigbore5,

I want to thank you for your time and efforts to get this load data and comparison. It was very interesting to read your professional procedures for prepping the brass and even selecting the primer. I am engaged in that #9 experiment right now myself.

Thanks also for finding the upper end of that 32H&Rmag with #9. At least for me, above 1500fps is a little too hot for my needs in .32HRmag. Again, I appreciate you taking the risk to find it. That means the rest of us don't have to.

I have an older Harrington and Richardson top break 32H&Rmag and it would fly apart with that load. I have two tiers I handload for and use PC colors to distinguish between them.

Prescut

This is one of the primary reasons I want to start PC'ing my cast bullets, so I can easily distinguish between high and low pressure loadings of the same cartridge.  Thinking Red=High Pressure, any other color = standard pressure.

[bigbore5]

These bullets did lead the barrel, but I believe it to be because of the undersized cylinder throats amongst still being a touch soft. Water dropped from the mold would have been better, but I never intended to push them this hard. This is 327 Federal level performance.

The velocity is high due to the 9-1/2" barrel, but pressures are up there too. The H110 loads brass slid right out and the primers looked very good. The #9 load required a small assist from the ejector rod and was beginning to flatten the primers. It's hot.

[markwell]

Greenfrog

Approximately where in Virginia are you located?

From afellow .32 shooter.

[markwell]

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[markwell]

Anyone loading the Rim Rock 125gr Keith swc?

I’m getting 1080fps with 4gr of W231. Not quite up to the Buffalo Bore load but close. If you’re loading this bullet I’d be interested in your results. We are using the 12BN version of the bullet, BTW.

[potatojudge]

Jan 24, 2024 13:19:31 GMT -5 markwell said:

Anyone loading the Rim Rock 125gr Keith swc?

I’m getting 1080fps with 4gr of W231. Not quite up to the Buffalo Bore load but close. If you’re loading this bullet I’d be interested in your results. We are using the 12BN version of the bullet, BTW.

I've got them and brass ready to load, so I'm interested in your results. 

[markwell]

'taterjudge,

As I continue to pursue my recently acquired .32 H&R addiction. I have decided to settle on two loads for my revolvers; a 100gr XTP load and a do-all lead bullet load that closely mimics the Buffalo Bore Heavy .32 H&R Mag +P Outdoorsman round but, is affordable to shoot in volume.
BB uses a bullet that is either 15BHN or 21-22BHN. BB says one thing and Rim Rock says another. Anyway, I settled on the 12BHN version as they are available in 500 round boxes at a very good price. I'm using mostly Starline brass, Win SP primers and W 231 powder. Being a long time IPSC/IDPA shooter, I use 231/HP38 for a lot of my loading and buy it in volume. We have yet to run out through this, or past shortages.
In a nutshell, that's our story to date. We are awaiting the return of our 3.5" single six from Ronnie Wells for final testing of this lead load but I think we've hit a good stopping point and have been loading a pretty good bunch of it on our do-all Dillon 550.

[bigbore5]

I really like the Arsenal 32-98 Keith bullet in the magnum. Starline brass, CCI 500, 9.0gr #9, 1395fps from my 9-1//2" single six.

I cast them at 12bhn then powder coat two coats, air-cooled. At that velocity they are great on coyotes. Most of the exits are over an inch and the lungs are torn up. It's obviously expanding, even if cast as a solid.