Benelli MP90S World Cup .32S&WLong reloading

jbshooter · Post by **jbshooter** » Sun Jan 30, 2011 1:27 am

Hello everyone.
I have one of these pistols for ISSF centrefire and want to begin reloading for it. I would like to hear from other Benelli users if they have to make their reloads on the hotter side. I will use Lapua brass and Lapua 98gr HBWC. Others have also suggested using magnum pistol primers. I have used GSP's and 280's in the past.

JamesH · Post by **JamesH** » Sun Jan 30, 2011 2:31 am

I can't think of any reason to use magnum primers.

Tycho · Post by **Tycho** » Sun Jan 30, 2011 11:45 am

There's a theory around that you get more consistent loads by using magnum primers and very small powder charges (around 1 grain). Never tested it thoroughly, though.

sobakavitch · Post by **sobakavitch** » Sun Jan 30, 2011 12:37 pm

. . . .

Tycho · Post by **Tycho** » Sun Jan 30, 2011 4:26 pm

Why don't you simply try it?

sobakavitch · Post by **sobakavitch** » Sun Jan 30, 2011 5:00 pm

. . . .

Rover · Post by **Rover** » Sun Jan 30, 2011 6:38 pm

Simple. It's because the very light loads are at such low pressure that a magnum primer enhances powder burning.

I frequently use magnum primers in my light pistol target loads with no ill effect. Frankly, I see no difference.

In some experimentation I did with light rifle loads, hot primers cut groups sizes in half.

jbshooter · Post by **jbshooter** » Sun Jan 30, 2011 7:14 pm

Okay okay. Putting magnum primers to one side for the moment, has anyone had any experience with handloading for the Benelli MP90S World Cup in .32?

sobakavitch · Post by **sobakavitch** » Sun Jan 30, 2011 9:29 pm

. . . .

JamesH · Post by **JamesH** » Mon Jan 31, 2011 7:29 am

2.0 grains of Bullseye in a .32 is a pretty heavy load, so be warned.

I'd work up very slowly from 1.4.

Brian James · Post by **Brian James** » Mon Jan 31, 2011 1:07 pm

I am using Speer 98gr HBWC with 1.1gr of N310 or 1.8 of W231. The N310 is a touch light, and will make up some using 1.3.

I have limited experience with the MP90, but its seems to benifit from hotter rounds than say the Pardini HPE.

Please let us know what you find as good load.

I will also be trying some loads using Trailboss - likely around 1.5gr.

Brian

Mark Briggs · Post by **Mark Briggs** » Mon Feb 07, 2011 10:01 pm

From a side-by-side comparison basis, firing Brian's Benelli with 100gr cast bullets and 1.8gr W-231, then shooting the same load in my Unique DES-32/U, I would say the Benelli was not unpleasant to shoot with this loading and grouped reasonbly well at 20 yards. For a pistol that's quite light I'm surprised at how well it shot and how good it felt in the hand.

brakarzac · Post by **brakarzac** » Mon Feb 07, 2011 10:14 pm

JamesH wrote:I can't think of any reason to use magnum primers.

I always loaded my pistol loads with small rifle primers.

Everything from .32 S&W target to my major .38 Super IPSC loads.

The .32 S&W loads were very nice, consistent with tight groups. It also made it easy when doing calibre changing from .32 to 9mm to .38 Super... I didnt have to empty the primer tube in the Dillon 650.

Back then I would load 1.4 of WST with Federal SM Rifle primers and 98gr HBWC from a local bullet maker.

These days I get someone to load for me... 1.3gr of N310 with 98gr HBWC. Dont know or care what primers, they still go bang everytime.

Cheers

Edit:
BTW, Those loads were for the Walther GSP Expert and the Hammerli 280.
I am now using the Matchguns MG4 with the same loads.

PFribley · Post by **PFribley** » Sat Feb 12, 2011 9:17 am

For me anywhere from 1.1 to 1.3 N310 with the 90gr. swagged Hornady wadds shoots well. I also have some 88gr. cast wadds I purchased from a local dealer. He got them at an auction. Doesn't know where they came from. The shoot well also. This is at 50 to 75 feet. I have found for me the lighter wadds shoot and group better. This is in a Pardini HP. Has anyone worked up loads for 50yds????