[Seth]

I'm still new to working up loads and want to confirm my methodology, please.

Raw Materials:
Vit N320
Montana Gold 180gr CMJ
Mixed brass

Gun is a 5" Scheumann Ultimatch Bull and Bushing Barrell S_I. I've shot up to 1.185" with the gun and it feeds flawlessly.
My plan was starting at about 4.2gr N320 at 1.185" and work up to 5.2gr.

I've read lots of load data info here and on the Jeff Maass IPSC load list. Seems that the powder drop and length are about right.

Is there anything with regard to this particular load I should be aware of?

Thanks.
seth

[Surge]

Sethmark, on Nov 19 2008, 09:25 PM, said:

I'm still new to working up loads and want to confirm my methodology, please.

Raw Materials:
Vit N320
Montana Gold 180gr CMJ
Mixed brass

Gun is a 5" Scheumann Ultimatch Bull and Bushing Barrell S_I. I've shot up to 1.185" with the gun and it feeds flawlessly.
My plan was starting at about 4.2gr N320 at 1.185" and work up to 5.2gr.

I've read lots of load data info here and on the Jeff Maass IPSC load list. Seems that the powder drop and length are about right.

Is there anything with regard to this particular load I should be aware of?

Thanks.
seth

Seems fine. My load is 5.0 N320 with MGs at 1.185 with a KKM barrel, but YMMV. Sounds like a safe plan. I haven't heard of anything less than 4.6 make major at that length with a 5" barrel but if you want to start at 4.2 you'll be fine.

[blue edge]

Sethmark, on Nov 19 2008, 10:25 PM, said:

I'm still new to working up loads and want to confirm my methodology, please.

Raw Materials:
Vit N320
Montana Gold 180gr CMJ
Mixed brass

Gun is a 5" Scheumann Ultimatch Bull and Bushing Barrell S_I. I've shot up to 1.185" with the gun and it feeds flawlessly.
My plan was starting at about 4.2gr N320 at 1.185" and work up to 5.2gr.

I've read lots of load data info here and on the Jeff Maass IPSC load list. Seems that the powder drop and length are about right.

Is there anything with regard to this particular load I should be aware of?

Thanks.
seth

Well I was beaten to this one

Kevin

[Matt Cheely]

I wouldn't bother with starting at 4.2. Lowest I've ever used to make major is 4.8 and I'm at 5.3 for the current gun. The load is safe anywhere in that range, and probably quite a bit above.

[Seth]

Thanks guys. I'm still tentative on reloading and don't want to grenade a perfectly expensive firearm.

Thanks.
Seth

[olp73]

Sethmark, on Nov 19 2008, 07:39 PM, said:

Thanks guys. I'm still tentative on reloading and don't want to grenade a perfectly expensive firearm.

Thanks.
Seth

I recently developed a load for my 40 and started at 4,2. It was a light load, but already at 4,5 I see pressure signs(flattened primers, federal sp). This is with a OAL at 1,145’’. So, take care. OAL is critical in 40sw.

[boz1911]

Takes 5.1 for me at 1.200 COL

[Dalmas]

With 5.6grain N320 my gun produces PF 176.

You can find alot of N320 loads here.

[RePete]

My load.

4.7gr/N320 under a 180gr Frontier CMJ. OAL 1.134"

My PF's.

176 from my STI Trojan and

179 out of my G35.

This post has been edited by RePete: 20 November 2008 - 07:31 AM

[buddy_fuentes]

"Is there anything with regard to this particular load I should be aware of?"

Safe place to start, but it won't make major. I am shooting lead 180's, which takes less powder, and 4.5 grains of N-320 gives me major. My bullets are set to a OAL of 1.185, also.

You are really going to need to use a chronograph to see what a particular gun is doing. Two identical guns with identical loads can have entirely different results (read as will have different results).

Good luck, Buddy

[ronhonda]

MG 180gr jhp, 5.0 gr of N320, win small rifle primer, and mixed brass loaded to 1.200 gives me a consistent 171-173 PF.
This out of a SC Brazos limited gun.
Also produced same results in 3 different guns including 2 sight trackers.
.02

[kgunz11]

1.185 COAL
MG 180 JHP
WSP primers
5.0 gr N320

169 PF
5" STI Edge

[hk_mtbr]

Thanks gang...this is good stuff!

I'm going to be setting up my 550 for 40 this winter...for a 5" Sig so I'm happy to see this info.

I already bought the N320 and MG 180's too.

<subjectivity drift on>

How would you guys describe the feel of this load? Snappy...pushy...smokey...etc? I have read that n320 is a clean powder.

I know that is tough...but I'm shooting a heavy stainless steel sig.

</>

[kgunz11]

I don't have a whole lot to compare it to. I just knew I liked it the first time I shot it. It is really, really clean and the recoil is minimal. Is it soft? I'd say so. Half push and half snap.

[randychaps]

I have a 5" STI 40 cal Hack-Fu special courtesy of Mig. I use 5.1 gr of N320, OAL of 1.180, mixed brass, decent crimp, and MG CMJ 180s for a power factor of 172.

Not too snappy and not too soft. Just right. With enough margin that I sleep through the chrono stage!!

Chaps 1
Team Hack-Fu
We think we know what we are doing!!

[RePete]

hk_mtbr, on Nov 20 2008, 03:56 PM, said:

Thanks gang...this is good stuff!

I'm going to be setting up my 550 for 40 this winter...for a 5" Sig so I'm happy to see this info.

I already bought the N320 and MG 180's too.

<subjectivity drift on>

How would you guys describe the feel of this load? Snappy...pushy...smokey...etc? I have read that n320 is a clean powder.

I know that is tough...but I'm shooting a heavy stainless steel sig.

</>

I find it a push straight back with both the Glock and the STI. No smoke at all.

[Seth]

I'm going to shoot it indoors tonite for the first time. Chrono tomorrow. I did 4.8, 5.0 and 5.2.

[Surge]

Sethmark, on Nov 20 2008, 05:13 PM, said:

I'm going to shoot it indoors tonite for the first time. Chrono tomorrow. I did 4.8, 5.0 and 5.2.

You'll be right on the money.

[BOGA]

I use 4.9 with 1.180-1.185. Major with cushion. 5in bbl. Never been declared minor whether winter or summer time chrono

[G-ManBart]

Sethmark, on Nov 20 2008, 03:13 PM, said:

I'm going to shoot it indoors tonite for the first time. Chrono tomorrow. I did 4.8, 5.0 and 5.2.

You should be really close. In my Edge, 5.0gr with a MG 180fmj at 1.200" gives me a PF of 174-175. I can drop down to about 4.7-4.8 and get 170pf. Schuemann barrels tend to run a little slow, so 5.0 might be right on the money. R,

[Seth]

Well... the 4.8gr didn't run well. I put 50 through the gun and it didn't feel right and about 8 of them failed to go to battery. Working on that problem now....

http://www.brianenos...?...pid=859995&

[Surge]

Sethmark, on Nov 21 2008, 08:02 PM, said:

Well... the 4.8gr didn't run well. I put 50 through the gun and it didn't feel right and about 8 of them failed to go to battery. Working on that problem now....

http://www.brianenos...?...pid=859995&

You didn't bring the 5.0s and 5.2s to try, too?

[Seth]

Nope. They were for Chrono and the weather was too blustery. I had made up some extra of the 4.8gr...

[jackruss]

5.2 V320
1.190 OAL

My power factor was 166 today checking some loads. Outside temp was 25 deg(Iowa) so at a more normal temp it should make major w/a little more margin.

[Seth]

What barrel length?