Anyone Tried Lil'Gun in .357mag With 125grn Bullets

Welcome to the Leverguns.Com Forum. This is a high-class place so act respectable. We discuss most anything here ... politely.

Moderators: Hobie, AmBraCol

Forum rules
Welcome to the Leverguns.Com General Discussions Forum. This is a high-class place so act respectable. We discuss most anything here other than politics... politely.

Please post political post in the new Politics forum.
Post Reply
Message
Author
User avatar
COSteve
Advanced Levergunner
Posts: 2899
Joined: Sun Jul 12, 2009 4:03 pm

Anyone Tried Lil'Gun in .357mag With 125grn Bullets

#1 Post by COSteve » Thu Oct 03, 2019 6:41 am

A friend gave me some 125grn Zero JSP bullets he found in a box of his dad's reloading components to try in my Rossi and I'm curious to hear from anyone who has given them a try with Lil'Gun. I'm just curious to see if they work well or poorly at ranges of 200yds. I know that Hodgdon doesn't show load data for bullets lighter than 158grn with Lil'Gun powder. I'm asking if anyone has actually tried it with some 125grn bullets, especially in a levergun.

Hodgdon lists 16.7grns for 158grn bullets with H110 and 22.0grns for 125grn bullets; a 32% increase over the 158grn loads. Using that logic and extrapolating their data for Lil'Gun, working up a charge of Lil'Gun for a 125grn bullet starting at 18.0grns might go up to the 23.8grn area. However, I don't think that it's linear so working it up from 18.0grns in .5grn increments would be prudent and my approach.

As Hodgdon has told me that Lil'Gun doesn't have the minimum charge caution that H110 does, I've tried my 158grn loads all the way down to 14.0grns as plinking loads with decent results and so I'm wondering about the 125grn bullets and how they might perform as well. Any information you might have would be appreciated.
Steve

Noli nothis permittere te terere
“Remember, no matter where you go, there you are.” - Confucius
"When you find a find a big kettle of crazy, it's best not to stir it." - Dilbert

41 Redhawk
Levergunner 2.0
Posts: 355
Joined: Fri Sep 14, 2007 12:05 pm
Location: Pittsburgh, PA

Re: Anyone Tried Lil'Gun in .357mag With 125grn Bullets

#2 Post by 41 Redhawk » Thu Oct 03, 2019 1:13 pm

I took a look at loaddata.com and there was no loads there either. The lightest bullet I saw listed was a 145 gr bullet and 20 grs was max.
The Lord Bless You

Terry

User avatar
COSteve
Advanced Levergunner
Posts: 2899
Joined: Sun Jul 12, 2009 4:03 pm

Re: Anyone Tried Lil'Gun in .357mag With 125grn Bullets

#3 Post by COSteve » Thu Oct 03, 2019 2:24 pm

I did find that Hodgdon lists a 125grn Lil'Gun load for the 350 Legend, however, as it's a rifle cartridge made to operate using rifle pressures, they show charge weights that produce peak pressures far above those of the .357mag. Even at the starting load, the pressure for 24.0grns under a 125grn bullet is 42,400psi while the max charge of 27.5grns produces 52,300psi.

That said, it shows that a max for a 125grn .357mag load is somewhere down around 20 - 21grns I'm betting. What I'm really trying to find out is what the consistency would be for a load like that. Is it accurate or does it vary all over the place.
Steve

Noli nothis permittere te terere
“Remember, no matter where you go, there you are.” - Confucius
"When you find a find a big kettle of crazy, it's best not to stir it." - Dilbert

User avatar
earlmck
Advanced Levergunner
Posts: 2863
Joined: Tue Nov 30, 2010 12:10 am
Location: pert-neer middle of Oregon

Re: Anyone Tried Lil'Gun in .357mag With 125grn Bullets

#4 Post by earlmck » Fri Oct 04, 2019 11:45 am

My .357's never see jacketed bullets so I have no experience at all in that department. But out of "Levergunner curiosity" I looked at your question in QuickLoad and for a 1.59" COAL it says 20 grains is max. But it would be whistling along at nearly 2300 fps, so no slouch. And Lil'Gun gets the nod from QL as delivering the highest velocity at max pressure of any powder, though Norma R123 and H110 are close.
The greatest patriot...
is he who heals the most gullies.
Patrick Henry

User avatar
COSteve
Advanced Levergunner
Posts: 2899
Joined: Sun Jul 12, 2009 4:03 pm

Re: Anyone Tried Lil'Gun in .357mag With 125grn Bullets

#5 Post by COSteve » Sat Oct 05, 2019 1:45 pm

earlmck wrote:
Fri Oct 04, 2019 11:45 am
My .357's never see jacketed bullets so I have no experience at all in that department. But out of "Levergunner curiosity" I looked at your question in QuickLoad and for a 1.59" COAL it says 20 grains is max. But it would be whistling along at nearly 2300 fps, so no slouch. And Lil'Gun gets the nod from QL as delivering the highest velocity at max pressure of any powder, though Norma R123 and H110 are close.
Thanks a lot for that QuickLoad information. As I said above, I suspected that somewhere around 20grns would be a max load so that information confirms what I thought. I'm thinking I might start at about 16.0grns and work some up to maybe 17.0grns as plinking loads, not necessarily for long range.

As to QuickLoad predicting high velocities with Lil'Gun, I can attest that a full 18.0grn charge under a 158grn bullet produced an average of 2,005fps (!!!) out of my 24" rifle and 1,952fps (!!!) out of my 20" carbine at my range 6,100ft asl on an 84°day vs 1,822fps and 1,789fps with H110. I was very surprised at those velocities which is why I'm playing around with 158grn loads in the 14.0grn area as well.
Steve

Noli nothis permittere te terere
“Remember, no matter where you go, there you are.” - Confucius
"When you find a find a big kettle of crazy, it's best not to stir it." - Dilbert

User avatar
COSteve
Advanced Levergunner
Posts: 2899
Joined: Sun Jul 12, 2009 4:03 pm

Re: Anyone Tried Lil'Gun in .357mag With 125grn Bullets

#6 Post by COSteve » Tue Oct 08, 2019 9:07 am

After a very good discussion with Hodgdon's Tech Support and then one with Alliant's I've decided to go another way. I have kegs of both Power Pistol and Unique so for full power 125grn loads I'm going to use my Power Pistol and for plinking to medium power 125grn loads I'm going to use my Unique. As Alliant data exists for both powders with the 125grn bullets, I figure it's a safer choice. Lil'Gun will still be my go to for my 158grn and heavier bullets.
Steve

Noli nothis permittere te terere
“Remember, no matter where you go, there you are.” - Confucius
"When you find a find a big kettle of crazy, it's best not to stir it." - Dilbert

Post Reply

Who is online

Users browsing this forum: Hawkeye2 and 2 guests