GM3 and 357 Mag reloading

This section is for reloading and ammunition only, all loads found in here are used strictly at your own risk, if in doubt ask again.
All handloading data posted on Full-Bore UK from 23/2/2021 must reference the published pressure tested data it was sourced from, posts without such verification will be removed.
Any existing data without such a reference should treated as suspect and not used.

Moderator: dromia

Forum rules
All handloading data posted on Full-Bore UK from 23/2/2021 must reference the published pressure tested data it was sourced from, posts without such verification will be removed.
Any existing data without such a reference should be treated as suspect and not used.

Use reloading information posted here at your own risk. This forum (http://www.full-bore.co.uk) is not responsible for any property damage or personal injury as a consequence of using reloading data posted here, the information is individual members findings and observations only. Always verify the load data and be absolutely sure your firearm can handle the load, especially older ones. If in doubt start low and work your way up.
Post Reply
Message
Author
User avatar
dodgyrog
Posts: 4103
Joined: Wed Jan 05, 2011 11:17 pm
Home club or Range: Three Counties Sporting Club & Gardners Guns
Location: Consett, County Durham
Contact:
Contact dodgyrog

Re: GM3 and 357 Mag reloading

#11 Post by dodgyrog »

Just bear in mind it is hygroscopic and pressures will grow if it gets slightly damp
Purveyor of fine cast boolits.
All round good guy and VERY grumpy old man.
Top
the running man
Posts: 2004
Joined: Tue Jun 07, 2011 7:05 am
Home club or Range: Bdrpc ebrpc
Contact:
Contact the running man

Re: GM3 and 357 Mag reloading

#12 Post by the running man »

A lot of folk on the gr comp circuit use gm3.....in fact it turns up by the ton and then gets evenly distributed amongst the guys.....it's a green powder and measures well like bullseye....and it's cheap as chip! So no wonder it's popular...
When someone says "it's not about the money" you know what? it probably is all about money!
Top
User avatar
mag41uk
Posts: 1847
Joined: Sat Oct 13, 2012 3:50 pm
Home club or Range: Aldershot R & P Club
Location: Reading
Contact:
Contact mag41uk

Re: GM3 and 357 Mag reloading

#13 Post by mag41uk »

An alternative that we are testing is Maxam csb5.
We have used a mountain of Vectan AS but availability/price is now dire.
I didn't know GM3 was still available at a decent price.
The Maxam you can get from here: http://www.claygame.co.uk/maxam-csb5-powder-pd18
Or Folkestone engineering.
There is loading data on Maxam`s website.
Top
User avatar
phaedra1106
Posts: 3429
Joined: Wed Feb 08, 2012 9:37 pm
Location: Just outside Sacriston (the nice bit!)
Contact:
Contact phaedra1106

Re: GM3 and 357 Mag reloading

#14 Post by phaedra1106 »

Any known proven loads for CSB-5 in the 44?, there's good reports using CSB-1 on the S&W forum but I can't see anyone selling it in the UK.
There's room for all Gods creatures, next to the mash and gravy :)
Top
Lever357
Posts: 499
Joined: Mon Jan 09, 2017 1:10 pm
Home club or Range: Louisa Centre
Location: Newcastle UponTyne
Contact:
Contact Lever357

Re: GM3 and 357 Mag reloading

#15 Post by Lever357 »

dodgyrog wrote:I've used it for 38 Spl loads but not magnum loads.
Just bought some GM3 at the Shooting Show yesterday so I can start reloading predominately .38 special for 25 yard indoor. What loads were you using for 158gm RNFP please?
Remember, we're all here because we're not all there!
Top
Lever357
Posts: 499
Joined: Mon Jan 09, 2017 1:10 pm
Home club or Range: Louisa Centre
Location: Newcastle UponTyne
Contact:
Contact Lever357

Load Data

#16 Post by Lever357 »

Bought my reloading gear last week at the shooting show and the powder I got is Vectan GM3. This is not listed in my Lee handbook.

Was wondering if people had experience of it and what they would recommend for a 158gm bullet in .38 Special case. Chap I bought it off reckoned 3.8 grains of powder.
Remember, we're all here because we're not all there!
Top
User avatar
dromia
Site Admin
Posts: 20228
Joined: Sat Nov 06, 2010 4:57 am
Home club or Range: The Highlands of Scotland. Cycling Proficiency 1964. Felton & District rifle club. Teesdale Pistol and Rifle club.
Location: Sutherland and Co Durham
Contact:
Contact dromia

Re: Load Data

#17 Post by dromia »

Have you done a search? This was discussed recently.
Image

Come on Bambi get some

Imperial Good Metric Bad
Analogue Good Digital Bad

Fecking stones

Real farmers don't need subsidies

Cow's farts matter!

For fine firearms and requisites visit
http://www.pukkabundhooks.com/
Top
Lever357
Posts: 499
Joined: Mon Jan 09, 2017 1:10 pm
Home club or Range: Louisa Centre
Location: Newcastle UponTyne
Contact:
Contact Lever357

Re: Load Data

#18 Post by Lever357 »

There was posts re Vectan for shotgun slugs.
Remember, we're all here because we're not all there!
Top
User avatar
dromia
Site Admin
Posts: 20228
Joined: Sat Nov 06, 2010 4:57 am
Home club or Range: The Highlands of Scotland. Cycling Proficiency 1964. Felton & District rifle club. Teesdale Pistol and Rifle club.
Location: Sutherland and Co Durham
Contact:
Contact dromia

Re: Load Data

#19 Post by dromia »

Obviously you need to learn search better.

http://www.full-bore.co.uk/viewtopic.php?f=11&t=29308
Image

Come on Bambi get some

Imperial Good Metric Bad
Analogue Good Digital Bad

Fecking stones

Real farmers don't need subsidies

Cow's farts matter!

For fine firearms and requisites visit
http://www.pukkabundhooks.com/
Top
Duey
Posts: 343
Joined: Thu Feb 11, 2016 6:33 pm
Home club or Range: Offas Dyke, Pickering, North Cotes Butts and Grove small arms
Location: Brookenby, Lincolnshire

Re: Load Data

#20 Post by Duey »

Search for GM3
Or look through this section backwards about 10 days or so
Top
Post Reply

Return to “Reloading and Ammunition”

Who is online

Users browsing this forum: No registered users and 6 guests