110g JLKs.
6mm GT
- Thread starter wboggs
- Start date
To be honest, I am not really sure. I seated to 50 thou off and they knotted up, so I have not tried any other seating depth with this combination.
DLT
Silver $$ Contributor
Shooting like that I don’t believe I would
ballisticdaddy
Silver $$ Contributor
6GT is a great little cartridge, this load is using a Berger 108 over H4350 in GAP brass shot off a rickety old bench out of my PRS rifle with a cold bore.....yes it's a 10 shot group.
At that point how much drop off in precision are you seeing?
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What dies are you using for the GT? I am looking for one but there is Hornady @85 then Redding @ $300+.
Clancy
Silver $$ Contributor
Forster and Wilson make dies for the GT as well.
ballisticdaddy
Silver $$ Contributor
I use a Forester full length sizing die custom honed to my preferred neck tension $76.63
For seating the LE Wilson micrometer seater $140.00 and can't go wrong with either die.
For seating the LE Wilson micrometer seater $140.00 and can't go wrong with either die.
ToddKS
Gold $$ Contributor
Best sizing die for the 6GT is the Short Action Customs die with the shoulder bushings. That is what I am using now. I started with the RCBS Matchmaster. It was as good as any die I had used (Redding, Forester, Lee) until I purchased the SAC die. The SAC die produces more consistent results than any I have used previously. This is on the same press with brass prepared/annealed in the same manner.
wboggs
Gold $$ Contributor
I have nevdr been able to afford the SAC dies but everyone who uses them says they are the best they have used.
ToddKS
Gold $$ Contributor
I purchased the SAC die when I put my 25GT together as they offered the shoulder bushings for the 25GT. If I had not done the 25 I don't know that I would have made the investment. I was happy with the results from the Matchmaster.
So would you say the difference between the two would show up on the target?
ToddKS
Gold $$ Contributor
I have not seen any change on target. My groups with the Matchmaster die were very good. Where I have observed a difference in on bolt close. With the Matchmaster die I would have the occasional bolt close that was tighter than normal. That seems to have gone away with the SAC die.
These are the differences as I see them:
- According to the SAC website, their die sizes the base of the case more than other dies
- The SAC die uses a one piece shoulder/neck bushing which eliminates the slight ring at the base of the neck created by bushing dies (with the Matchmaster dies this ring was very slight, much less than I have seen from some Redding dies in particular)
- The SAC die produces more consistent shoulder setback vs the Matchmaster (slight improvement, but observable)
I will note that the SAC die cannot overcome the lack of annealing. I accidentally sized some brass without annealing and the results were not nearly as consistent. The brass in question was once fired Alpha 25GT.
This seems like a worthy rabbit hole to explore.
If there's equally consistent cam over, and die to press setup is rigid, what feature of the SAC die would help with this?
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