Can 6.5 Creedmoor FL Resizing Die Be Used On 6.5 Grendel Also?
- Thread starter RLinNH
- Start date
Well, it was a thought... What brands of FL Resizing dies are people here using and getting good results with? I am getting ready to build a 6.5 Grendel and would like to have some loaded cartridges for the day when I may ACTUALLY
complete the build...
Redding type s FL bushing dies have always done me well. Though I’m switching over to another brand to see if I get more consistent neck tension with out having to ran a mandrel. Preliminary testing shows it’s an improvement
No, this will not work. They may be the same caliber (6.5mm, .264"), but they are different cartridges. This means the cases have different dimensions. The 6.5 Creedmoor cartridge is not only longer, but they have different neck, shoulder, and base sizes too. The FL resizing die's purpose is to restore fired cases back to original dimensions (closely at least). Each brand has different tolerances, so they don't get exactly back to the "defined" dimensions, but close enough to fit in SAAMI-spec'd chambers. When you fire a round in your gun, the case expands to the dimensions of your chamber. Typically, you would resize the case to push the shoulders back .002" (some people do .001", or .003"+ for semi-autos) to ensure consistency with your rounds, and providing just enough headspace that is specific to your gun. This also explains why you have to trim rifle cases, since you’re making the case body/shoulder smaller than it was, the brass has to go somewhere, and so it increases in length. Each time you fire and resize your brass, it becomes more thin over time (which is why brass has a certain lifetime before it wears out and cracks, depending on the quality and whether you anneal your brass to restore strength in the shoulder and neck).
I'm sure others can explain this better than myself, but that's the basic explanation behind what a resizing die is supposed to do.
However, with something like the Hornady bullet seaters (which are caliber-specific by design), you could use the same die since the bullet diameter is the same. Others like the Forster and Redding seaters would not work across calibers because they have sleeves that are just larger than the cartridge's case diameter (which would be different between cartridges, such as 6.5 CM and Grendel), which helps support the case while the bullet is seated to improve how straight the operation is performed (eg. bullet runout).
Hope this helps!
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