Also for anyone in the FTR game, do you do your load development of the bi-pod or use a front rest (I have a SEB MAX for F open)?
Cheers,
James.
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williada wrote:James, I have used those sand bags and found unless packed correctly you will get bounce and so it makes it very difficult to find a tight spot. You are better off with a bit of plate welded in a frame topped with marine carpet. Do load development in .2 grain increments. Get a set of calipers and measure around the extraction groove for .001" excess expansion. Any more stop. Check for pressure signs like flattened primers, then cratering and sticky bolts etc . This powder will generate well in excess of 3000 fps in .308 with 45 grains or a tad more. At the moment I think the load could be increased but it depends on your pressure signs. Maybe you could get up 3040 fps or a tad more but safety and barrel wear could become issues. You simply have to test. Those with long barrels do not have the same pressure issues so beware of people giving out loads for your own safety. Chamber dimensions should be true SAAMI for this class and tight bores or custom chambers with tight throats will raise pressure.
williada wrote:James, David is a great guy and an excellent gunsmith. He is a person who shoots 8208 well and would be my first port of call having chambered the rifle. Give him a bell. It is essential that you realize 8208 is not the same powder that is 2208 and requires significantly less than 2208 to be effective. Don't think it would be wise to run 47 + of 8208. You must work up a load and chronograph it and look for stability areas. You should find an upper node (shooter speak) within a 1.4 grain range from max. safe pressure. ps James, the secret to staying in front of your wife is to load her ammo. Just an old man's advice.![]()
Tim L wrote:I am wondering why you're using 115.5s. These are a very capable projectile and used to great effect buy F std. But when you swap that rest for a bipod you will need every advantage you can get, and once you get back to the longs the bullet bc becomes a definate advantage.
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