Im Putting together a new IHMSA gun together.It is a remington XP100R with 14 7/8" bbl including the JP recoil elmenator brake in a 1 in 8" twist with a weaver 6X24X50 scope on it.I will be shooting out to 500 meter so recoil does matter.So would anybody have any ideason a good starting data to work from.
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I have a factory XP100R in .260 Remington. So far I have only used the 123 grain AMAX. I haven't work on loads a lot but so far my best load is with Varget and I'm getting 2640 fps on my max load.
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