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Rifles, Reloading, Optics, Equipment
Reloading
300 Weatherby Load Help
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<blockquote data-quote="Hired Gun" data-source="post: 100461" data-attributes="member: 1290"><p>As far as the freebore goes. Forget about it. I have shot many groups from all 4 of my Weatherby's right under 1/2 of an inch. Only the aluminum bed blocked ones need the 65 inch pounds of torque. The wood stocked and regular synthetics only torque up to 40-45 inch pounds. If you are using windage adjustable rings make sure the windage screws are torqued up to 40-45 inch pounds or your groups may wander on a 300Wby.</p><p></p><p>Which Mark 5 are you using? Use only in Weatherby brass, for Remington brass back off 3 grains. My sweet spot load is 88.5 grains of IMR-7828 behind a 180 grain Nosler Partition. It usually shoots 1/2 MOA and goes 3300 fps. I seat them at 3.60". This load very closely duplicates the factory round in velocity and the very slight extractor mark. At 88 grains I get no marks of any kind but haven't chronographed yet because my chronograph is at Pact at the moment. At 88 grains the groups opened up just a bit. 180 grain Barnes Triple Shocks shoot well too with the same load. I know the pressures are not too bad as I only neck size with Lee Collet dies and the pockets are still tight and the bolt handle goes down easy after 5 firings on the same brass.</p><p></p><p>I pretty much avoid working up loads in my hunting rifles with bullets that are not suitable for hunting with. If you varmint hunt with it like I do, then I would try anything for less than deer sized animals. The target bullets and the Sierra Game Kings are a little fragile for the 300Wby on big game.</p></blockquote><p></p>
[QUOTE="Hired Gun, post: 100461, member: 1290"] As far as the freebore goes. Forget about it. I have shot many groups from all 4 of my Weatherby's right under 1/2 of an inch. Only the aluminum bed blocked ones need the 65 inch pounds of torque. The wood stocked and regular synthetics only torque up to 40-45 inch pounds. If you are using windage adjustable rings make sure the windage screws are torqued up to 40-45 inch pounds or your groups may wander on a 300Wby. Which Mark 5 are you using? Use only in Weatherby brass, for Remington brass back off 3 grains. My sweet spot load is 88.5 grains of IMR-7828 behind a 180 grain Nosler Partition. It usually shoots 1/2 MOA and goes 3300 fps. I seat them at 3.60". This load very closely duplicates the factory round in velocity and the very slight extractor mark. At 88 grains I get no marks of any kind but haven't chronographed yet because my chronograph is at Pact at the moment. At 88 grains the groups opened up just a bit. 180 grain Barnes Triple Shocks shoot well too with the same load. I know the pressures are not too bad as I only neck size with Lee Collet dies and the pockets are still tight and the bolt handle goes down easy after 5 firings on the same brass. I pretty much avoid working up loads in my hunting rifles with bullets that are not suitable for hunting with. If you varmint hunt with it like I do, then I would try anything for less than deer sized animals. The target bullets and the Sierra Game Kings are a little fragile for the 300Wby on big game. [/QUOTE]
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300 Weatherby Load Help
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