I recently scored 5 fresh looking boxes of Hornady "Light Magnum" 150 gr. ammo at an estate auction for $9.00 per box. Anybody have any experience with this stuff? Ballistic tables indicate that this stuff approaches 30-06 performance and I'm wondering if it might not be a little too hot for use in my three old No. 1 Mk. IIIs? I'm thinking this ammo would be OK in my two No. 4s and no problem at all in my Pattern 14.

Just looking for some experience expretise. Thanks in advance.
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