.303 British chrono results


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351 WINCHESTER
September 6, 2009, 09:40 PM
Today I was blessed by a young man that let me use his chronograph.

.303 British 125 gr. sierra pro hunter behind 46 grs. H335 only gave about 2650 were as the book stated about 3,000.

S & B factory 150 gave almost 2700 fps.

Privi 174 bt factory gave about 2450.

I'm wondering why I only got 2650 with a max load of H335 with a 125 gr. bullet?

Any input would be appreciated.

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