lionhunter Report post Posted March 19, 2009 I am trying to reproduce winchester Silvertip 150 gr. 300 wsm loads. Does anyone know if there is a way to findout what powder/ primers that they use in their factory produced bullet???? Is there a web sight to look it up, or does Winchester keep it a big secret?? I thought it would be easy to get that bullet shooting the same speed by reloading my own, but so far the closest I can get is around 100 fps slower..... Any info would be helpful. Thanks Whitey Share this post Link to post Share on other sites
GameHauler Report post Posted March 19, 2009 I am note sure but I think they do not make their data available. What kind of speed are you looking for? Share this post Link to post Share on other sites
lionhunter Report post Posted March 20, 2009 Shooting the Factory Winchester 150 Silvertip I get 3250 ish out of my set up, and my scope is calibrated to it perfectly out to 550. I figured that reproducing that speed with the same of simular bullet would be easy, but so far the best I have been able to get is 3150 with imr4350 and 150 gr accubond. This speed is fine with me other than it is eating me up knowing that I can do better with something I can buy over the counter, and the fact that I would have to "re figure out" my scope....... Whitey Share this post Link to post Share on other sites
Benbrown Report post Posted March 20, 2009 Winchester, like most ammunition manufacturers, does not necessarily use a cannister powder available to the reloading public. However, according to the 5th Edition of the Nosler manual, you should be able to get there with W 760, H 414, IMR 4360, VV N550, RL 19 or IMR 4831. Work your way up to the maximum listed, looking for pressure signs. If you don't have access to a Nosler manual, PM me and I will give you starting and maximum loads for each of these powders with a 150 grain Ballistic Silver Tip. Good luck! Share this post Link to post Share on other sites
GameHauler Report post Posted March 20, 2009 The best that the Lyman 48th edition is showing is 3247fps over a max load of N160. Looks like your right in the ball park and may want to make the scope adjustments. Share this post Link to post Share on other sites
lionhunter Report post Posted March 20, 2009 Thanks for the info and the offer for more info (Ben), I do have the Nosler 6th ed. Manual. I think the problem with that info is that those loads were tested in a 26 inch berrel, and 99% of the short mags are built with a 23 inch barrel; mine included. I will keep after it... They thing shoots great, so maybe just figure out the new aim points... Thanks Whitey Share this post Link to post Share on other sites
