Tried to post this yesterday and the site bombed out on me in some strange way so here we go again, sorry if it appears twice somewhere as the first one might have gone through a wormhole only to appear again in due course.
I've been loading 150 grain Hornady Spire Points in my 308W. The load is giving me good accuracy and 3000fps with no sign of any pressure and some cases are on 10+ loadings with no problems. I'm loading 49 grains of Reloader 15 which is a book max load according to Alliant.
After over a year of waiting I've finally managed to get he 150 grain Nosler Partitions that I wanted to try out but my supply is fairly modest and I'm not likely to get any more any time soon so I want to use as few as possible in load development.
Has anyone, and I know it is a pretty remote chance, gone from shooting Hornady Spire Points in 308 with RL15 to the Partitions? If so any guidance on how you had to change the load etc.?
My plan, and I'm open to comments, is to load single rounds in 1 grain intervals from 42 to 46 grains as this is the load Nosler print for this bullet. If there are no signs of pressure then I may work up further in half grain intervals but never exceeding the Alliant 49 grain max for a 150 grain bullet. I will then load up 5 rounds at intervals starting from what I decide is my max load downwards and shoot them for groups with the hope that one of them will shoot well for me without too much messing about. To be honest my Blaser tends to shoot everything reasonably well so load development for it hasn't been a big problem but I'd like to try and keep some of the decent velocity I'm getting and also get accuracy around the 1 inch mark with accuracy being the priority.
All thoughs and suggestions are gratefully received.