Has anyone got a load worked for Nosler 80 grain ballistic tips or 85 grain sierra game kings
I have some n160 powder in stock but i'll gladly buy some other for the right load. I appear to be getting 3/4 inch groups with 49.5 grains of n160 with 80 grain Nosler Ballistic Tips. I would like to improve this if possible. I have been using fireformed lapua brass with cci primers.
No problem at all here. There's some data out there for the 243 AI, but bear in mind that upper level loads for the parent cartridge are usually the best starting point for any of the AI family of cartridges. Depending on the particular cartridge we're talking about (some are more "Improved" than others), there is usally a 3-5% increase in case capacity over the parent case, sometimes more, sometimes a bit less.
Your load of 49.5 grains with the N160 is pretty close to what I'd suggest here, based on the V-V 7th edition Reloading guide, and the 243 Win cartridge. They top out at 48.1 for an 87 grain bullet, but that's a standard cartidge, not the AI version. You should be fine there, and may een have some room to bump up a bit, if there's no pressure indicators so far. Just work slowly, and let the gun tell you what it'll handle.
My father has had good luck with 51 gr. of AA-3100 behind a 80 gr. Berger. Five shot groups hover around the 1/2" mark and velocity for the groups averages 3481 fps. I can't help you with the Sierra 85 gr. bullets. 3100 might work with those as well. N160 is better suited to the 70 gr. and lighter class of bullets in the Ackley. I use AA-4350 and N160 for the 70 gr. Berger in my 243 Ackley with great results. N165 would be a good Viht. powder for 80-85 gr. bullets in the Ackley. N160 and 4350 work well in the standard 243 but a little slower powder can be used with the Ackley and its greater case volume, especially when shooting bullets in the 80-85 gr. class.
Just my opinion.
Kevin - Are you sure that the data you posted for the 243 came from Viht. 7th edition reloading manual? I ask because your data matches what I show from Viht. 4th edition and it was published in January 2007. I wasn't aware that Viht. had a 7th edition but Hornady does. Just trying to clear up the details.
Yeah, it was. The 7th edition I mentioned was their latest reloading guide, not a true "reloading manual" per se. Their 4th Edition, as you'd described, is the latest hardbound (true) Reloading Manual that V-V has out. As to how they number their reloading guides vis their true manuals, hey, maybe it loses something in the Finnish to English translation. All I can say is, they make some truly superb powders, and I like 'em!
But yes, the data in the 7th Ed reloading guide is the same as the 4th Ed reloading manual.