Thread: .338 Lapua and 300gr Lapua Scenars

I am presently carrying our load testing with the above combination. There is no bullets specific data for this combo unless you want to use the VihtaVuori powder which I don't. Using AR2225 I get a huge max charge weight from 89.5gr from Berger using Berger bullets to 94gr from Hodgdon using Sierra MK bullets. That's a big difference. What charge weights with AR2225 are you guys using with 300gr bullets?

Thanks
Jeremy

95gr 2225 in mine. It’s pretty hot but primers are still round. Some of the other guys are around 92-94. Ie John Mitchell and nick Hamilton in their dta’s.

With Lapua brass depending on the action & powder lot 93-94 of 2225/Retumbo behind a 285/300 should be fine, less a grain or two if you are using Norma.

Thanks Guys

Scenars & SMKs generally shoot really well but their BC isn't up with the 300 Berger or 285 ELDM Hornady

Don't use Scenars or OTMs on animals

Been up to the range today to chrony and shoot groups. I loaded from 89.5 to 95gr of AR2225. The 300gr Scenars are coated with the Tubb Boron Nitride which has given me very good results in my 6.5x47 Lapua and 7mm Rem Mag. You generally have to load a couple of grs higher to reach expected velocities but the resulting reduction in fouling makes it well worth while. With this expectation I was surprised to reach max pressure at my lowest load of 89.5gr 2735fps with bolt face rub at 90grs and 2789fps. good velocity and about 0.50" 3 shot groups. I will load some more around this point and shoot 5 shot groups and asses results.

I also carried out a tall target test on my older Vortex Razor HD 5-20x50 With 100 clicks wound on at 100m the adjustment measured 1015mm so 1.5% over. This can be adjusted in my ballistic solver

Shit that will save you some powder. My 26” got 2750 with 300’s at 95gr with lapua brass. The 285 was 2850 with 95gr. Interestingly my hardy barrel on my 300 maxes out at low powder charges also.
Be aware that the magnetospeed on your barrel while shooting groups can affect it.

Originally Posted by Kiwi Greg

Scenars & SMKs generally shoot really well but their BC isn't up with the 300 Berger or 285 ELDM Hornady

Don't use Scenars or OTMs on animals

Thanks Greg I'm aware of the bc deficit I will see if I can get them to shoot well. I can get them very cheap so if they run well I can put up with a few more clicks