JP Rifle LRP07 in 6.5cm - bullet/load development

[justanothershooter]

I have an JP Rifles LRP07, 22" barrel in 6.5cm semi auto on its way.

Ordered a box of Hornaday 147 ELD, Nosler 140 RDF and Nosler Accubond LR 142. These being top 3 BC's I can find!

Ive got 2 boxes of Hornaday Black to do barrel breakin.

Anyone with load development with these bullets in a 6.5cm semi auto?? OR

Using this gun with different bullets?

Many thanks

 

[.30kal]

I run a JP 22" barrel, bolt combo. Had great luck with the 140 ELD and the 123 Scenars. Anything above and I think you won't get the benefit of the higher BC since you won't get the necessary velocity with 22" barrel in a gas gun.