IvW,....what does your 500J weigh, and are you hand loading, if so what loads are you using? 10.25 would normally seem a little light for such a caliber. I'm using a load with IMR4320, that's not a published load anywhere, and the powder has been disc, its one I created, with 535gr Woodleigh RNSP. ( I have 10 lbs of the powder on hand) Its a really consistent @2260fps. A comparable current powder would be H Varget. When you compare that to say a Norma factory 540gr solid they claim 2400fps, not so on my chrono, more like 2350. Thats a very small 6% difference between the two. Wondering what you mean by normal loads? I've never even seen any sign of pressure with anything I've tried, so I'm quite sure you could really wind this caliber up but I've never been a fan of that, and does it really do anything productive other than add recoil? My load by most recoil calculators is 88 ft/lb, Leaning into it on a good set of sticks is not bad at all. That being said I've let others shoot it and they seem to really struggle. I don't claim to be an expert shooter, but I do try hard and practice mechanics a lot. LMAO. I will say there is a marked difference between both my guns and this load. The Davenport with its old school stock design adds a lot of movement to the rifle at the same weight.
......Interesting conversation, really enjoyed the thread.
