Hand loaded ammunition declaration

[Pete]

Using handloads without checking the MV, whether following a manual or not, is taking a bit of a risk, IMHO.
This is probably one of the reasons the manuals err on the side of caution.

Pete

[FredB]

If you attend the Historic Arms meeting or the Trafalgar, there are dozens of obsolete calibre rifles in use for which neither factory ammunition or reloading data is available. No problems have ever been encountered, although I recall a Remington Rolling Block rifle being blown up about 20 years ago in a practice shoot---incidentally, the action did not fail, what blew was the chamber area of the barrel. Safety in hand loading is exactly the same as it is in shooting generally. You do not take risks, start low and work up, if you need the higher velocities, read, learn and consult the proven experts at every stage.
Most reloading problems occur because of procedural errors such as double charges or no charge. Using a proving system for the load data does not protect against this.
Fred

[dromia]

As regards the NRA insurance it isn't about hand loading safety it is about being within the range certificate limits. Even factory has to go over the chronograph as some "pistol" rounds that would be cleared if we had an NSRA certificate would still exceed the ME/MV.

[Strangely Brown]

although I recall a Remington Rolling Block rifle being blown up about 20 years ago in a practice shoot---

I believe a Shiloh Sharps scattered itself around Century range a couple of months ago.