The UK's Finest Independent Forum for Shooters and Gun Owners. Est 2010.

I bought an Arisaka Type 99 rifle in 2000. It had just been imported from the USA and had to go to proof before I could collect it from the dealer. The proof house issued a proof exemption certificate as they did not have a proof round to proof it with. They just examined it and marked it as not fully proofed. Other Type 99s have been proofed though.
Regards
Peter.

Mattnall wrote: ↑Sun Sep 01, 2024 9:31 am The B'Ham proof house defintely loads their own ammunition and tests the ammo first to get the performance they desire.

I understand they look for a percentage pressure over the standard CIP loading, or possibly one of the other 'standards' out there, and then use that.
I had a tour of the ammo facility there and there is not much they couldn't load. They managed to work out a load for me to match my pet loading but using a different powder (curse you REACH) and the performance so far on the range is exactly the same between the two.

I did a tour of Birmingham Proof House and they do make their own proof loads. They appeared to have dies for every calibre, it was a very impressive quantity of dies on the shelves.
There is the idea that the proof load is overloading and stressing the gun and it is only designed to take the standard CIP loading. The gun will have a design factor of safety of 50% over the standard load therefore it should be more capable of taking 30% over CIP proof load.

And if you really want to get your gun re-proofed after getting it threaded etc, don't let a dealer or gunsmith take it in for you. I live in Brum so it was a breeze to take my rifles in myself.
Took three rifles in to be proofed; .308win, .243win and .223rem. I'd had all three cut for moderators years ago, but then thought, what happens now, at my age, if I want to sell anything without that compulsory proof mark.
Cost just over £100 for all three because I took them there myself. If I'd given them to a gunsmith to cut and take them to be proofed the cost would have been double.

Graham M wrote: ↑Tue Sep 03, 2024 8:02 am And if you really want to get your gun re-proofed after getting it threaded etc, don't let a dealer or gunsmith take it in for you. I live in Brum so it was a breeze to take my rifles in myself.
Took three rifles in to be proofed; .308win, .243win and .223rem. I'd had all three cut for moderators years ago, but then thought, what happens now, at my age, if I want to sell anything without that compulsory proof mark.
Cost just over £100 for all three because I took them there myself. If I'd given them to a gunsmith to cut and take them to be proofed the cost would have been double.

Great idea

The proof laws only relate to the selling or gifting of firearms . If, for instance you are skilled and have good machining skills you can rebarrel a rifle for your own use thus not subjecting the receiver to overburden stresses . My old Winchester 70 has been rebarreled 3 times by me in the almost 40 years that I've owned it. there have been others , Provided I either hand them to an RFD or the police at the end is up to me ,no one else .At my age I suspect I will be giving up shooting shooting and all my rifles will go to my local friendly dealer ,it's then up to him whether to proof for resale or scrap.

hobbesy wrote: ↑Sun Sep 01, 2024 9:26 pm
I would be right to understand that they would have done countless AR straight pulls, and know exactly how to load a round by releasing the handle and not pushing it forward like a bolt.

They know.
But it won't make any difference, if the bolt is not closed fully (by whatever method) it will not fire.

Mattnall wrote: ↑Wed Sep 04, 2024 12:45 pm

hobbesy wrote: ↑Sun Sep 01, 2024 9:26 pm
I would be right to understand that they would have done countless AR straight pulls, and know exactly how to load a round by releasing the handle and not pushing it forward like a bolt.

They know.
But it won't make any difference, if the bolt is not closed fully (by whatever method) it will not fire.

That's exactly what I thought and ultimately what Eugene Stoner designed.