I would be concerned about the 500 BPE action as far suitable for your 500 NE? But then, JJ would know.
Ya know that NIB 450/400 3 inch that Butch is offering is probably less than a sleeving job will set you back!
Rusty
We band of brothers!
[This message has been edited by Rusty (edited 04-28-2002).]
The advent of cordite and the Nitro Express cartridges brought about a search for better steels for the actions. The BP/BPE guns just couldn't take the pounding.
More improvements were made after WWII. For best quality regarding the strength of steel and even less weight for stronger rifles, one would probably best stick to 1950's and later manufacture.
An original BPE double should be treasured as is and used with BPE loads such as suggested in Graeme Wright's book: _Shooting the British Double Rifle_.
------------------
RAB
Therefore the two BIG issues with converting a BP to Nitro are:
1.) Action is almost certainly not reinforced and will therefore begin to shoot of the face ASAP with the Nitro loads. Although the old Jones underlever is a pretty tough if ugly (my opinion) and awkward lock up.
2.) The damascus steel barrels of the BP rifle are TOO WEAK at the muzzle and prone to rupture with Nitro loads.
Therefore to rebarrel with Nitro proofed barrels as this poster suggests only covers one to the two issues. However, if he can find a Gunsmith to perform the work, what can I say it is his money. I would buy a nitro gun to begin with.
Todd E
[This message has been edited by Todd E (edited 04-28-2002).]
But the action includes the chopper lumps (demi-bloc) or mono-block. The lumps are integral to the barrels in the former, so I feel that action steels must surely have been improved also. The bearing surfaces of the action have to be of equal quality on both sides of the joint or they will be quickly ruined and go off face.
I would think it absolute folly to convert a BPE to NE. Shoot it and use it as it is. Swoon over it like Ross Seyfried does.
------------------
RAB
If we were all of the same opinions, there would be only rifle made, so what ever blows your skirt up, go for it!
------------------
..Mac >>>===(x)===>
also DUGABOY1
DUGABOY DESIGNS
Collector/trader of fine double rifles, and African wildlife art
[This message has been edited by MacD37 (edited 04-29-2002).]
Glad to see you back. Hope all your concerns became small ones.
Will
------------------
Ray Atkinson
Not to argue but chopper lumps are part of the barrel. The monoblock is I suppose one could say part of the action. I was speaking in general terms in my previous post. It was not my intention to split hairs. I have seen believe it or not BP doubles built in the 20 century that simply needed to be regulated for Nitro loads. These rifles were built as BP because the original owners must have felt that in the tropics (or where ever they were) the BP was safer than cordite. These "special" BP guns were identical to their nitro loaded counterparts in all ways except their regulation load. If he could find one of these animals the cost would not be as great (he would only have to reregulate).
If the action is soft it must be case hardened for the nitro load. This will almost certainly distort the action and possibly ruin it.
So I will say it again. Buy a nitro proofed gun and forget the BP conversion. If for no other reason than to reduce the stress in your life.
Todd E
Todd E,
Yep, some old fogeys insisted on BP loads with newer guns around the turn of the century, the thinking being that the BP loads were less heat sensitive than cordite.
Still, with all the uncertainties and expense involved, the question of converting BPE doubles to NE doubles is really only academic, regardless of destroyed collector value if this were undertaken.
A BPE double is the only kind of BP firearm that could appeal to me. It would be a pity to sacrifice a good one.
------------------
RAB
With todays technolgy it seldom if ever happens that an action is ruined ...Rick Stickley has had about 100 Browning BSS's hardened without incident, and Echols has all his Mauser actions hardened..The trick is you soften them, shape and polish them while soft and then re-harden them according to D'Arcy..I have had a couple of actions done in this manner and they were fine.
------------------
Ray Atkinson
quote:
Originally posted by Todd E:
RAB,Not to argue but chopper lumps are part of the barrel. The monoblock is I suppose one could say part of the action. I was speaking in general terms in my previous post.
Todd E
CHOPPER-LUMP, and DEMI-BLOCK are the same thing! The only difference between the two is the name. Chopper-lump is the name given by the British, and Demi-block is the Europien (actually the French, meaning "Half block") name for the same thing. You are right the Mono-block is a solid piece fitted to the action, then the barrels are sleeved in, and actually is stronger, if done properly, than chopper-lump. The Mono-block, after machineing, can be hardened to far greater tensel strength than the lumps on the barrel steel, which must remain ductile. If I'm not mistaken, and I could very well be, the MONO-BLOCK system was first used, in new guns, by Barretta, but the idea came from the gun smith's practice of cutting off old barrels, and sleeving in new ones on the old barrel butts, to avoid all the fitting, which had already been done.
Thanks Will, but I'm not really back, just had a day, or two, at home, and lurked the net some, and couldn't stay out of anything "double" you know how that goes. We still have no news with the transplant for my daughter, and she is failing fast.
------------------
..Mac >>>===(x)===>
also DUGABOY1
DUGABOY DESIGNS
Collector/trader of fine double rifles, and African wildlife art
Best Regards,
------------------
RAB
Where exactly did I say that chopper lumps and monoblocks are the same? They are two very different things. Thanks for the explanation Mac, but it was wasted on me I already knew that. I was only trying to explain to RAB that chopper lumps are in fact part of the barrel forging.
Todd E
I said the chopper lumps were integral to the barrel, and before that I did say the lumps were part of the action. They certainly are. The bearing surface on the lump that mates with the hinge pin and the bites in the lumps that the underbolts lock into (fasteners) are part of the action. Thus the chopper lumps (demi-bloc) are definitely part of the action, but they are integral to the barrels.
The mono-block is indeed a separate action part until it is sleeved onto the barrels.
This is really a very simple concept.
------------------
RAB