I have a model 1917 Enfield rifle with a standard size action and want it rechambered to 577 Tyrannosaur it will have to be rebarreled and the bolt face will have to be opened.Where could I send it to have this done?Of coarse I have thought of buying a new rifle but I thought this would be the cheaper route.

Jax, the conversion also involves a great deal of magzine box and floorplate alterations if you are dealing with a standard 1917 Enfield. Throw in an adjustable trigger, cock-on-opening conversion,receiver bridge alterations, reblueing and custom stocking and it will cost you a fortune. Leave the old warhorse in original configuration, its worth more that way. It you are not too attached to it, sell it and put the money towards the new rifle.

Welcome to the forum. If you really want a T-Rex find someone who has one and buy it! This is sage advice! The old A-Square guns are still around and someone here was selling one not too long ago for about $2000. Research this decision carefully as almost all these guns are shot once, dropped once, sold once items. The brass is nearly unavailable and the recoil ferocious.
You can drop a lot of money into a 1917 Enfield not the least of which is that you need a P-14 bolt for this conversion. The boltface has to be opened up to .688 ( remember the P-14 bolt diameter is .700 which leaves you no virtually no rim), the rails will need to be totally re-machined, you will need a new Magazine box and follower as well as a magnum Extractor. That's the easy part. The action has to be opened up big time in the front( right up to the locking lugs) and back ( new trigger required). All of this will probably cost you about $1200 and if you find a gunsmith who has actually done this conversion before successfully, then its worth it. Make sure it will feed properly and extract!
Now you have to find someone with a 577 T-Rex reamer who can chamber and fit the barrel for you. Figure about $500 for this. Now you will need to have a stock made that will take this level of recoil without splitting ( double recoil lugs and all that). Figure $500 for this. Of course you will also need Iron Sights and perhaps a muzzel break. Figure another $500. Looks like you just invested $2700 in a gun you might not like. Oh, I forgot you will need reloading dies and a press capable of handling this cartridge,Figure another $300. All this for a gun and cartridge you will probably become afraid of in a very short period of time. I'm really not trying to discourage you, just providing you with some experiences. I am finishing up a 585 NYATI right now and have been through alot of issues with it. Even I won't go for a T-Rex and I have the capability to do one on my own. Hope this helps-Rob

Jax,

the easy way to go (if there any?) is to buy a truvelo action made for the 577 Tyrano. It will cost you about 1400 U$. You can get it as a barelled action for little more.
Contact Jaco at armoury@truvelo.co.za.

I've done a few 14/17 actions, and they really aren't the cheapest way to go. However, they do allow you to do the job piece by piece as funds become available. The more work you can do yourself, the better off you are. However, the 577 really stretches the parameters of this action. I think you would be better off getting a larger action for this cartridge. Can it be done? Yes. Is it a great deal of difficulty? Also yes. But, it's your rifle and your call, if you want one bad enough, and you want it on that particular action, go for it. Just realize going in that this is a major undertaking. FWIW - Dan