Ok here goes. I have a ruger 45/70 walnut and blued steel. Don't use it much anymore and since I'm just punchin hoes in paper i figured that the folks here would be able to tell me what are the pitfalls there are if any doing this conversion process. I'm assuming that alterations would have to be made to the exractor at the least.Si if anyone has heard of this conversion I'd be very happy to hear from you.thank you,Frank