Thanks for the info guys! Have a mount on the way. Going to order a Burris fast fire 3 Tuesday. Excited to get this thing in operation! Any suggestion on a company to go with for a heavier recoil spring? Me being new to the 1911 world I am on a learning experience trying to get this thing the way I want it.

indeed it is ! I have been on the horn with the good folks a Brownells and they have got me a couple good options for the mount. I guess all that is left now is to spend around $400 and see what happens !

thanks! I will look in to it for sure!

have been looking the Burris fast fire 2 as well as the venom. trying to find a few more cost effective options but I understand that you usually get what you pay for with these kinds of things.. I have read a lot of good and bad reviews. the bad reviews make me skeptical of spending that kind of money on something that is going to be destroyed after 30-40 rounds of heavy hunting loads.  I will be shooting this gun ALOT as I will bear and deer hunt with it as well as waste 100 to 200 round a week of target ammo so I want to make sure I am going to get something that will last. the Burris has a lifetime warranty but at the same time I don't want to have to take a broken sight off every two weeks and send it back to get it replaced and not have my weapon ready to roll in the down time. 

I have a RIA rock ultra 1911 FS. trying to put a holographic sight on this thing! I am having a hard time finding the mount that replaces the rear sight to put the sight on. any suggestions? and am I wasting my time with a slide mount optic? will it hold up to repeated battering of the hot underwood or buffalo bore ammo recoil? I am in the process of ordering a heaver recoil spring now hoping that will help some. Thanks for any information/ suggestions in advance ! 

Sounds like underwood is going to be the choice for sure! Thanks for the feedback guys! Y'all are an awesome!

complete penetration would be preferred. may just be my preference but my way of thinking is two hole bleed more than one.   9 time out of ten the hounds are not actually on top of the bear. most times they are within 8 or 10 feet either trailing or baying. but there are times when you have 8 or 10 dogs on a bear and they get it stopped, you have to get close enough to pull the dogs off the bear to shoot it. that would be the only time I would have to really be worried about a pass through. but at that range you are usually are shooting down on the bear and a pass through would hit the ground underneath.
but I would like to hear opinions and weather or not a hollow point expanding bullet that does not exit would be more effective in stopping the bear quicker. or a good placed shot with a hard cast bullet.
every bear I have ever killed up until this point has been taken with a .35 Rem. or my .375 H&H. neither of which lack in energy upon impact so I have never put much thought in it, always just bought the largest chunk of lead I could find and try to make the biggest hole possible.
and I will apologies in advance for my spelling and punctuation. to busy chasing bears and wing shooting to go to English class 

Thanks Shadow! after reading multiple reviews on the underwood ammo, that will probably be what I end up with when I am looking down the sights at an old boar bear. But in the interest of science (or my love of shooting my new sidearm) I am going to try other brands as well.
I certainly appreciate the warm welcome to the forum as well ! I look forward to seeing what everyone has to say about this awesome round! 

thanks for the friendly and helpful information ! I have worn the razor dobbs videos and several others out on youtube and after watching them again and again I get more and more excited about the new obsession I have for the 10mm. I have always been a avid shotgun hunter but I can now see myself leaving the long guns at home and perusing this new passion. currently picking through your ammo suggestions and will probably order a few boxes to try based on that. hopefully come October I can report back with a 400 to 500 pound bruin on the ground as a result!
on another note. pondering on the idea of a holographic mini sight. any suggestions? I fear that even expensive brands like trigacon will not take the punishment the 10mm will put it through for very long.

so I just bought my self a rock island (rock ultra) 1911 in 10mm. I bought the gun because I have always wanted a 1911 and also wanted a backup bear gun. the more I shoot the gun the more I want to use it as my primary weapon. my application Is black bear in western n.c. with dogs. the furthest I will be shooting is 30 yards with most shots being less than 10 yards or closer. now, my questions. am I expecting to much from this weapon? an injured bear is fatal to my hounds and I do not want to get my dogs killed. shot placement I am sure is key as with any weapon. my real question is has anyone taken larger game (bear, elk, stc) with the 10? and what ammo is the best for larger game. I am having a hard time selecting the right ammo. torn between heavy hard cast flat nose like the double tap. or a good heavy bonded hollow point? any recommendations would be greatly appreciated. and would love to hear any first hand experiences