fmsniper Posted June 29, 2011 Report Share Posted June 29, 2011 I put my 20 inch POF for sale its a great gun, but it shoots as good as may DPMS 24 inch, so I figure I can use the money for a SCAR17 in the future, anyway, so I decided to build a DPMS LR 21inch barrel by taking a 24 inch stainless HB and cut it down to 21 inch then re-crown it, I already own a 24 inch DPMS LR, so I will use the same lower and bolt carrier but a new bolt, I already have all of the parts and just ordered the barrel, should be interesting having a 21 inch barrel. primary purpose is hunting rig while walking, deer hunting out to 600 yards. My 24 inch has taken deer out to 725 yards so I figure this 21 inch should be fine?my 24 inch Quote Link to comment Share on other sites More sharing options...
98Z5V Posted June 30, 2011 Report Share Posted June 30, 2011 I like it! <thumbsup> Quote Link to comment Share on other sites More sharing options...
imschur Posted June 30, 2011 Report Share Posted June 30, 2011 fantastic Quote Link to comment Share on other sites More sharing options...
survivalshop Posted June 30, 2011 Report Share Posted June 30, 2011 I don't see anything in the photo ! <laughs>Nice rifle & can't wait to hear how a 21 " bbl. shoots. Quote Link to comment Share on other sites More sharing options...
fmsniper Posted June 30, 2011 Author Report Share Posted June 30, 2011 Hoping it does well, I haven't seen one in21 inch so I figured I would try it, seem s like an all around good hunting length Quote Link to comment Share on other sites More sharing options...
Jgun Posted July 1, 2011 Report Share Posted July 1, 2011 fmsniper, Maybe I'm confused, You say that you already have the 24" pictured and plan to use the lower and bolt carrier from that one, Correct? I've also had multiple uppers that I use by sharing one lower, but I go with dedicated bolt carrier groups so all I have to do is pop the pins and install the upper. You can even have dedicated optics, But do I understand you correctly that you will have a setup that will require you to switch bolts in your shared carrier in order to go back and forth with your lower and carrier? Quote Link to comment Share on other sites More sharing options...
survivalshop Posted July 1, 2011 Report Share Posted July 1, 2011 The reason I'm interested is how that length bbl. will perform. There are reasons bbls. are kept at certain lengths , but its not writen in stone . Quote Link to comment Share on other sites More sharing options...
fmsniper Posted July 1, 2011 Author Report Share Posted July 1, 2011 Yep I know 18, 20 24, but why not 22 or 21, normal hunting rifles are 22 inch, any how It will be done <thumbsup>barrel should be here today then I will get the Lathe later today or Tuesday, when I cut it I will put a recessed 11degree crown on it as wellJgun; I do plan to use the lower and bolt carrier from my 24 inch I also use dedicated bolts as they can conform to the barrel trunnion of each individual barrel so it its not wise to keep transferring them, but why spend the extra $$$ for a carrier and parts when they can easily be changed, as you only shoot one gun at a time? and each of my guns have their own optics, my 24 inch has a Burris XTR on it now and the 21 inch will us a 2.5 X 10 Vortex Viper Quote Link to comment Share on other sites More sharing options...
survivalshop Posted July 2, 2011 Report Share Posted July 2, 2011 M14/M1A have a 22" bbl. .STD.Like I said ,nothing written in stone , but it will have some thing to do with performance & accuracy.Is the twist of the BBL. 1-10 ? We are talking about a .30 cal bbl. ? Quote Link to comment Share on other sites More sharing options...
fmsniper Posted July 2, 2011 Author Report Share Posted July 2, 2011 Roger, 1-10, 308, stainless Heavy Barrel, I carried the M21 in 22 inch barrel last tour in Iraq, did very well, well bottom line is if it does not perform I slap it back on the lathe and pop off 1 more inch down to 20. Quote Link to comment Share on other sites More sharing options...
survivalshop Posted July 3, 2011 Report Share Posted July 3, 2011 Ya , most don't have a lathe or the expertise to do that , nice to have that option . I will be waiting for a range report, for sure . Quote Link to comment Share on other sites More sharing options...
fmsniper Posted July 3, 2011 Author Report Share Posted July 3, 2011 where I am stationed is a machine shop near by my office I use it and the Bridgeport often, to make muzzle brakes and face receivers, as well as cut new threads on barrel I am working on, so yep it is nice to have the toys available: wife wants me to take a NATO assignment to Northwoods that Branch is offering us next but I really am not interested in going to a country I cant bring my guns. Quote Link to comment Share on other sites More sharing options...
fmsniper Posted July 5, 2011 Author Report Share Posted July 5, 2011 got the barrel in today will hit the lathe in the morninghere is the upper its painted the same as my other, this one was in .243 I sold the barrelthis photo shows where the 3inches is going to be cut Quote Link to comment Share on other sites More sharing options...
fmsniper Posted July 6, 2011 Author Report Share Posted July 6, 2011 just got back from the lathe, barrel is cut 21 inch 11 Degree crown, will mount it tonight and shoot it tomorrow picked up 168 grain American Eagle Factory OTM for testingtop is the 24 inchbottom 21 inch11 degree crown Quote Link to comment Share on other sites More sharing options...
98Z5V Posted July 7, 2011 Report Share Posted July 7, 2011 where I am stationed is a machine shop near by my office I use it and the Bridgeport often, to make muzzle brakes and face receivers, as well as cut new threads on barrel I am working on, so yep it is nice to have the toys available: I miss that, more than just about anything - I had two phenomenal guys back at Ft Lewis. They could work wonders, make anything, modify anything. I hung out in there as much as possible. They were magicians. They'd let me take anything in there, and it didn't matter what it was - they could make it better. picked up 168 grain American Eagle Factory OTM for testingThat ammo has worked very, very well for me. <thumbsup> Quote Link to comment Share on other sites More sharing options...
fmsniper Posted July 7, 2011 Author Report Share Posted July 7, 2011 well 1st 15 rounds down the new barrel 1 and clean for the first 10, then this 5 shot group with American Eagle 168 OTM factory ammo, bottom shot was a called pull on my part.center to Center .763, I am sure it will get better as the barrel brakes inSo over all not to bad room for improvement, will leave it for a few and see if it tightens up, if not, will go to 19 inch Quote Link to comment Share on other sites More sharing options...
survivalshop Posted July 8, 2011 Report Share Posted July 8, 2011 well 1st 15 rounds down the new barrel 1 and clean for the first 10, then this 5 shot group with American Eagle 168 OTM factory ammo, bottom shot was a called pull on my part.center to Center .763, I am sure it will get better as the barrel brakes inSo over all not to bad room for improvement, will leave it for a few and see if it tightens up, if not, will go to 19 inchDo you have something against 20" or this all experimentation ?I assume this is shot @ 100 yrds., why not try this length out farther , 200,300 yrds. , after you break it in of course.I'm curious , ya got my attention, but I believe this has all been done before or documented some where .What is your goal , more accurate , lighter ? Quote Link to comment Share on other sites More sharing options...
fmsniper Posted July 8, 2011 Author Report Share Posted July 8, 2011 I already have a 26, 24, 20 and 18, in 308 just wanted something different, will shoot 400 yards this weekend, no goal, just having fun, and may use it for hunting this year, if I sell my 20 inch POFI sold my 26 it was too long, and sold the 18, too shortI have kept the 24" DPMS and the 20" POF, I think I may be on to a good barrel length for a hunting rifle in SEMI, but that's just me Quote Link to comment Share on other sites More sharing options...
survivalshop Posted July 9, 2011 Report Share Posted July 9, 2011 18 " too short ,why ? For hunting you would think a lighter shorter bbl. would be the ticket .Unless real long range would be the goal.Interested in the out come of range session @ 400 yrds. Quote Link to comment Share on other sites More sharing options...
fmsniper Posted July 9, 2011 Author Report Share Posted July 9, 2011 my shots here are out to 725 meters Quote Link to comment Share on other sites More sharing options...
Jgun Posted July 10, 2011 Report Share Posted July 10, 2011 I have a question for you regarding the 21" vs the 24". I see that the 24" has a muzzle brake. None of my AR's are crowned barrels without any muzzle device. Since both of your uppers are very similar other than the 3" difference and the brake on the 24, I was wondering if you could give me your subjective opinion on how much difference it makes having a brake vs a bare barrel? does the recoil of the unbraked one feel a great deal heavier than the 24"? Quote Link to comment Share on other sites More sharing options...
fmsniper Posted July 10, 2011 Author Report Share Posted July 10, 2011 not a great deal no but enough to get me back on target faster, I would say it makes a 3006 feel like a 308, thats the best way I can explain itHope this helps Quote Link to comment Share on other sites More sharing options...
survivalshop Posted July 12, 2011 Report Share Posted July 12, 2011 All barrels are crowned in some way ,threaded or not. Look closer next time you have your muzzle device off .His bbl. is crowned all the way out to the full bbl. dia.. Most are just crowned at the bore opening. Quote Link to comment Share on other sites More sharing options...
Jgun Posted July 12, 2011 Report Share Posted July 12, 2011 I'm aware that all barrels are crowned (or should be). I guess I didn't word my post clearly. What I was trying to state was that I didn't have an AR with just a finished unthreaded barrel without some sort of muzzle device. Since both of his uppers appeared to be almost identical, with the exception of the 3" extra length and the brake on the 24" I thought he'd be able to give me some good feedback on just how significant the effect of the comp was. This may be more a matter of my not being very perceptive when it comes to the effects of different brakes, but I often have a hard time telling if one is clearly more effective than another. I just picked up a comp (threaded for a .223) that I want to test on my 300 as soon as I bore it out for .30 cal and rethread it 5/8-24". This seems to be an area where there doesn't seem to be a great deal of scientific documentation to back up the claims that the mfgs make. Every one says that theirs is the most effective. Quote Link to comment Share on other sites More sharing options...
fmsniper Posted July 23, 2011 Author Report Share Posted July 23, 2011 heading out to the 1000 Yrd range tomorrow if it does not rain Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.