223 Rem COAL For Accuracy Determined
ฝัง
- เผยแพร่เมื่อ 26 ก.ย. 2024
- This video explores the determination of the COAL that gives the best accuracy not just presently, but also as the barrel wear occurs. All shooting was done at 100 yards. Let's head for the range....
Good day FC.
@HobbiesHobo - Yes, sir....Best Regards, Steve
Those Washington rockchucks don't stand a chance against you now. Thanks, Cookie!
@luvtahandload7692 - Indeed, time to load up a passel of those to have on hand ready ammo.... Best Regards, Steve
Great video. Like always!!! Thanks for sharing your knowledge
Great load development. Good Shooting too.
I found ram and cram work the absolute best for me in 22-250 50gr Amax in my M700. .002 neck tension loaded long, only neck sized annealed cases. As I cam the bolt closed the ogive of the bullet hits the lands, the datum line on the case shoulder is forced into the chamber wall, then the bullet gets pushed into the next. Same exact location every time. If i do my part consistently get .400 or under @100yards out of a 20 inch 1/14 barrel.
My opinion is the bipod causes some or your fliers. Try resting your forearm the same as you do your butt stock. On soft bags.
I agree, not the steadiest front rest.
@normanschreiber4182 - Strongly agree. No benchrest shooter uses bipods, but rather four figure front rests of the most stable quality.. Only reason I used it for this work is practicality. There may come opportunities to do some varmint shooting and even back in the 70s, we used Harris bipods in the rolling fields and foothills of Williams and Weed California where the ground squirrels and jackrabbits roam.. Thanks for the comment, Steve
Really need to get a 5.56 bolt gun to play with . If I single load my 20” AR with a few loads seated at 2.290-2.3 they are cloverleaf capable. As soon as I seat them to magazine length max of about 2.270 the same load gains 10-15 fps but is 1.5 or so moa, which is acceptable for my larping I will admit . But I just like to tinker . I am getting over 2800fps with 75gr hornadys with n540 with minimal pressure signs( occasional flat primers).
I'm not trying to criticize, however, you left us assuming that the groups were fired at 100 yards? if it was 50 yards the groups would be twice as big at 100, So you see what I mean. anyway, those Berger bullets are expensive and it is nice to see that you are putting them through a test. good shooting and good video - Dave
Dave - Thanks for posting, always great to hear from you, and I hope you've been very well. Sorry about that - indeed it was 100 yard testing - I went ahead and added that to the discription. My good load for this rifle with the Sierra MKs shot best at .009" off the lands, so it wasn't a surprise to me that the groups got tighter at .010" - made all the sense in the world. My benchrest shooting friends John, Nick and Mark actually swear by custom made bullets made by people I never heard of, but must be well regarded in the benchrest fraternity. All they ever shoot are small to tiny one hole groups with their 6mms. Amazingly, John told me during his last shooting session at the range that his brass has been shot 35 times (his brass is precious to him) ...the magic of annealing (and I know you anneal as well - something I have never done preferring to use new brass every 5X) and using sensible loads instead of the hair on fire stuff. Whereas, varmint shooters want all the fps they can get. Are you still keeping our boomers shipshape?? Have a great day, Dave.... Steve
@@FortuneCookie45LCWell. as far as my occupation, through advice of my Doctor and Surgeon they convinced me it was time to retire and move on to life after working for 41 years. the end of the month is my last day there. So, yup those guys that benchrest (Not being derogatory) have a special thing that drives them and it is a benefit to all of us for the pain staking work, time and expense that they put into that sport, crafting, experimenting through frustrating trial and error. (I couldn't do it) because it would tap out my mental resources, it's very extreme and intense. However their work goes on to manufactures and new rounds are invented along with load data, rifle actions, barrel configures, chamber dimensions and stock fitting. As with you, you could write a book titled "Where did all the Wadcutters go" and it would be a great read. anyway, thanks for the reply, and Great shooting to you. - Dave
Do you have a video on how one measures the distance off the lands ? And similarly, how you measure COAL ?
@happyhome41 - Yes, indeedy...turns out measuring the distance to lands has been shown to be tricky on the one hand, but then not really essential to nail it down perfectly on the other. But we do need a working distance to the lands. It is easily accomplished without the need to remove extractors ejectors etc. by using the Hornady LNL Over All Length Chamber Gauge available from any of our big onliness like MidwayUSA. Many will try using bullets and cases, but if your bolt gun is push feed, the ejector spring cranks the round on extraction messing up the measurements. The Hornady gauge comes in straight and curved. The straight is really all you'll need, but the curved will work for everything. Best to ya, Steve
@@FortuneCookie45LC Most kind sir, I have that gage, and would suggest this topic has earned a place on the list of those needing your expert treatment. Thank you.
What is a good ratio to use to cast 55gr 223, using range scrap. I know that 3lbs of range scrap w/1 lb super hard will get BHN 18. Is this good or do I need a higher BHN