Are any of you guys using a bore rider throat? Seams like an accuracy minded version of the weatherby free bore? After countless hours of searching and reading here is what I have come up with:7mm RUM set up for 195 Berger EOL's using a bore rider throat with the first step @.220, the second at.750 with a 1 1/2 degree lead angle. With the reduced pressure of the longer throat higher speeds should be attainable? And according to Kiff he has some shoots in the winning circle using them?I have had custom reamers made with bullet specific throats and neck dia. In the past but have no real world experience with bore rider throats, so please school me.Thanks, ingotoutdoorsSo I asked this question in the lrh section and received zero feed back?
Chambering a 50 Caliber Rifle Barrel There is, in my estimation, a shortage of accuracy minded gunsmiths capable of, and willing to chamber 50 caliber rifle barrels. While I’m no longer involved in the gunsmithing end of rifle barrels, I do know a little about the subject and thought I’d pass on what I’ve learned. Dec 13, 2006 Machine shop built 50 cal chambering reamers; Likes: 0. Results 1 to 7 of 7 Thread. 3 reamers for a.50 would be for ROUGHING, roughing, and final ream( or might have a throating reamer ), A lot of metal to remove for a reamer in one shot. Dimensions in front of you, it lays out the tapers and radii in relation to each other.
Are any of you guys using a bore rider throat? Seams like an accuracy minded version of the weatherby free bore? After countless hours of searching and reading here is what I have come up with:7mm RUM set up for 195 Berger EOL's using a bore rider throat with the first step @.220, the second at.750 with a 1 1/2 degree lead angle. With the reduced pressure of the longer throat higher speeds should be attainable? And according to Kiff he has some shoots in the winning circle using them?I have had custom reamers made with bullet specific throats and neck dia. In the past but have no real world experience with bore rider throats, so please school me.Thanks, ingotoutdoorsSo I asked this question in the lrh section and received zero feed back? Click to expand.Probably the reason you haven't had any feed back is because this is an experimental processand it can cause as many problems as improvements.What Little I know about it is that it's supposed to replace extended freebore with partial rifling.Free bore is not an issue if properly sized ammo is used in a true concentric chamber, Plus it helps control Pressure.
This system of minimal rifling for part of the free bore Is like having very slight lead angles (Less than 1o) that will cause poor initial engraving on the bullet on high velocity bullets because of starting torque.On less powerful lighter cartridge/bullet combinations like bench rest use, it may work ok, but lead angle is very important to get good engraving on the high velocity, heavy bullets that we use.J E CUSTOM. There are a number of what is being called bore rider throats, some have a more complex geometry with differing angles and some are just cutting two hight lands for a distance but the same lead angles. They've been in use best I can tell since the 80's. It's an interesting thing, I've seen a number of what would be a moderate chambering toast the throat out in very low round counts.
There are a number of what is being called bore rider throats, some have a more complex geometry with differing angles and some are just cutting two hight lands for a distance but the same lead angles. They've been in use best I can tell since the 80's. It's an interesting thing, I've seen a number of what would be a moderate chambering toast the throat out in very low round counts.
Think of it as a normal throat then cut a length of the lands away then bring it to full diameter is a given distance, there is some geometry veriations in how this is done but the effect is basically the same. So you end up with half the normal land hight, less steel less life faster progression of the throat. At least that is how some have played out, that's why I'd use it judisiously. There is a custom rifle builder that makes his own barrels and he does essentially the same thing but he does it during the reaming of the barrel then you cut the chamber and you have that second step already established.
There are a number of what is being called bore rider throats, some have a more complex geometry with differing angles and some are just cutting two hight lands for a distance but the same lead angles. They've been in use best I can tell since the 80's. It's an interesting thing, I've seen a number of what would be a moderate chambering toast the throat out in very low round counts. Click to expand.Thanks!Its nice to hear it from someone that I trust instead of theory and hearsay. The only dealings I have had with it was the bullet engraving issue and we solved that by running a standard reamer in the chamber.We stilled ended up with a long freebore, but the rifle started shooting 1/4 MOA immediately.
The rifle was never shot enough to see the early throat erosion potential. We also saw no difference in velocity but that was to be expected with the amount of freebore we had.I hope the poster does not have any of these problems and gets the performance he wanted.Very interesting post.J E CUSTOM. About usMy family and I welcome you. I started LRH back in 2001 to provide a friendly place where like-minded individuals could share information and ideas to help take their long range shooting and hunting to the next level.
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We have developed quite a stash of chamber reamers over the years while building custom barrels.If you do not see the chamber you are interested in this chambers list, feel free to give us a call and we can see what we can do for you.We take our sweet time in the chamber reaming process. We make sure our chambers are properly aligned and correctly headspaced. Also, none of our pistol chambers use the SAAMI forcing cone throats, rather we separately add a tight cylindrical “rifle” type throats with 1.-30 lead angles. This ensures proper bullet alignment to the bore and grooves without any radical jump. Offers an excellent array of brass in both modern and odd-ball cartridges, check them out for your brass needs!For those who hand load and take full advantage of the single shot capabilities of not having to fit their rounds in magazines or blind mag boxes, we offer custom chamber services at no extra charge. In most cases, we can ream chambers with specific neck diameters and throat lengths to accommodate custom hand-loaded ammunition.
Please feel free to give us a call and we can get your barrel built exactly how it should!