MMACFIVE
Members-
Content Count
661 -
Joined
-
Last visited
-
Days Won
1
Content Type
Profiles
Forums
Calendar
Everything posted by MMACFIVE
-
The load data seems awfully optimistic. Lets say it 3 grains less than the 65 SAUM. I think hat would give it about 62 grains of capacity when loaded with a 143 gr bullet. The 6.5x284 is around 58 and the 264 win mag around 79. With the numbers they are throwing out the 6.5 PRC will nearly equal 264 WM velocities with 17 grains less capacity? That doesn't feel right to me. There is a general rule of thumb that you get velocity increases that is about 1/4 of the case volume increase. At an 8% volume increase for the 6.5 PRC that would mean about a 2% velocity increase over the 6.5x284...or around 3050fps (at equal psi that is). Lets give it 100fps and that will give us about an additional 75 yards of real world improvement. That's pushing 1200 yards while still having 1000 ftlbs of energy. I know differences like brand of case, COAL, chamber dimensions, barrel dimensions, etc. will affect an individual rifles velocity. But it all averages out in the end. I'm just feeling that there is some marketing hype going on here. I'm sure the cartridge will be hot-rodded and some will actually get those velocities and then some, but any cartridge can be hot-rodded. I suspect that the accuracy node is more based on the velocity of the bullet not the cartridge? The bottom line is we have a new short action 6.5 cartridge that will exceed 6.5x284 velocities. If I were doing a custom build and wanted a short action I would throw it in the mix with the 6.5 SAUM and 6.5 WSM. Having said all that I am a gun nut and am really excited when the industry introduces new things. It is a form of evolution where we all benefit. For example I now have tons of 28 Nosler load data with the newest powders that I can leverage for my 7mm STW.
-
On Honady's website the factory 6.5 PRC 143 gr ELDx is 2960 fps. Their 6.5x284 with a 143gr ELDx goes 2940 fps. So maybe my 30-50 fps was generous?
-
This seems like an extremely niche cartridge. It will only be 30-50 FPS faster than a 6.5x284 (or 6.5-06). There are years of load development for the 6.5-284 out there and Lapua brass. Maybe the 6.5PRC will be a better short action cartridge though?
-
New barrel breakin sequence, lets hear yours......
MMACFIVE replied to Lazy-H98's topic in Rifles, Reloading and Gunsmithing
http://www.rifleshootermag.com/gunsmithing/break-rifle-barrel/ -
New barrel breakin sequence, lets hear yours......
MMACFIVE replied to Lazy-H98's topic in Rifles, Reloading and Gunsmithing
About as narrow minded and moronic as your post about the spotters. I assume you have evidence that suggests your "method" of doing nothing is just as good, doesn't shorten barrel life, or decrease accuracy? Probably not, probably just more narrow minded thinking from someone who doesn't realize how little he actually knows. Ouch. That seems a little harsh? I'm starting to agree with Big or Bust: KISS. I can find many articles out there that say the best break in is to get bullets down the bore. I had a custom 6.5x55 I meticulously broke in because I didn't want to take a chance. It wouldn't shoot worth a crap....then after about round 200 it became one of my best shooting rifles (same loads, same bedding, same scope, etc). I seriously doubt that you can find an objective article that shows that a rigorous break-in helps. It would take 25-30 barrels of identical manufacture broke in both ways and each shot hundreds of rounds to statically show an objective comparison. I've never seem that done. I hope someone has and can point me to the article. -
6.5 creedmoor starting point
MMACFIVE replied to ctafoya's topic in Rifles, Reloading and Gunsmithing
IMR 4451 splits IMR 4350 and H4350 in burn rate. So yes, it is almost a direct replacement for IMR 4350. https://www.hodgdon.com/wp-content/uploads/2017/09/burn-rate-color.pdf -
6.5 creedmoor starting point
MMACFIVE replied to ctafoya's topic in Rifles, Reloading and Gunsmithing
We have had exceptional results with all the IMR Enduron powders weve tried (4451, 4955, 7977). Not only are they temperature stable they have their copper fouling eliminator technology. IMR 4451 is almost a direct replacement for H4350. The Hodgen rep at the Shot Show said he wished more people would switch from H4350 to IMR 4451 because of availability. Im trying to get my hands on 8133 (retumbo speed) for my STW. -
twigsnapper is right. They won't replace either my 12's or my spotter. They are very specialized but they are simply amazing when you need them; like during that mid-morning when things slow down and you want to pick things apart at 1 - 2 plus miles. Friends laugh when I set up my 95 and my BTX on a dual mount....but it works for me.
-
Heat waves are heat waves. I dont think Swarovski is any worse then anything else. We compared the 65mm & 95mm module to the Swarovski 80HD with both the 25-50 and 20-60 eyepieces. We felt the resolution was better with the ATX. Maybe this is because of the eyepiece rather than the objective? I do know when you have the light to use 70X with the 95mm it is simply spectacular.
-
Just read in a post on a bullet failure that ...the bullet was going way to fast and went right through. He was describing bullet failure with a traditional cup and core bullet. This is something Ive read frequently in posts. Ive always believed that velocity is what initiates expansion and that a bullet wont fail to expand because of too much velocity. It might over expand, but it will expand (if its an expanding bullet of course). Is there any credible explanation too not expanding because of too much velocity?
-
Can a bullet go too fast to expand?
MMACFIVE replied to MMACFIVE's topic in Rifles, Reloading and Gunsmithing
I would suspect that it is because of the hide stretching on the off side from the bullet impact. The hide is very elastic and tough. That is the reason you often find bullets against the hide. There is video of the desert bighorn I shot of the hide stretching out a foot or more on the off side flank. We found the bullet against the hide. It actually knocked the hair off the hide where it stopped. -
Can a bullet go too fast to expand?
MMACFIVE replied to MMACFIVE's topic in Rifles, Reloading and Gunsmithing
Th first example is where a bullet over expands or grenades because of too much velocity (on a very frangible bullet) and the next two examples are lack of expansion from low velocity. I dont think its possible that a bullet will fail to expand because of too much velocity. -
Ive use one of these original VX-6s for several years. It is currently in the mail back to a leupold to have them install the two turn Z-Lock elevation dial and the Z-Lock windage dial. $90 for the elevation and another $40 for the windage. Also they will honor the cds certificate with the new dials. Ive had really good success and like the VX-6 scopes.
-
Ive use one of these original VX-6s for several years. It is currently in the mail back to a leupold to have them install the two turn Z-Lock elevation dial and the Z-Lock windage dial. $90 for the elevation and another $40 for the windage. Also they will honor the cds certificate with the new dials. Ive had really good success and like the VX-6 scopes.
-
The Leupold 1200 TBR works very well out to 900 yards or so. My Leica 1200 works to about 1200 yards but doesn't have inclination or a ballistic app. I got to compare 2 new Sig 2000's against a new Leica 2000b several times in the field recently. One of the Sig's would read farther than the Leica and the the Leica would read farther than the other Sig. The most consistent long distance I got from the Sig on trees was right at 2000 yds, the Leica 1950+yds and the other Sig 1850 yds or so (it struggled more that the other 2 to get this though...I'd sent it back). My conclusion: The Sig is simply amazing for the price and it is faster than the Leica. The Leica has far better glass, temperature and absolute barometric pressure. I like and bought the Leica.
-
Gunsmith in Flagstaff?
MMACFIVE replied to Hanksaiditbest's topic in Rifles, Reloading and Gunsmithing
(928) 607-3900 -
Swarovski ATX 25-60x65mm Spotter w/ Case **SOLD
MMACFIVE replied to DubTee's topic in Classified Ads
How much for just the eyepiece? If you separate of course.- 7 replies
-
- Swarovski
- binoculars
-
(and 1 more)
Tagged with:
-
How to get brass out of h&r single shot
MMACFIVE replied to Presmyk's topic in Rifles, Reloading and Gunsmithing
If the above doesn't work you can find the right size tap and start a few threads in the brass then use a rod from the bore. -
How to get brass out of h&r single shot
MMACFIVE replied to Presmyk's topic in Rifles, Reloading and Gunsmithing
If the above doesn't work you can find the right size tap and start a few threads in the brass then use a rod from the bore. -
And a few Hornady's:
-
A couple of Barnes:
-
I've been wanting to do this for some time now. Remember Nosler Partition are designed to work between 1800 fps and unlimited and retain between 60 & 70% of their weight. Some were DRT. Some Traveled a ways. The WT went almost 100yds (the furthest).
-
Sold
-
I am not sure of the vintage but the serial number is 250797P. There are some light ring marks and a couple of minor scratches on the bell that I didn't even know were there until I started to list this. Otherwise this scope is excellent as used very seldom. I live in Flagstaff, Mike
-
Please help with Berger Accuracy
MMACFIVE replied to MMACFIVE's topic in Rifles, Reloading and Gunsmithing
Perfect! If lucky 'll get to try it this week.