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Expander ball newb question

I have a rcbs matchmaster FL (bushing) sizing die. It has a decapping pin with an expander ball threaded into it.

Does anyone actually use that decapping pin/expander? Doesn’t it kind of defeat the purpose of a bushing ? What am I missing? I have just removed it all together.

My process is to use a universal decapping die to pop the primer, tumble, then a FL sizing die (shoulder bump of .002”) with proper bushing size, and then an expander mandrel to open the neck back up.

I am reloading precision ammo for prs, not bulk ammo .

Question for machinists manufacturing ARs

Hello all,

I was an active member on this site about four years ago, but have been caught up with life and fell out of the sport for a while. Getting back into it and started a new account (can't remember my old account details).

I remember having some conversation on here with a machinist or two who was a manufacturer of AR receivers, but don't know if any are still around. I've got two questions. The first question is how do you all manufacturer matched receiver sets? I'm not talking about one of those nylon tipped screw things and calling a set a matched set, but an actual matched set without a gap or rattling. I was thinking the order of operations would be something like (prior to anodizing and drilling the take down pin holes), mate lowers and uppers to see if they fit together without a gap, and the ones that fit go to the next op where the pin holes are drilled (with the upper and lower clamped together), chamfered and de-burred. Then sent to anodizing. Is this the typical process?

The other question is regarding critical call outs. What are the critical dimensions of both the upper and lower receiver? I have a receiver that I've had issues with for years. I ended up completely stripping the thing and throwing all the parts onto another lower and the problem resolved itself. I mean I bought a new lower and put every part on the other lower and the issue of failing to lock the bolt back on the last round (with subsonic 300 blackout) was no longer an issue. I thought maybe something was just installed wrong initially or maybe a foreign object/debree was causing the problem , so I put the parts all back on the lower with the problem again, and same issue again. I read something on the White Oak website saying one culprit could be the bolt catch. Something about how if it's located wrong it could cause rubbing or something and slow the bolt, so maybe that's it, but really just looking for a list of what tolerances are highly important overall. At this point I'd consider the lower scrap if it wasn't a form 1...

Thanks in advance

Considering new press

I’ve got an RCBS Ammomaster that was my first press and I intend to keep it to load for my M82. I then bought a Dillon XL750 to load mainly bulk 9mm, 556, and 308 and have separate heads for each. The problem is that I’ve never been able to get the primer system to feed reliably and I’ve taken it apart, adjusted, and cleaned more times than I can count. Dillon helped me at one point, but as soon as I switched from pistol to rifle it wa right back to not picking up primers or shooting them across the room, or not seating them deep enough, and dumping 41 grains of TAC into the machine each time a primer doesn’t feed and I don’t catch it. I bought the Armonov block which helped for a while, but I’m done with it. I plan to prime cases off of the Dillon and then just feed primed lubed cases into the casefeeder.
Then I saw the Redding T7. That looks like it could save me a ton of time on my match grade stuff over the Ammomaster. My questions are… how does the primer fed system work? Does it auto feed them? I would be loading primarily 308 and 338 Lapua and would love not having to drop each individual primer into the primer cup.

Thank you!!

Optics 3- leupold mark 5 5-25 pr-1 moa with spuhr/hawkins mounts

3- leupold mark 5 5-25x56 pr-1 reticle. All glass is excellent as is scope bodies. Very slight marks at the most. One is in Spuhr sp5001 mount. $2000. Next is in Hawkins heavy tactical one piece mount with diving board and level. $1900. Last (I believe) is Hawkins ultra lite tactical 1” high rings with offset level top ring. $1750. I only have two sun shades so those will go to whoever wants them first. I would sell bare scopes for $1600. Would also sell mounts separate if wanted. Just reach out prices are shipped conus with PayPal f&f.

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USMC M40A1 Return Stock Case Study (The Progression of McMillian Stocks)

Hey guys if you know me I'm always researching in the National Archives for Marine Weapon info. I've been hitting the National Archives lately on the M40 series of rifles and I've been able to find a lot of new info on them.

One thing I have found at the National Archives (that I'm really excited about) is how to date M40A1's. So if you have a Return stock, if you give me the last four on the stock I can date it. Before anyone says anything, it is possible stocks were swapped, but this does not seem very likely by the docs. In seems rare a stock was swapped. But this case study will see if I am correct.

After seeing the post on the new run of smears and seeing all 50 stocks in one post, I thought this would be a lot of fun to do the same kind of post on the Return Stocks.

If you guys post your return stock (with a similar angle side shot as those below) I will take the photo, edit it, and then put it into this post in order. I just think it would be a lot of fun to put the stocks in order and see the change of McMillian over time. :) Like for instance they say the earliest were more green. We can now see if that is correct by charting it.

So to get this started, a few of the ones I've seen lately. If you have one, please add it to this post with the last four of the serial. If you want to be private, just message me the info and I can add it publically, or I will keep it private for my own research. Whichever you prefer.


June 1977
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August 1977 (Skunk)
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Sept 1977
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Sept 1977 (Skunk)
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March 1978 (tfont48)
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Sept 1979
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Painted Smear, Feb 1980
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Oct 1980
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Sept 1980 (Sniff, number only on buttplate, "Avail" written in the barrel channel)
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Aug 1995 (only a partial pic)
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Dec 1999
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Jan 2000 Painted Woodland
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May 2000 (Random Guy)
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July 2001
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What Does the Inside of a Truly Dirty Silencer Look Like?

What does a dirty silencer look like? I mean a silencer that really needs cleaning?

I have two silencers, and I have only used one so far: a Banish 22. I have probably run 200 Mini-mags through it. Someone somewhere told me it should be cleaned at around this point.

I opened it up, and I would guess there is around a tenth of a gram of crud in it. I looked at some sites describing the problems with dirty silencers, and they said one issue was the weight of the crud. Since there is nearly no crud in my silencer, my best guess is that I am nowhere near the point where it actually needs cleaning, so the real must-clean round figure is probably more like 20000 than 200.

But I don't really know.

I know this: CLR really does work without scrubbing. It knocked the carbon off my baffles with no effort. I got a jug, and I'm going to use it for silencers and nothing else. I'll soak the parts in it and pour it back in the jug, I'll reuse it until it quits working. I tried ammonia, citric acid, and Oxy-clean, and they did nothing. I haven't tried powdered brewery wash, which removes nearly anything, but it's expensive.

Awesome suppressor muzzle brake front end attachment by Recoilx

Shot a match with the owner of recoilx this past fall where he had one of his prototype units and it caught my interest. I had a chance to buy a unit this last week and took it up for some testing.

Overall it performs really well... obviously slight noise penalty but very effective. I felt like it was pretty close to the best of both worlds between shooting fully suppressed vs just a brake only.

I was able to stay on target in the glass through the full recoil off a few positions and can't wait to try it on a bigger 30 cal soon.

I was using a silencerco hybrid 46 with their 30 cal self timing brake.

On a gas gun 223 it had noticably less back pressure than just my front end cap alone which I thought was interesting.

Seems like a legit option for those of us with cans already vs buying something like the maverick straight up. I have been primarily shooting a tbac can but will probably run a can with a Recoilx brake on it this season.

Not affiliated in anyway with recoilx but I think the owner is a stand up guy from my interactions with him and I like supporting solid products from good folks.



@RecoilXBrakes

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SOLD Impact 737 6GT Stuteville Foundation Leica

Complete rifle, everything new but action, which has a few hundred rounds

Impact 737 short action aics cut

Stuteville precision Bartlein M24 26” 1:7.5 twist 6GT cerakoted by Stuteville black

Foundation Exodus with short arca rail

On the mark bottom metal with MDT 10 round mag

Triggertech diamond curved

Leica PRS 5-30x56i L-4a reticle

$3500 shipped for rifle my FFL to your FFL

PP FF/Venmo/check or money order til clears

Bipod not included nor for sale
Scope/Rings not included

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Maybe Hinchchcliffe was right...


“There’s a lot going on, like, I don’t know if you know this but there’s literally a floating island of garbage in the middle of the ocean right now. Yeah. I think it’s called Puerto Rico.”