soflarick

I really enjoy plinking with the 9 ar pistol, and it currently has a functional BHO feature. Bolt is from Rubber City with the weight intact. I've fiddled with buffer springs and buffers, and I'm currently using an Orange Sprinco and Taccom buffer. Feels like if I were to remove the bolt weight, the return to battery wouldn't bounce as much, but I've noticed the cases aren't as carboned up with the heavier spring and weight. Has anyone found a good trade-off setup? I can tinker on my own, but thought I'd ask here in case I miss something.

Same case brand/year, or random cases? That has an effect on the results because of alloy and neck thickness not being consistent among manufacturers. I rotate the case while pressing into the trimmer, then every so often run a q-tip through the case holder to clean off any debris or layer of schmutz that accumulated. I get pretty consistent results.

Test it yourself. Seat your bullet into a sized case you use, no powder or primer. Measure the cartridge overall length. Place into magazine, seat mag into rifle with bolt to the rear. Release bolt catch. Slowly extract the uncharged cartridge, and measure the OAL again. Did the measurement change? That will help determine if you need more neck tension or a crimp. I like to run the same cartridge a couple times to make sure the length remains the same.

LC brass. Deprime, swage, cut, wet tumble, anneal, size, trim. Found wet tumbling after sizing and/or trimming causes peened case mouth.

Reently completed a pistol 9mm AR. 7.5 oz buffer, longer supposedly for 9mm, 7.5" barrel. I tested 3 different buffer spring: JP tuned 223 carbine spring, 308 rifle spring, Tubb 308 spring. The standard 308 spring kept the bolt from going all the way to the rear, and was also the harshest on recoil and bolt reset; I assume coil bind, but the reset was excessive. The JP tuned spring was pretty good, no real complaints. The Tubb 308 spring had the softest (most pleasant for recovery) feel of all 3. Not by much over the JP 223 spring, but I could feel it. Did not use the timer to test. I'm still tinkering. The trigger is a CMC 3.5 lb 9mm unit. My understanding with blowback systems is that the springs, buffers (if used in that system), and hammer spring all have an effect on how quickly the bolt opens. Obviously, a system that keeps the bolt closed as long as necessary is desired, with the trade off being heavier springs and/or buffers. A delayed roller system, like the HK systems, is probably the best 9mm carbine shooting I've done. The MP5 made anyone look like an expert. BTW, the JP and Tubb springs allowed the buffer to fully enter the buffer tube. After reading this thread, I now understand why people try to limit travel. Perhaps one of those polymer buffer spacers at the back of the buffer tube would be a better idea than a stack of quarters. I'm surprised my buffer allows full retraction of the bolt, as it's supposed to be longer than a standard carbine buffer, and restrict full cycling of the bolt. I'm still playing around. I'm hoping to find a nice compromise so the return to battery isn't so jarring. The Tubb spring is supposed to have more seat pressure than open pressure, whereas the JP is supposedly 7% stiffer through it's range. THat is what I felt when comparing the two. Another question, not related to this subject: I'm using a standard AR upper and dedicated 9mm lower. No last round hold open feature. I found the manufacturer of the lower has a "matching" upper with the feature and side charging. Does anyone have feedback on those issues? It'd be nice to have the LRHO feature, and the side charger appears to keep the pistol engaged on target while manipulating the bolt, but I don't want to spend the 200+ if not really necessary. I will, though, if the features are worth the cost. I just don't know due to lack of experience in the matter.

Nevermind. Ghost has a warranty, so if a tab breaks, they'll replace free. Got them separated without issue. Ghost emailed warranty info just in case. Thank you.

If they offer it in 6.5x55.......oh dear.

What tumbling mixture are you using to achieve that result?

Bayou and SnS samples arrived. Going to use TG and WSF to find an accurate, soft shooting load among the 3 weights I chose.

Ordered coated 115, 135, and 147 samples from a couple places. I was running 3.2gr TG with 147 plated at steel challenge. What TG charges have people found appropriate for 115s and 135s? OAL with the SnS 147s I set at 1.14 to cycle in a variety of magazines and chambers (plunk test passed). Crimp is with a FCD set at case wall x 2 + bullet OD. Mixed yellow brass. I'm not looking to compare powders at this point. I'm more interested in testing out the different weights from different manufacturers. Tried Clays; didn't perform as well as TG for me with 9. I presume TG and WSF are also good in another high pressure round such as .40?

After finding more sights to compare, theories behind them, I think the TTI would be the right direction to go right now. Just like optics and other parts, one winds up with a pile to sell in the classifieds hehe.

I've never been to Meeker; IIRC, it's not far. I've liked how TG performs in 9. Haven't tried the WSF yet.

G34, as stated in another recent thread, used for steel, 3gun, plinking, etc. Transitioned to coated from plated. I have been using 147gr SnS in it and another company's 9mm semi. Very pleased with the push instead of snap recoil. Using Titegroup, and sometimes PowerPistol to emulate standard pressure carry rounds. Recently shot some of a friend's Berry's 115 plated with a light load of 700x. Since it's a G34, recoil was minimal anyway. Even with the hotter loads, the 34 handles recoil with aplomb. Therefore, I'm more focused on accuracy and POA/POI than felt recoil (to a limit) with the G34. I only have 147s on hand; I intend to order some sample packs to compare. The friend's 115s appeared accurate. The SnS147s with 4.2 PP were just silly accurate. I've got some WSF on standby to try, since so many here swear it's the stuff in a 9mm. I am interested to learn what people running a G34 or longslide 17 have discovered concerning bullet profile, weight and accuracy. The 135s are intriguing, but I have not tried any. I intend to stick with coated for target and matches, whether it's SnS, Bayou, or Blue. BTW, the SnS feels far more slick than Blue bullets, but that means diddly comparing it between feeling and how it goes through a bore. I did do a long-ish search, but found a rather broad spectrum of opinions dating back a while, so I wanted to learn about current experiences. Thanks.

I've been leaning toward the Dawson in your last statement. Have any of you noticed an actual difference between serrated and flat rear sights?

Thanks. I wanted to show that I researched the topic before posting, and my intended purpose is important to the recommended use. The Warren has performed well, but I'd like to see more light transmission from the front sight, and a full face rear sight with no additional fiber optic or tritium.