ActionJackson

Alliant Promo. 2.8 under a 147 coated bullet will make minor all day. No dirtier than TG and $100 / 8 lbs.

I can't speak to BBI, but in pretty extensive Ransom Rest testing the SNS 147 (groove less) made slightly tighter groups than the Bayou 147 (with groove) using a G34.

Promo is available most places that sell Alliant powders. Powder Valley lists it for $103/8lbs. You can use Red Dot load data; the older Alliant and third-party manuals include a lot of data for most handgun cartridges. It's like Clays, but not as spikey and has a lot more top end. 2.8 under a 147 coated LFP will make +900 fps out of a G34 all day. I use it for a variety of cartridges, including for low-recoil .308 and .44 Magnum. 7.5 under a .44 240 SWC gets me nearly 1300 fps out of my Marlin 1894, and it's a hoot. I don't find it any dirtier than Titegroup.

Alliant Promo. $100/8lbs and I run 147 coated over 2.8 out of a G34 (OAL depends on the particular bullet, but I load long). Makes 900 fps.

Have you verified, such as by using a metal pick, that the rifling is not being hidden by lead deposits? I have seen that happen before. Ballistol and a Boresnake may not disturb any lead deposits enough for you to notice.

I'm not aware that KKM publishes the twist rate of its Glock barrels. I emailed KKM a couple of years ago asking about the rate, but didn't get a straight answer. I've seen speculation that they are anywhere from 1:16 to 1:32. Based on my testing, I would guess that it is greater (slower) than 1:16.

After conducting significant ransom rest testing with my G34, I determined that my KKM barrel would not group well with anything over 125/125 grains. I even tried pushing 147's really hard (+1000 fps) with the KKM to no avail. The stock Glock barrel shot all bullet weights well, with 147's being the most accurate in my testing. YYMV.

The SNS 125 coated fails the plunk-and-spin test in my G34 stock barrel unless seated down to at least 1.12. You may want to retest a dummy cartridge and make sure it spins freely. That being said, I got better accuracy using 147's with the stock barrel.

I don't have any experience with Dillon equipment; however, the Hornady Custom and RCBS seating dies include both a cupped and a flat stem. You should be able to look up into your Dillon die and see the cup; the die can also likely be disassembled so you can directly inspect the seating stem.

I would check to make sure that you are using a flat-tipped seating stem; otherwise, the bullets will want to tilt while being seated.

IMHO if your bullet has a flat point, then you need to use a flat-tipped seating stem. If you don't, two things will happen: 1) you will get inconsistent OALs; 2) the bullet will tip, causing it to shave. The Hornady Custom Grade 9mm seating die should include a round stem and a flat stem; mine did, and it works like a champ if, and only if, you use the right stem. Edited to clarify: I do not use the 3-die set; I did but got tired of mashing/gouging my coated/plated bullets during the seating operation. I use the individually sold Custom Grade Seater Die and the individually sold Custom Grade Taper Crimp Die.

I loaded to 1.135 for my G34. Longer and it would fail the plunk-and-spin test.

See The Plunk Test - Setting your OAL

I've found that bullets that have a sharp shoulder (the point between the ogive and the bearing surface), such as TCN-type bullets, are very sensitive accuracy-wise to overall length. Make sure to re-run the plunk-and-spin test for your 125 TCN.

My load for the Bayou 124 TCG in a stock G34 barrel is 1.086 with 3.5 grains of Promo / Red Dot. Comfortably makes minor. 3.4 makes minor, but is cutting it close.

Federal American Eagle 147 grain flat point. The bee's knees. Available at ATG.

If you're cheap like me, then go for an 8 lb jug of Promo. Same as Red Dot by weight. And available for around $100 per jug.

AlphaShot - I would appreciate it if you could tell me which pistols you shoot that do not have a warranty exception for reloads; that would certainly help inform my next purchase. Thanks

For me, stock barrel shoots 147s the best. Bayou at 1.160 or SNS at 1.155. About the same accuracy over 3.0 grains of Promo / Red Dot, but the Bayou seems to have more fliers. These loads will regularly produce a 1.4'' ten-shot group at 50 feet, Ransom rested. They very comfortably make minor at ~915 fps. My KKM barrel just does not like bullets heavier than 125 grains. I've tried to develop loads with heavy bullets (147 SNS, Bayou, Missouri, Berry, 135 Bayou, etc.), but never got better than a 2'' group at 50 feet (which would be 3'' at 75 feet, extrapolated) with heavier bullets and fast powders. I know that isn't the apparent usual experience with KKM barrels, but that's my experience after significant Ransom rest testing. The Bayou 124 TCN (truncated cone, groove-less) however will shoot 1.4'' groups at 50 feet, and sometimes better, down to nearly an inch. My load for the Bayou TCN is 1.086 with 3.5 grains of Promo / Red Dot. Comfortably makes minor.

I've done a lot of testing with a G34 in a Ransom Rest. I bought a Ransom and set about finding the most accurate polymer coated loads using the cheapest available powder, Alliant Promo (same as Red Dot by weight). I've also experimented with several other fast powders (TiteGroup, Green Dot, Clay Dot, e3, WST), but didn't find them to be more accurate than Promo with polymer coated bullets. Here are my top three recommendations for loads with Promo. I know you asked for TiteGroup, but I thought you might find this useful since you were looking for G34 data. They all make minor. All groups are ten-shot strings and were tested from a Ransom Rest at 50 feet. SNS 147 1.155 3 grains .378 1.4'' TBB 147 1.13 2.8 grains .379 1.4'' Bayou 147 1.16 3 grains .378 1.5''

I've had good luck with Alliant Promo / Red Dot in a G34. All groups are ten-shot strings and were tested from a Ransom Rest at 50 feet. SNS 147 1.155 3 grains 1.4'' TBB 147 1.13 2.8 grains 1.4'' Bayou 147 1.16 3 grains 1.5''