XTP 115 gr and TiteGroup

[rocice]

The only load info I have is from the current Lyman reloading book, 4 to 4.5 gr and 1.090 OAL. When I set the bullet seating die to 1.090, out of 5 dummy rounds I'm seeing 1.86, 1.88, 1.91 and 2@1.90. Is this due to the bullet design, press design, and will this variance make a big difference in pressure? I'm using LnL ap and Redding dies.

[D. Manley]

The only load info I have is from the current Lyman reloading book, 4 to 4.5 gr and 1.090 OAL. When I set the bullet seating die to 1.090, out of 5 dummy rounds I'm seeing 1.86, 1.88, 1.91 and 2@1.90. Is this due to the bullet design, press design, and will this variance make a big difference in pressure? I'm using LnL ap and Redding dies.

Hopefully, you have a decimal out of place...? FWIW, I find 1.10 works very well with the 9MM 115 grain XTP as well as it's lower priced clone from Montana Gold. Using TG, 4.3 grains shoots well and is very accurate in my guns.

[rocice]

LOL, yea, i'm one decimal out of place, should be 1.090. Thanks for the info, as you can tell, newb. Am I seeing a variance with the bullet seating depth because of the bullet design?

[faith107]

MOST OF MY PISTOL LOADS SEEM TO VARY A FEW THOUSANDTHS
IN OAL BUT IMO NOT A MAJOR ISSUE. WHEN LOADING FOR MY RIFLE I LIKE TO HAVE ALL NUMBERS MATCHING AS CLOSE AS POSSIBLE, BUT THATS A DIFFERENT SUBJECT.

[BigSlick]

4.3 is the magic number for what I use too.

Lot of MG 124's and 115's

XTP's are incredibly nice and accurate

[D. Manley]

LOL, yea, i'm one decimal out of place, should be 1.090. Thanks for the info, as you can tell, newb. Am I seeing a variance with the bullet seating depth because of the bullet design?

What you are seeing may be a very slight (and, inconsequential) variation in the seated OAL but is just as likely a variation in the measurements due to the caliper fit to the loaded cartridge end-to-end. If you measure your bullets or brass alone end-to-end you'll likely see variation there too.

[aridan]

A variance of +/- 0.005 is normal. Make sure your sizing die is loaded when setting the OAL, otherwise the REAL OAL will be greater than 1.090 that you've measured.

Whatever OAL you end up using, make sure your ammo passes the barrel test.

Lastly, if you're using Hornady dies, experiment with seating stems that came with your die set, there's a flat-tip and a concave one. See which one gives you most consistent OAL results - since you're loading FMJs I suspect it would be the flat-tip seating stem.

[jawjaboy]

Welcome to GlockPost Aridan. Pleased to have ya.

[BigSlick]

A variance of +/- 0.005 is normal. Make sure your sizing die is loaded when setting the OAL, otherwise the REAL OAL will be greater than 1.090 that you've measured.

Whatever OAL you end up using, make sure your ammo passes the barrel test.



+1

Making sure your size die is full keeps the shell plate pressure even and consistent.

It's a good idea to set final depth when you are running a full deck.

[faith107]

+1

Making sure your size die is full keeps the shell plate pressure even and consistent.

It's a good idea to set final depth when you are running a full deck.

WHAT DO U MEAN BY KEEPING THE DIE FULL? :wallbash:

[D. Manley]

WHAT DO U MEAN BY KEEPING THE DIE FULL? :wallbash:

He means to have a case in each available slot in the shellplate performing the intended operation...sizing, seating, expanding/powder drop, etc. This will equalize the pressure on the shellplate and result in more accurate measurements of OAL. If there is only a round being seated with the other slots empty the shellplate can flex a bit and then when actually in the loading sequence the seating depth will shift.

[rocice]

Thanks for all the info. After filling the shell holder, my OAL is now consistent 1.090 to 1.092. I initially had only the shell I was seating the bullet in in the shell plate.

[faith107]

SAME HERE, THANKS MR. MANLEY......