This is a discussion on Replicating Federal 147gr Fmj FP within the MP Reloading forums, part of the Smith & Wesson MP Forum category; These seem to be very accurate in my M&Ps. Just wondering if anyone worked up a load replicating these factory loads. I was thinking of ...
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|September 14th, 2015, 11:57 AM||#1|
Join Date: Mar 2014
Replicating Federal 147gr Fmj FP
These seem to be very accurate in my M&Ps. Just wondering if anyone worked up a load replicating these factory loads. I was thinking of using MGs 147gr Fmj FPs with n320. The one thing that really concerns me is that the factory OAL is I believe about 1.06+. Haven't read where anyone is reloading this bullet so short.
Let me know-
|September 14th, 2015, 04:03 PM||#2|
Join Date: Aug 2010
Location: West Michigan
The Federal American Eagle 147grain flat point has produced the best 25 yard groups (3 inches) of any brand or weight I have tried.
|September 14th, 2015, 05:39 PM||#3|
Join Date: Mar 2014
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|October 8th, 2015, 01:55 AM||#4|
Join Date: Apr 2013
You can't replicate the powder used and it is unlikely to be similar to N320. I also haven't seen a manual with 147gn bullets and N320 powder, so, unless you find a manual with such data, you will be trusting your gun and yourself to internet loads.
You can replicate the velocity with most any powder, but that does not mean you will get the same accuracy.
The best you can do is get the same bullet and work up from the start load for accuracy to near max load. Even the same "type" of bullet can be very different.
I find that JHPs are the most accurate, followed by cast L-SWCs, followed by FPs, but the difference isn't great and I haven't found a 147gn L-SWC to test. Currently, I don't even bother to load a jacketed bullet that isn't a JHP.
I can say that 231/HP38/Zip (and even faster powders I have tried--such as Clays and Competition, that have are in the same burn rate as N320) have been very disappointing in terms of accuracy in every one of my 9x19s. The best are all lucky to produce 3" groups at 25 yards, and most are worse.My accuracy target is <2" at 25 yards.
Accuracy for 9x19 has been in the N340, Power Pistol, True Blue, and Silhouette burn rate region.
This may not work, but I would think that if you pulled a bullet and weighed the powder, and compared to your loading manuals, you might get some idea of the general burn rate region of the factory powder. About 3.0gn of powder would indicate a very fast powder (such as Clays and N320) and 5.0gn would indicate a slow powder (for the cartridge).
|October 11th, 2015, 01:09 PM||#5|
Join Date: Jan 2014
I've not tried to replicate that ammo. If I were going to try I'd probably start w/ AA7 for that bullet weight. I think Vithtavouri has load data using n320 for the 147 fr XTP.
|November 10th, 2015, 07:55 AM||#6|
Join Date: May 2010
Going to give this my best shot, pardon the pun.
Chronographed 20 through 5" Pro 9.
952 FPS average, SD of 13.59.
Very pleasant load.
Pulled one down. Propellant is 4.5 grains of a non canister powder resembling Bullseye.
Last edited by taroman; November 10th, 2015 at 01:06 PM.
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