Need Help for Bayou 145gr RN Load Data

[marathonrunner]

Hey Guys, I called Bayou Bullets and spoke to David who is a really nice guy. However, he gave me a load data for his 145gr Bayou Bullet 145gr Round Nose at

Power Pistol 4.2gr to 4.7gr and OAL at 1.130

I looked at other load manuals and all of them and Hornady only has a 147gr and the OAL was 1.165.

Then another reloading book only had one 145gr lead round nose and had the OAL at 1.140.

If I use 1.130 as was recomended using 4.2gr of PP, I am wondering if that will be too much. Maybe I should back off to 1.150 or something like that. I loaded one using 1.155 and it passes the plunk test

 

[dswancutt]

I think you will be fine. Alliant lists an minimum OL of 1.10 for Sport Pistol with a Acme 145gr LRN. I ran Missouri Bullets 147gr FP at 4.5gr of Power Pistol for a long time and never had any pressure signs.
I would load 5 or 10 at 1.13/4.2grs and see how they look.

 

[trapper9260]

With 2 grs different will not matter for your data as long you start low and work up your load you will be good. Also for the OAL cycle in your gun for what you stated with out any problems go with that.

 

[marathonrunner]

I think you will be fine. Alliant lists an minimum OL of 1.10 for Sport Pistol with a Acme 145gr LRN. I ran Missouri Bullets 147gr FP at 4.5gr of Power Pistol for a long time and never had any pressure signs.
I would load 5 or 10 at 1.13/4.2grs and see how they look.

thanks for the info and I think I will also try making some as outlined in some of my loading manual to 1.140 to be on the safer side. I tried 1.160 and it still passes the plunk test

 

[Wise_A]

The OAL listed in manuals is kind've arbitrary. If it plunks, you should be fine, so long as you're not touching the rifling.

4.2gr of PP is my load for soft-shooting 147-gr 9s.

Double-check they fit the magazine.

 

[marathonrunner]

The OAL listed in manuals is kind've arbitrary. If it plunks, you should be fine, so long as you're not touching the rifling.

4.2gr of PP is my load for soft-shooting 147-gr 9s.

Double-check they fit the magazine.

I made the following for testing

5 rounds of 145gr using Power Pistol 4.2gr 1.130
5 rounds of 145gr using Power Pistol 4.3gr 1.130
5 rounds of 145gr using PP at 4.2gr 1.155
5 rounds of 145gr PP at 4.3gr 1.155
5 rounds of 145gr PP at 4.4gr at OAL 1.155

The max I hear is 4.7gr of PP but I dont' think I will go that high. My rounds at OAL 1.155 definitely passes the plunk test. I am wondering the closer my bullet is without touching the lands will that make it more accurate?

 

[fredj338]

OAL is the most misunderstood aspect of reloading, new guy or old guy. OAL is ALWAYS bullet & barrel specific.
Bayou 145 have a rather abrupt ogive & will load shorter than others. The 1.165" oal is saami max, not what fits most guns. I find 0.1140" works in most but not all guns.
Btw, the solid, no groove bullet design means more bearing surface & higher/pressure & vel. So as always, bullets are rarely plug & play. I find ypu will need less powder to get the book vel shown.

 

[Wise_A]

The max I hear is 4.7gr of PP but I dont' think I will go that high. My rounds at OAL 1.155 definitely passes the plunk test. I am wondering the closer my bullet is without touching the lands will that make it more accurate?

Probably not. You get more mileage out of getting your powder/charge/bullet combination right, and then preparing your components properly. In other words, sorting and then weighing bullets, using fresh brass and reloading it in batches, etc.

Where you have to worry about touching the lands is that it will increase pressure. Probably not enough to cause a problem, in your case, but lots of folks just equate longer loadings with lower pressures.

Even in rifles, where loading as close to the lands as possible is usually par for the course, there are bullet styles that typically either like to be loaded right into the rifling, or jumped a decent bit--as much as .02" or .05". Different lengths in between there can group unpredictably.

If you're plunking just fine with the 1.155s, I would just go with them. But if the 1.130s function smoother, those would be fine, too.