45 AR in a 45 ACP?

F=ma · February 3, 2002, 02:12 PM

I picked up some 200g RNFP a while back, thinking it might make a nice light target load. This morning, while setting up, I noticed the damn things have a crimp groove....I'm guessing they are for a 45 AutoRim. Assuming I can get a good taper crimp (keep the case mouth out of the groove) for my ACP, do you think I should give it a shot?

**Mike Irwin** · February 3, 2002, 04:37 PM

They will work just fine.

Bill Adair · February 3, 2002, 04:59 PM

The cannelure is there for revolver roll crimping, but like Mike says, they should work just fine.

Bill

Johnny Guest · February 3, 2002, 06:37 PM

- - -So hey could be loaded into .45 Colt and .45 S&W (Scofield) cases with poofter loads for those type matches. Sort of a gallery load, but kinda fun.

If you check, you'll probably find they are case pretty soft--or even swaged.

Should shoot well in a .45 auto with about 6.0 Unique, but the combo of U + lubed lead might be a little smoky.

Best,
Johnny

F=ma · February 4, 2002, 03:14 PM

Thanks guys...Will give 'em a try.

zeke · February 5, 2002, 07:43 AM

F=ma-Am using the 200 gn lrnfp for 45 acp loads that work in semi's, Ruger's SA 45 acp cylinders and moon clips in 625. They work very well and produce minimal leading in smooth barrels. Also use these bullets for 45 AR, 45 LC and Webley revolvers.

Couple things you may want to check for or be aware of.

1-Check the bullet dia in front of the cannelure, mine are approximately .445. if the bullet is full dia in front of the crimp groove, be careful how far you seat them.

2-There isn't a lot of full diam section of bullet for interference fit with brass. Rounds using Thinner or worn out brass may have significant set back, when used in semi-autos.

3-There is significantly more available case volume when using these bullets. You may need to adjust your charge weights accordingly.

F=ma · February 5, 2002, 03:57 PM

The bullet is full diameter ahead of the cannelure, though it is right at the point of curvature for the RN....I'll try seating right at the forward edge of the groove.

Your points on seating depth and case volume will be heeded; I hadn't considered that until you mentioned it.

Until I figure a way to send a cold frosty one via email, all I can do is say thanks again!

zeke · February 6, 2002, 08:14 AM

F=ma-you're welcome. Can i ask if these bullets are swaged or cast and who the manufacturer is?

ps-because your bullets are full dia in front of crimp groove, you will be balancing how much full diam bullet in front of brass your particular pistol will function with, versus how short of a round your pistol will function with.

Would suggest experimenting with bullets in empty cases (no powder or primer) before loading a bunch. If you need to load them to shorter OAL because of fit in chamber, would suggest loading 7 emptys and see if pistol will feed the top one with fully loaded mag (fully loaded with no powder or primer)

F=ma · February 6, 2002, 08:36 PM

"Hard Cast Match Grade Bullets Using Only the Finest Virgin Alloy" says N.S.K. Sales Co. out of Boring, MD. I'm thinking that I'll try to seat them a couple of thousandths (at most) ahead of the cannelure (i.e. couple of thousandths "short"), just enough to lend some support to the mouth. I'd rather be too short than too long (still trying to convince the wife

), but I'll break out the calipers & see if going long (aft of the cannelure) is possible.

I am planning on a loading a couple of dummy rounds...I have a SA that'll gobble up anything; more than likely they'll give my shorty Colt indigestion. Being the cheap, paranoid type I'll probably load a couple dozen for trial.

Thanks again for keeping me on the straight & narrow!

http://www.nsksales.com/index1.html

February 3, 2002, 02:12 PM	#1
F=ma Senior Member Join Date: October 22, 2000 Location: Shenandoah Valley Posts: 151	45 AR in a 45 ACP? I picked up some 200g RNFP a while back, thinking it might make a nice light target load. This morning, while setting up, I noticed the damn things have a crimp groove....I'm guessing they are for a 45 AutoRim. Assuming I can get a good taper crimp (keep the case mouth out of the groove) for my ACP, do you think I should give it a shot?

February 3, 2002, 04:37 PM	#2
Mike Irwin Staff Join Date: April 14, 2000 Location: Northern Virginia Posts: 41,642	They will work just fine. __________________ "The gift which I am sending you is called a dog, and is in fact the most precious and valuable possession of mankind" -Theodorus Gaza Baby Jesus cries when the fat redneck doesn't have military-grade firepower.

February 3, 2002, 06:37 PM	#4
Johnny Guest Moderator in Memoriam Join Date: August 28, 1999 Location: North Texas Posts: 4,123	I've seen 'em sold for Cowboy Action Shooting- - - - - -So hey could be loaded into .45 Colt and .45 S&W (Scofield) cases with poofter loads for those type matches. Sort of a gallery load, but kinda fun. If you check, you'll probably find they are case pretty soft--or even swaged. Should shoot well in a .45 auto with about 6.0 Unique, but the combo of U + lubed lead might be a little smoky. Best, Johnny

February 5, 2002, 03:57 PM	#7
F=ma Senior Member Join Date: October 22, 2000 Location: Shenandoah Valley Posts: 151	Thanks Zeke... The bullet is full diameter ahead of the cannelure, though it is right at the point of curvature for the RN....I'll try seating right at the forward edge of the groove. Your points on seating depth and case volume will be heeded; I hadn't considered that until you mentioned it. Until I figure a way to send a cold frosty one via email, all I can do is say thanks again!

February 3, 2002, 04:59 PM	#3
Bill Adair Senior Member Join Date: April 19, 2000 Location: Seattle/Tacoma, WA USA Posts: 345	The cannelure is there for revolver roll crimping, but like Mike says, they should work just fine. Bill

February 4, 2002, 03:14 PM	#5
F=ma Senior Member Join Date: October 22, 2000 Location: Shenandoah Valley Posts: 151	Thanks guys...Will give 'em a try.

February 5, 2002, 07:43 AM	#6
zeke Senior Member Join Date: November 17, 1999 Location: NW Wi Posts: 1,759	F=ma-Am using the 200 gn lrnfp for 45 acp loads that work in semi's, Ruger's SA 45 acp cylinders and moon clips in 625. They work very well and produce minimal leading in smooth barrels. Also use these bullets for 45 AR, 45 LC and Webley revolvers. Couple things you may want to check for or be aware of. 1-Check the bullet dia in front of the cannelure, mine are approximately .445. if the bullet is full dia in front of the crimp groove, be careful how far you seat them. 2-There isn't a lot of full diam section of bullet for interference fit with brass. Rounds using Thinner or worn out brass may have significant set back, when used in semi-autos. 3-There is significantly more available case volume when using these bullets. You may need to adjust your charge weights accordingly.

February 6, 2002, 08:14 AM	#8
zeke Senior Member Join Date: November 17, 1999 Location: NW Wi Posts: 1,759	F=ma-you're welcome. Can i ask if these bullets are swaged or cast and who the manufacturer is? ps-because your bullets are full dia in front of crimp groove, you will be balancing how much full diam bullet in front of brass your particular pistol will function with, versus how short of a round your pistol will function with. Would suggest experimenting with bullets in empty cases (no powder or primer) before loading a bunch. If you need to load them to shorter OAL because of fit in chamber, would suggest loading 7 emptys and see if pistol will feed the top one with fully loaded mag (fully loaded with no powder or primer)

February 6, 2002, 08:36 PM	#9
F=ma Senior Member Join Date: October 22, 2000 Location: Shenandoah Valley Posts: 151	"Hard Cast Match Grade Bullets Using Only the Finest Virgin Alloy" says N.S.K. Sales Co. out of Boring, MD. I'm thinking that I'll try to seat them a couple of thousandths (at most) ahead of the cannelure (i.e. couple of thousandths "short"), just enough to lend some support to the mouth. I'd rather be too short than too long (still trying to convince the wife ), but I'll break out the calipers & see if going long (aft of the cannelure) is possible. I am planning on a loading a couple of dummy rounds...I have a SA that'll gobble up anything; more than likely they'll give my shorty Colt indigestion. Being the cheap, paranoid type I'll probably load a couple dozen for trial. Thanks again for keeping me on the straight & narrow! http://www.nsksales.com/index1.html