Question on which gas piston to use on FN SLP

skeeter · December 20, 2011, 02:20 AM

My new FN SLP comes with two gas pistons, one for 12ga rounds with shot heavier than 1 1/2 ounces and the other for anything less than that.
What should I use for Remington 00 or 000 buck in magnum and non magnum? Remington did not answer my e-mail on the weight of these rounds.

Most of my magnum slugs are only 1 oz or 1 1/4 oz and since they kick a lot I can not see how it would be OK to use the lightegas piston. Do they even make a 12ga slug over 1 1/2 oz?

TheKlawMan · December 20, 2011, 03:20 AM

I don't know if you should be confusing "shot" with "slugs". I doubt that you need the heavy piston for 2-3/4" shells and suspect it is only needed for 3", but wair for someone that knows to tell you what to do.

Orphanedcowboy · December 20, 2011, 03:39 PM

Good rule of thumb, go heavy first, if it cycles you are good, if not go light. I have found with my new SLP 18", what works for one brand doesn't necessarily work for another.

The piston is controlling bolt speed, I have been using a SRM sealed SX-2 field piston in mine with no ill effects, so I will be installing the entire system and having Jeff make me a 2 round plug so I can take it duck hunting once for giggles. I bought the 28" barrel for it.as well, so I can shoot sporting clays and hunt with it during conservation season.

December 20, 2011, 02:20 AM	#1
skeeter Senior Member Join Date: October 29, 1999 Posts: 883	Question on which gas piston to use on FN SLP My new FN SLP comes with two gas pistons, one for 12ga rounds with shot heavier than 1 1/2 ounces and the other for anything less than that. What should I use for Remington 00 or 000 buck in magnum and non magnum? Remington did not answer my e-mail on the weight of these rounds. Most of my magnum slugs are only 1 oz or 1 1/4 oz and since they kick a lot I can not see how it would be OK to use the lightegas piston. Do they even make a 12ga slug over 1 1/2 oz?

December 20, 2011, 03:20 AM	#2
TheKlawMan Junior member Join Date: June 23, 2009 Location: Orange County, CA Posts: 2,149	I don't know if you should be confusing "shot" with "slugs". I doubt that you need the heavy piston for 2-3/4" shells and suspect it is only needed for 3", but wair for someone that knows to tell you what to do. Last edited by TheKlawMan; December 20, 2011 at 03:31 AM.

December 20, 2011, 03:39 PM	#3
Orphanedcowboy Senior Member Join Date: April 16, 2009 Location: Fort Worth, Texas Posts: 194	Good rule of thumb, go heavy first, if it cycles you are good, if not go light. I have found with my new SLP 18", what works for one brand doesn't necessarily work for another. The piston is controlling bolt speed, I have been using a SRM sealed SX-2 field piston in mine with no ill effects, so I will be installing the entire system and having Jeff make me a 2 round plug so I can take it duck hunting once for giggles. I bought the 28" barrel for it.as well, so I can shoot sporting clays and hunt with it during conservation season. Last edited by Orphanedcowboy; December 20, 2011 at 03:46 PM.